Rev. 1.1
CMOS 4-BIT SINGLE CHIP MICROCONTROLLER
S1C6F016
Technical Manual
©
SEIKO EPSON CORPORATION
2013, All rights reserved.
Notice
No part of this material may be reproduced or duplicated in any form or by any means without the written permission of Seiko
Epson. Seiko Epson reserves the right to make changes to this material without notice. Seiko Epson does not assume any liability
of any kind arising out of any inaccuracies contained in this material or due to its application or use in any product or circuit and,
further, there is no representation that this material is applicable to products requiring high level reliability, such as, medical prod-
ucts. Moreover, no license to any intellectual property rights is granted by implication or otherwise, and there is no representation
or warranty that anything made in accordance with this material will be free from any patent or copyright infringement of a third
party. When exporting the products or technology described in this material, you should comply with the applicable export control
laws and regulations and follow the procedures required by such laws and regulations. You are requested not to use, to resell, to
export and/or to otherwise dispose of the products (and any technical information furnished, if any) for the development and/or
manufacture of weapon of mass destruction or for other military purposes.
All brands or product names mentioned herein are trademarks and/or registered trademarks of their respective companies.
Evaluation board/kit and Development tool important notice
1. This evaluation board/kit or development tool is designed for use for engineering evaluation, demonstration, or development
purposes only. Do not use it for other purpose. It is not intended to meet the requirement of design for finished product.
2. This evaluation board/kit or development tool is intended for use by an electronics engineer, and it is not the product for con-
sumer. The user should use this goods properly and safely. Seiko Epson dose not assume any responsibility and liability of any
kind of damage and/or fire coursed by usage of it. User should cease to use it when any abnormal issue occurs even during
proper and safe use.
3. The part used for this evaluation board/kit or development tool is changed without any notice.
Devices
S1 C 63158 F 0A01
Packing specifications
00 : Besides tape & reel
0A : TCP BL 2 directions
0B : Tape & reel BACK
0C : TCP BR 2 directions
0D : TCP BT 2 directions
0E : TCP BD 2 directions
0F : Tape & reel FRONT
0G : TCP BT 4 directions
0H : TCP BD 4 directions
0J : TCP SL 2 directions
0K : TCP SR 2 directions
0L : Tape & reel LEFT
0M : TCP ST 2 directions
0N : TCP SD 2 directions
0P : TCP ST 4 directions
0Q : TCP SD 4 directions
0R : Tape & reel RIGHT
99 : Specs not fixed
Specification
Package
D: die form; F: QFP, B: BGA
Model number
Model name
C: microcomputer, digital products
Product classification
S1: semiconductor
Development tools
S5U1 C 63000 A1 1
Packing specifications
00: standard packing
Version
1: Version 1
Tool type
Hx : ICE
Ex : EVA board
Px : Peripheral board
Wx : Flash ROM writer for the microcomputer
Xx : ROM writer peripheral board
Cx : C compiler package
Ax : Assembler package
Dx : Utility tool by the model
Qx : Soft simulator
Yx : Writer software
Corresponding model number
63000: common to S1C63 Family
Tool classification
C: microcomputer use
Product classification
S5U1: development tool for semiconductor products
00
00
Configuration of product number
CONFIGURATION OF PRODUCT NUMBER
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation i
(Rev. 1.1)
Configuration of product number
CONTENTS
ii Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
- Contents -
1 Outline ...........................................................................................................................1-1
1.1 Features ...........................................................................................................................1-1
1.2 Block Diagram ..................................................................................................................1-2
1.3 Mask Option .....................................................................................................................1-3
2 Pins and Package .........................................................................................................2-1
2.1 Pin Layout Diagram ..........................................................................................................2-1
2.1.1 QFP15-100pin ...................................................................................................2-1
2.1.2 Chip ...................................................................................................................2-2
2.2 Pin Description .................................................................................................................2-4
2.3 Package ...........................................................................................................................2-6
2.3.1 Plastic Package..................................................................................................2-6
2.3.2 Ceramic Package for Test Samples ...................................................................2-7
3 CPU and Memory ..........................................................................................................3-1
3.1 CPU ..................................................................................................................................3-1
3.2 Code Memory Area ..........................................................................................................3-1
3.2.1 Code ROM .........................................................................................................3-1
3.2.2 Flash EEPROM Specifications ..........................................................................3-1
3.3 Data Memory Area ...........................................................................................................3-2
3.3.1 RAM ...................................................................................................................3-2
3.3.2 Data ROM ..........................................................................................................3-3
3.3.3 Display Memory .................................................................................................3-3
3.3.4 I/O Memory ........................................................................................................3-3
4 Initial Reset ...................................................................................................................4-1
4.1 Initial Reset Circuit ...........................................................................................................4-1
4.2 Reset Terminal (RESET) ..................................................................................................4-1
4.3 Simultaneous High Input to P0x Ports (P00–P03) ...........................................................4-2
4.4 Internal Register at Initial Resetting .................................................................................4-2
4.5 Terminal Settings at Initial Resetting ................................................................................4-3
5 Power Supply ................................................................................................................5-1
5.1 Operating Voltage .............................................................................................................5-1
5.2 Internal Power Supply Circuit ...........................................................................................5-1
5.3 Controlling LCD Power Supply .........................................................................................5-2
5.4 Heavy Load Protection Function ......................................................................................5-2
5.5 I/O Memory for Power Supply Circuit ...............................................................................5-3
5.6 Precautions ......................................................................................................................5-4
6 Interrupt Controller .......................................................................................................6-1
6.1 Configuration of Interrupt Controller .................................................................................6-1
6.2 Interrupt Factors ...............................................................................................................6-3
6.3 Interrupt Mask ..................................................................................................................6-3
6.4 Interrupt Vector .................................................................................................................6-4
6.5 I/O Memory of Interrupt Controller ...................................................................................6-5
6.6 Precautions ......................................................................................................................6-8
7 Oscillation Circuit and Clock Control .........................................................................7-1
7.1 Oscillation Circuit .............................................................................................................7-1
7.1.1 Configuration of Oscillation Circuit .....................................................................7-1
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S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation iii
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7.1.2 Mask Option .......................................................................................................7-1
7.1.3 OSC1 Oscillation Circuit ....................................................................................7-1
7.1.4 OSC3 Oscillation Circuit ....................................................................................7-2
7.2 Switching the CPU Clock .................................................................................................7-3
7.3 HALT and SLEEP .............................................................................................................7-3
7.4 Control of Peripheral Circuit Clocks .................................................................................7-4
7.5 Clock Output (FOUT) .......................................................................................................7-4
7.6 I/O Memory for Oscillation Circuit/Clock Output Control ..................................................7-5
7.7 Precautions ......................................................................................................................7-6
8 Watchdog Timer ............................................................................................................8-1
8.1 Configuration of Watchdog Timer .....................................................................................8-1
8.2 Interrupt Function .............................................................................................................8-1
8.3 I/O Memory of Watchdog Timer .......................................................................................8-1
8.4 Precautions ......................................................................................................................8-2
9 Clock Timer ..................................................................................................................9-1
9.1 Configuration of Clock Timer ............................................................................................9-1
9.2 Controlling Operating Clock .............................................................................................9-1
9.3 Data Read and Hold Function ..........................................................................................9-1
9.4 Interrupt Function .............................................................................................................9-2
9.5 I/O Memory of Clock Timer ..............................................................................................9-2
9.6 Precautions ......................................................................................................................9-4
10 Stopwatch Timer ........................................................................................................10-1
10.1 Configuration of Stopwatch Timer .................................................................................10-1
10.2 Controlling Operating Clock ..........................................................................................10-1
10.3 Counter and Prescaler ..................................................................................................10-1
10.4 Capture Buffer and Hold Function .................................................................................10-2
10.5 Stopwatch Timer RUN/STOP and Reset .......................................................................10-3
10.6 Direct Input Function and Key Mask .............................................................................10-3
10.7 Interrupt Function ..........................................................................................................10-6
10.8 I/O Memory of Stopwatch Timer ....................................................................................10-7
10.9 Precautions ..................................................................................................................10-10
11 Programmable Timer .................................................................................................11-1
11.1 Configuration of Programmable Timer ..........................................................................11-1
11.2 Controlling Operating Clock ..........................................................................................11-2
11.3 Basic Counter Operation ...............................................................................................11-3
11.4 Event Counter Mode (Timers 0 and 2) ..........................................................................11-4
11.5 PWM mode (Timers 0–3) ..............................................................................................11-5
11.6 16-bit timer mode (Timer 0 + 1, Timer 2 + 3) ................................................................11-6
11.7 Interrupt Function ..........................................................................................................11-6
11.8 TOUT Output Control ....................................................................................................11-7
11.9 Clock Output to Serial Interface and R/F Converter ......................................................11-7
11.10 I/O Memory of Programmable Timer ...........................................................................11-8
11.11 Precautions ................................................................................................................11-13
12 I/O Ports .....................................................................................................................12-1
12.1 Configuration of I/O Ports ..............................................................................................12-1
12.2 Mask Option ..................................................................................................................12-2
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12.3 I/O Control Registers and Input/Output Mode ...............................................................12-3
12.4 Input Interface Level ......................................................................................................12-3
12.5 Pull-down During Input Mode ........................................................................................12-3
12.6 Key Input Interrupt Function ..........................................................................................12-3
12.7 I/O memory of I/O ports ................................................................................................12-5
12.8 Precautions ..................................................................................................................12-10
13 Serial Interface ...........................................................................................................13-1
13.1 Configuration of Serial Interface ....................................................................................13-1
13.2 Serial Interface Terminals ..............................................................................................13-1
13.3 Mask Option ..................................................................................................................13-2
13.4 Operating Mode of Serial Interface ...............................................................................13-2
13.5 Setting Synchronous Clock ...........................................................................................13-4
13.5.1 Selecting Source Clock ...................................................................................13-4
13.5.2 Selecting Synchronous Clock Format .............................................................13-4
13.6 Data Input/Output and Interrupt Function ......................................................................13-5
13.6.1 Serial Data Output Procedure and Interrupt ...................................................13-5
13.6.2 Serial Data Input Procedure and Interrupt ......................................................13-5
13.6.3 Serial Data Input/Output Permutation .............................................................13-6
13.6.4 SRDY Signal ...................................................................................................13-6
13.6.5 Timing Chart ...................................................................................................13-6
13.7 Data Transfer in SPI Mode ............................................................................................13-8
13.8 I/O Memory of Serial Interface ......................................................................................13-9
13.9 Precautions ..................................................................................................................13-12
14 LCD Driver ..................................................................................................................14-1
14.1 Configuration of LCD Driver ..........................................................................................14-1
14.2 Mask Option ..................................................................................................................14-1
14.2.1 SEG/GPIO/RFC Terminal Configuration ........................................................14-1
14.2.2 Power Source for LCD Driving ........................................................................14-2
14.2.3 Segment Option ..............................................................................................14-2
14.3 LCD Display Control ......................................................................................................14-8
14.3.1 Selecting Display Mode ..................................................................................14-8
14.3.2 Switching Drive Duty .......................................................................................14-8
14.3.3 Switching Frame Frequency ...........................................................................14-8
14.3.4 Drive Waveform ...............................................................................................14-8
14.3.5 Static Drive.....................................................................................................14-15
14.3.6 LCD Contrast Adjustment ..............................................................................14-15
14.4 Display Memory ...........................................................................................................14-16
14.5 I/O Memory of LCD Driver ............................................................................................14-16
14.6 Precautions ..................................................................................................................14-18
15 Sound Generator .......................................................................................................15-1
15.1 Configuration of Sound Generator ................................................................................15-1
15.2 Controlling Operating Clock ..........................................................................................15-1
15.3 Buzzer Output Control ...................................................................................................15-1
15.4 Buzzer Frequency and Sound Level Settings ...............................................................15-2
15.5 Digital Envelope ...........................................................................................................15-3
15.6 One-shot output ...........................................................................................................15-3
15.7 I/O Memory of Sound Generator ...................................................................................15-4
15.8 Precautions ...................................................................................................................15-6
CONTENTS
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation v
(Rev. 1.1)
16 Integer Multiplier........................................................................................................16-1
16.1 Configuration of Integer Multiplier .................................................................................16-1
16.2 Controlling Clock Manager ............................................................................................16-1
16.3 Multiplication Mode .......................................................................................................16-1
16.4 Division Mode ................................................................................................................16-2
16.5 Execution Cycle.............................................................................................................16-2
16.6 I/O Memory of Integer Multiplier ....................................................................................16-3
16.7 Precautions ...................................................................................................................16-5
17 R/F Converter .............................................................................................................17-1
17.1 Configuration of R/F Converter .....................................................................................17-1
17.2 Controlling Operating Clock ..........................................................................................17-1
17.3 Connection Terminals and CR Oscillation Circuit ..........................................................17-2
17.4 Operation of R/F Conversion .........................................................................................17-4
17.5 Interrupt Function ..........................................................................................................17-6
17.6 Continuous Oscillation Function ....................................................................................17-8
17.7 I/O Memory of R/F Converter ........................................................................................17-8
17.8 Precautions ..................................................................................................................17-11
18 SVD (Supply Voltage Detection) Circuit ...................................................................18-1
18.1 Configuration of SVD Circuit .........................................................................................18-1
18.2 SVD Operation ..............................................................................................................18-1
18.3 I/O Memory of SVD Circuit ............................................................................................18-2
18.4 Precautions ...................................................................................................................18-2
19 Electrical Characteristics ..........................................................................................19-1
19.1 Absolute Maximum Rating ............................................................................................19-1
19.2 Recommended Operating Conditions ...........................................................................19-1
19.3 DC Characteristics ........................................................................................................19-2
19.4 Analog Circuit Characteristics and Current Consumption .............................................19-2
19.4.1 LCD Driver ......................................................................................................19-2
19.4.2 SVD Circuit .....................................................................................................19-3
19.4.3 R/F Converter Circuit ......................................................................................19-3
19.4.4 Current Consumption ......................................................................................19-4
19.5 Oscillation Characteristics .............................................................................................19-4
19.6 Serial Interface AC Characteristics ...............................................................................19-5
19.7 Timing Chart ..................................................................................................................19-5
19.8 Characteristics Curves (reference value) ......................................................................19-6
20 Basic External Wiring Diagram ................................................................................20-1
Appendix A List of I/O Registers ................................................................................ AP-A-1
FF00H Oscillation Circuit ........................................................................ AP-A-1
FF01H Watchdog Timer ......................................................................... AP-A-1
FF02H–FF03H Power Supply Circuit .................................................................. AP-A-1
FF04H–FF05H SVD Circuit ................................................................................. AP-A-1
FF10H–FF1BH Clock Manager ........................................................................... AP-A-1
FF20H–FF3FH I/O Ports ..................................................................................... AP-A-2
FF40H–FF42H Clock Timer ................................................................................. AP-A-4
FF44H–FF47H Sound Generator ........................................................................ AP-A-4
FF48H–FF4DH Stopwatch Timer ......................................................................... AP-A-4
FF50H–FF52H LCD Driver .................................................................................. AP-A-5
FF58H–FF5CH Serial Interface ........................................................................... AP-A-5
CONTENTS
vi Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
FF60H–FF6BH R/F Converter .............................................................................. AP-A-5
FF70H–FF76H Integer Multiplier ......................................................................... AP-A-6
FF80H–FF9FH Programmable Timer .................................................................. AP-A-7
FFE1H–FFFFH Interrupt Controller ...................................................................... AP-A-9
Appendix B Peripheral Circuit Boards for S1C6F016............................................... AP-B-1
B.1 Names and Functions of Each Part ............................................................................. AP-B-1
B.1.1 S5U1C63000P6 ............................................................................................. AP-B-1
B.1.2 S5U1C6F016P2 ............................................................................................ AP-B-3
B.2 Connecting to the Target System ................................................................................. AP-B-5
B.3 Downloading to S5U1C63000P6 ................................................................................. AP-B-8
B.4 Usage Precautions ...................................................................................................... AP-B-8
B.4.1 Operational precautions ............................................................................... AP-B-8
B.4.2 Differences with the actual IC ........................................................................ AP-B-9
B.5 Product Specifications ................................................................................................ AP-B-12
B.5.1 Specifications of S5U1C63000P6 ................................................................ AP-B-12
B.5.2 Specifications of S5U1C6F016P2 ................................................................ AP-B-12
Appendix C Flash EEPROM Programming ............................................................... AP-C-1
C.1 Outline of Writing Tools ................................................................................................ AP-C-1
C.2 Serial Programming ..................................................................................................... AP-C-1
C.2.1 Serial Programming Environment.................................................................. AP-C-1
C.2.2 System Connection for Serial Programming ................................................. AP-C-2
C.2.3 Serial Programming Procedure ..................................................................... AP-C-3
C.2.4 Connection Diagram for Serial Programming ................................................ AP-C-7
C.3 On Board Writer Control Software ............................................................................... AP-C-9
C.3.1 Starting Up .................................................................................................... AP-C-9
C.3.2 Setup ............................................................................................................ AP-C-10
C.3.3 Command Details ......................................................................................... AP-C-12
1. LOAD PROGRAM (HSA file, LSA file) .............................................................. AP-C-12
2. LOAD DATA (CSA file) ......................................................................................AP-C-13
3. LOAD SEGMENT (SSA file) ............................................................................. AP-C-13
4. ERASE PROGRAM, DATA, SEGMENT ............................................................ AP-C-14
5. BLANK CHECK PROGRAM, DATA, SEGMENT ............................................... AP-C-14
6. PROGRAM PROGRAM, DATA, SEGMENT ...................................................... AP-C-15
7. VERIFY PROGRAM, DATA, SEGMENT ........................................................... AP-C-15
8. READ PROGRAM, DATA, SEGMENT .............................................................. AP-C-16
9. MACRO ............................................................................................................. AP-C-16
10. DUMP MEMORY ............................................................................................. AP-C-17
11. OPEN LOG FILE ............................................................................................. AP-C-18
12. SAVE PROGRAM ........................................................................................... AP-C-18
13. SAVE DATA ..................................................................................................... AP-C-18
C.3.4 List of Commands ........................................................................................ AP-C-19
C.3.5 List of Error Messages ................................................................................. AP-C-19
C.4 Flash EEPROM Programming Notes ......................................................................... AP-C-20
Appendix D Power Saving .......................................................................................... AP-D-1
D.1 Power Saving by Clock Control .................................................................................... AP-D-1
D.2 Power Saving by Power Supply Control ....................................................................... AP-D-3
Appendix E S1C6F016 Mask Data Generation Procedure ....................................... AP-E-1
E.1 Mask Data Generation Flowchart ................................................................................ AP-E-1
E.2 Function Option File Generation Procedure ................................................................ AP-E-2
E.3 Segment Option File Generation Procedure ................................................................ AP-E-2
E.4 Mask Data File Generation Procedure ........................................................................ AP-E-3
CONTENTS
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation vii
(Rev. 1.1)
Appendix F Summary of Notes .................................................................................. AP-F-1
F.1 Summary of Notes by Function .................................................................................... AP-F-1
F.2 Precautions on Mounting .............................................................................................. AP-F-5
Revision History
1 OUTLINE
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 1-1
(Rev. 1.1)
Outline1
The S1C6F016 is a 4-bit microcontroller that features low voltage operations and low current consumption. It consists
of a 4-bit core CPU S1C63000 as the core CPU, Flash EEPROM (16,384 words × 13 bits), RAM (2,048 words × 4
bits), supply voltage detection (SVD) circuit, multiply-divide circuit, serial interface, timers, and sound generator. It
also incorporates a segment LCD controller/driver that can drive a maximum 56-segment × 8-common LCD panel,
and an R/F converter that can measure temperature and humidity using sensors such as a thermistor.
The S1C6F016 is suitable for battery driven clocks and watches with temperature and humidity measurement func-
tions. The S1C6F016 allows choice from eight different models by mask-option selections and shipment form selec-
tions as shown in Table 1.1.
1 Model lineupTable 1.
Mask option type *Shipment form
1 Standard mask option Type B QFP15-100pin
2 Die form
3 Standard mask option Type E QFP15-100pin
4 Die form
5 Standard mask option Type G QFP15-100pin
6 Die form
7 Custom mask option QFP15-100pin
8 Die form
* See Section 1.3, "Mask Option."
* This product uses SuperFlash® technology licensed from Silicon Storage Technology, Inc.
Features1.1
Core .......................................................... 4-bit core CPU S1C63000
OSC1 oscillation circuit ........................... 32.768 kHz (Typ.) crystal oscillation circuit
OSC3 oscillation circuit ........................... 4.2 MHz (Max.) ceramic oscillation circuit,
1.8 MHz (Typ.) CR oscillation circuit (external R), or
500 kHz (Typ.) CR oscillation circuit (built-in R) (*1)
Instruction set ........................................... Basic instruction: 47 types (411 instructions with all)
Addressing mode: 8 types
Instruction execution time ........................ During operation at 32.768 kHz: 61 µsec 122 µsec 183 µsec
During operation at 4 MHz: 0.5 µsec 1 µsec 1.5 µsec
Flash EEPROM capacity ......................... Code ROM: 16,384 words × 13 bits
Data ROM: 4,096 words × 4 bits
RAM capacity .......................................... Data memory: 2,048 words × 4 bits
Display memory: 448 bits
I/O port ..................................................... 24 bits Pull-down resistors can be incorporated. (*1)
The pins can be switched for peripheral circuit inputs/outputs. (*2)
Serial interface ......................................... 1 port, 8-bit clock synchronous system
LCD driver ............................................... 56 segments (Max.) × 8, 7, 6, 5, 4, or 3 commons (*2)
Time base counters ................................... Clock timer
1/1000-second stopwatch timer with direct key input function
Programmable timer ................................. 16-bit timer × 2 channels
Each 16-bit timer is configurable to two 8-bit timer channels (*2)
Watchdog timer ........................................ Built-in
Sound generator ....................................... With envelope and 1-shot output functions
R/F converter ........................................... 2 channels, CR oscillation type R/F converter with 20-bit counters
Supports resistive humidity sensors.
Multiply-divide circuit ............................ 8-bit accumulator × 1 channel
Multiplication: 8 bits × 8 bits → 16-bit product
Division: 16 bits ÷ 8 bits → 8-bit quotient and 8-bit remainder
Supply voltage detection (SVD) circuit ... Programmable 16 detection voltage levels (*2)
1 OUTLINE
1-2 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
External interrupt ..................................... Key input interrupt: 8 systems
Internal interrupt ...................................... Watchdog timer interrupt (NMI): 1 system
Clock timer interrupt: 8 systems
Stopwatch timer interrupt: 4 systems
Programmable timer interrupt: 8 systems
Serial interface interrupt: 1 system
R/F converter interrupt: 3 systems
Power supply voltage ............................... 1.8 to 3.6 V (for normal operation)
2.7 to 3.6 V (for Flash programming)
Operating temperature range .................... -20 to 70°C
Current consumption (Typ.) ..................... During SLEEP (32 kHz) 0.7 µA
During HALT (32 kHz) 2 µA
During running (32 kHz) 9 µA
During running (4 MHz) 950 µA
Shipment form ......................................... QFP15-100pin or die form
*1: Can be selected with mask option. *2: Can be selected with software.
Block Diagram1.2
OSC1
OSC2
OSC3
OSC4
TEST
DMOD
DCLK
DRXD
DTXD
TEST1–3
VDD
VD1
VC1–3
CA, CB
VSS
RESET
P00 / KEY00 / RUN_STP / KRST00
P01 / KEY01 / LAP / KRST01
P02 / KEY02 / KRST02
P03 / KEY03 / KRST03
P10 / KEY10 / EVIN_A
P11 / KEY11/ TOUT_A
P12 / KEY12 / BZ
P13 / KEY13 / FOUT
P20
P21
P22 / EVIN_B
P23 / TOUT_B
P30 / SCLK
P31 / SOUT
P32 / SIN
P33 / SRDY_SS
P40
P41
P42
P43
P50 / RFOUT
P51 / SEN0
P52 / REF0
P53 / RFIN0
HUD
SEN1
REF1
RFIN1
SEG44
SEG45
SEG46
SEG47
SEG40
SEG41
SEG42
SEG43
SEG36
SEG37
SEG38
SEG39
SEG48
SEG49
SEG50
SEG51
SEG55
SEG54
SEG53
SEG52
SEG0–35
COM0–7
KEY00–03
KEY10–13
FOUT
SEG36–55
KRST00–03
RUN_STP
LAP
EVIN_A, B
TOUT_A, B
BZ
SCLK
SOUT
SIN
SRDY_SS
RFOUT
RFIN0
SEN0, REF0
RFIN1
SEN1, REF1
HUD
Mask option
Core CPU S1C63000
Code ROM (Flash)
16,384 words × 13 bits
Flash
Controller
System Reset
Control
Interrupt
Controller
OSC
RAM
2,048 words × 4 bits
Data ROM
4,096 words × 4 bits
LCD Controller
& Driver
Power
Controller
SVD
Watchdog
Timer
Clock
Management
Unit
Clock
Timer
Stopwatch
Timer
Programmable
Timer
Sound
Generator
Integer Multiplier
Test
R/F Converter
I/O Controller
& I/O Port
Serial
Interface
2.1 Block diagramFigure 1.
1 OUTLINE
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 1-3
(Rev. 1.1)
Mask Option1.3
S1C6F016 provides three standard mask option models (Type B, Type E, and Type G) and a custom mask option
model that allows selection of each optional specification. (See Table 1.1 and Tables 1.3.1–1.3.5.) In the custom
option model, several hardware specifications are prepared in each optional item, and one of them can be selected
according to the application. Use the function option generator "winfog" and segment option generator "winsog"
provided as development tools of S1C6F016 for this selection. Mask pattern of the IC is finally generated based on
the data created by winfog and winsog. (The mask pattern for the segment option will be generated using only the
segment output specification (S) in the custom mask option data created by winsog. The segment allocation data
must be programmed.)
Refer to the "S5U1C63000A Manual" for winfog and winsog.
<Outline of the mask option>
(1) OSC1 oscillation circuit
The OSC1 oscillator type is fixed at crystal oscillation. Refer to "OSC1 Oscillation Circuit" in the "Oscillation
Circuit and Clock Control" chapter for details.
(2) OSC3 oscillation circuit
The custom mask option model provides an option to select the OSC3 oscillator type from ceramic oscillation,
CR oscillation (external R) and CR oscillation (built-in R). The standard mask option Type B model is configured
with a ceramic oscillation circuit. The Type E and Type G models are configured with a CR oscillation circuit
(external R). Refer to "OSC3 Oscillation Circuit" in the "Oscillation Circuit and Clock Control" chapter for de-
tails.
(3) RESET terminal pull-down resistor
The custom mask option model provides an option to select whether an internal pull-down resistor is incorporated
into the RESET input port. The standard mask option models have a built-in pull-down resistor. Refer to "Reset
Terminal (RESET)" in the "Initial Reset" chapter for details.
(4) SEG/GPIO/RFC selector
The I/O port (P20–P23, P30–P33, P40–P43) and R/F converter input/output pins are shared with the SEG36–
SEG55 terminals. The custom mask option model allows selection of whether each of these pins are used for the
I/O port or R/F converter or used for the SEG output. The standard mask option Type B and Type G models are
configured for the I/O port or R/F converter pins. The standard mask option Type E model is configured for the
SEG output pins. Refer to "Mask Option" in the "LCD Driver" chapter for details.
(5) I/O port pull-down resistor
The custom mask option model provides an option to select whether an internal pull-down resistor that will be
enabled in input mode is incorporated into each I/O port (P00–P03, P10–P13, P20–P23, P30–P33, P40–P43,
P50–P53). The standard mask option Type B and Type E models have built-in pull-down resistors for all I/O
ports. The standard mask option Type G model has no built-in pull-down resistors for P10 and P11 and all other
I/O ports include a pull-down resistor. Refer to "Mask Option" in the "I/O Ports" chapter for details.
(6) Output specification of the I/O port
The custom mask option model provides an option to select either complementary output or P-channel open drain
output as the output cell type of each I/O port (P00–P03, P10–P13, P20–P23, P30–P33, P40–P43, P50–P53). The
standard mask option models are configured with complementary output for all I/O ports. Refer to "Mask Option"
in the "I/O Ports" chapter for details.
Do not configure the P50–P53 ports to P-channel open drain output if the R/F converter (channel 0) is used.
(7) Multiple key entry reset function (by simultaneous high input to the P0x ports)
The custom mask option model provides an option to select whether the function to reset the IC by pressing mul-
tiple keys simultaneously is implemented or not. A combination of the P0x ports (P00–P03) to be used for this
function can also be selected. The standard mask option models do not have this function. Refer to "Simultaneous
High Input to P0x Ports (P00–P03)" in the "Initial Reset" chapter for details.
1 OUTLINE
1-4 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
(8) Time authorize circuit for the multiple key entry reset function
When the multiple key entry reset option (option (7)) is selected in the custom mask option model, the time autho-
rize circuit can also be incorporated. The time authorize circuit measures the high pulse width of the simultaneous
input signals and asserts the reset signal if it is longer than the predetermined time.
This option is not available when the multiple key entry reset option is not selected. Refer to "Simultaneous High
Input to P0x Ports (P00–P03)" in the "Initial Reset" chapter for details.
(9) LCD drive power supply
The custom mask option model allows use of an external power supply as the LCD drive power source. The
standard mask option models support internal power supply only. Refer to "Mask Option" in the "LCD Driver"
chapter for details.
(10) LCD segment specification
The LCD segment specification of the custom mask option model and standard mask option Type B and Type E
models is fixed at LCD segment output (S). The LCD segment specification of the standard mask option Type
G model is fixed at DC complementary output (C). Refer to "Mask Option" in the "LCD Driver" chapter for
details.
3.1 Option listTable 1.
Optional item Standard Type B Standard Type E Standard Type G Custom
OSC1 oscillation circuit n
1. Crystal (32.768 kHz)
n
1. Crystal (32.768 kHz)
n
1. Crystal (32.768 kHz)
n 1. Crystal (32.768 kHz)
OSC3 oscillation circuit
n 3. Ceramic (4.2 MHz)
n 2. CR (external R) n 2. CR (external R)
1. CR (built-in R)
2. CR (external R)
3. Ceramic (4.2 MHz)
RESET terminal pull-
down resistor
n 1. Use n 1. Use n 1. Use 1. Use
2. Not Use
SEG/GPIO/
RFC selector
P20 n 1. I/O
n 2. SEG
n 1. I/O 1. I/O
2. SEG
P21 n 1. I/O
n 2. SEG
n 1. I/O 1. I/O
2. SEG
P22 n 1. I/O
n 2. SEG
n 1. I/O 1. I/O
2. SEG
P23 n 1. I/O
n 2. SEG
n 1. I/O 1. I/O
2. SEG
P30 n 1. I/O
n 2. SEG
n 1. I/O 1. I/O
2. SEG
P31 n 1. I/O
n 2. SEG
n 1. I/O 1. I/O
2. SEG
P32 n 1. I/O
n 2. SEG
n 1. I/O 1. I/O
2. SEG
P33 n 1. I/O
n 2. SEG
n 1. I/O 1. I/O
2. SEG
P40 n 1. I/O
n 2. SEG
n 1. I/O 1. I/O
2. SEG
P41 n 1. I/O
n 2. SEG
n 1. I/O 1. I/O
2. SEG
P42 n 1. I/O
n 2. SEG
n 1. I/O 1. I/O
2. SEG
P43 n 1. I/O
n 2. SEG
n 1. I/O 1. I/O
2. SEG
P50 n 1. I/O
n 2. SEG
n 1. I/O 1. I/O
2. SEG
P51 n 1. I/O
n 2. SEG
n 1. I/O 1. I/O
2. SEG
P52 n 1. I/O
n 2. SEG
n 1. I/O 1. I/O
2. SEG
P53 n 1. I/O
n 2. SEG
n 1. I/O 1. I/O
2. SEG
RFIN1 n 1. RFC
n 2. SEG
n 1. RFC 1. RFC
2. SEG
REF1 n 1. RFC
n 2. SEG
n 1. RFC 1. RFC
2. SEG
SEN1 n 1. RFC
n 2. SEG
n 1. RFC 1. RFC
2. SEG
HUD n 1. RFC
n 2. SEG
n 1. RFC 1. RFC
2. SEG
1 OUTLINE
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 1-5
(Rev. 1.1)
Optional item Standard Type B Standard Type E Standard Type G Custom
I/O port pull-
down resistor
P00 n 1. Use n 1. Use n 1. Use 1. Use
2. Not Use
P01 n 1. Use n 1. Use n 1. Use 1. Use
2. Not Use
P02 n 1. Use n 1. Use n 1. Use 1. Use
2. Not Use
P03 n 1. Use n 1. Use n 1. Use 1. Use
2. Not Use
P10 n 1. Use n 1. Use
n 2. Not Use
1. Use
2. Not Use
P11 n 1. Use n 1. Use
n 2. Not Use
1. Use
2. Not Use
P12 n 1. Use n 1. Use n 1. Use 1. Use
2. Not Use
P13 n 1. Use n 1. Use n 1. Use 1. Use
2. Not Use
P20 n 1. Use n 1. Use n 1. Use 1. Use
2. Not Use
P21 n 1. Use n 1. Use n 1. Use 1. Use
2. Not Use
P22 n 1. Use n 1. Use n 1. Use 1. Use
2. Not Use
P23 n 1. Use n 1. Use n 1. Use 1. Use
2. Not Use
P30 n 1. Use n 1. Use n 1. Use 1. Use
2. Not Use
P31 n 1. Use n 1. Use n 1. Use 1. Use
2. Not Use
P32 n 1. Use n 1. Use n 1. Use 1. Use
2. Not Use
P33 n 1. Use n 1. Use n 1. Use 1. Use
2. Not Use
P40 n 1. Use n 1. Use n 1. Use 1. Use
2. Not Use
P41 n 1. Use n 1. Use n 1. Use 1. Use
2. Not Use
P42 n 1. Use n 1. Use n 1. Use 1. Use
2. Not Use
P43 n 1. Use n 1. Use n 1. Use 1. Use
2. Not Use
P50 n 1. Use n 1. Use n 1. Use 1. Use
2. Not Use
P51 n 1. Use n 1. Use n 1. Use 1. Use
2. Not Use
P52 n 1. Use n 1. Use n 1. Use 1. Use
2. Not Use
P53 n 1. Use n 1. Use n 1. Use 1. Use
2. Not Use
I/O port output
specification
P00 n 1. Complementary n 1. Complementary n 1. Complementary 1. Complementary
2. Pch Open Drain
P01 n 1. Complementary n 1. Complementary n 1. Complementary 1. Complementary
2. Pch Open Drain
P02 n 1. Complementary n 1. Complementary n 1. Complementary 1. Complementary
2. Pch Open Drain
P03 n 1. Complementary n 1. Complementary n 1. Complementary 1. Complementary
2. Pch Open Drain
P10 n 1. Complementary n 1. Complementary n 1. Complementary 1. Complementary
2. Pch Open Drain
P11 n 1. Complementary n 1. Complementary n 1. Complementary 1. Complementary
2. Pch Open Drain
P12 n 1. Complementary n 1. Complementary n 1. Complementary 1. Complementary
2. Pch Open Drain
P13 n 1. Complementary n 1. Complementary n 1. Complementary 1. Complementary
2. Pch Open Drain
P20 n 1. Complementary n 1. Complementary n 1. Complementary 1. Complementary
2. Pch Open Drain
P21 n 1. Complementary n 1. Complementary n 1. Complementary 1. Complementary
2. Pch Open Drain
P22 n 1. Complementary n 1. Complementary n 1. Complementary 1. Complementary
2. Pch Open Drain
1 OUTLINE
1-6 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
Optional item Standard Type B Standard Type E Standard Type G Custom
I/O port output
specification
P23 n 1. Complementary n 1. Complementary n 1. Complementary 1. Complementary
2. Pch Open Drain
P30 n 1. Complementary n 1. Complementary n 1. Complementary 1. Complementary
2. Pch Open Drain
P31 n 1. Complementary n 1. Complementary n 1. Complementary 1. Complementary
2. Pch Open Drain
P32 n 1. Complementary n 1. Complementary n 1. Complementary 1. Complementary
2. Pch Open Drain
P33 n 1. Complementary n 1. Complementary n 1. Complementary 1. Complementary
2. Pch Open Drain
P40 n 1. Complementary n 1. Complementary n 1. Complementary 1. Complementary
2. Pch Open Drain
P41 n 1. Complementary n 1. Complementary n 1. Complementary 1. Complementary
2. Pch Open Drain
P42 n 1. Complementary n 1. Complementary n 1. Complementary 1. Complementary
2. Pch Open Drain
P43 n 1. Complementary n 1. Complementary n 1. Complementary 1. Complementary
2. Pch Open Drain
P50 n 1. Complementary n 1. Complementary n 1. Complementary 1. Complementary
2. Pch Open Drain *
P51 n 1. Complementary n 1. Complementary n 1. Complementary 1. Complementary
2. Pch Open Drain *
P52 n 1. Complementary n 1. Complementary n 1. Complementary 1. Complementary
2. Pch Open Drain *
P53 n 1. Complementary n 1. Complementary n 1. Complementary 1. Complementary
2. Pch Open Drain *
P0x port multiple key
entry reset combination
n 1. Not Use n 1. Not Use n 1. Not Use 1. Not Use
2. Use <P00, P01>
3. Use <P00, P01, P02>
4. Use <P00, P01, P02, P03>
P0x port multiple key
entry reset time autho-
rization
n 1. Not Use n 1. Not Use n 1. Not Use 1. Not Use
2. Use
LCD drive power
supply
n 1. Internal 1/3 bias n 1. Internal 1/3 bias n 1. Internal 1/3 bias
1. Internal 1/3 bias
2. Ext. 1/3 bias,
VDD = VC2
(4.5 V panel)
3. Ext.1/3 bias,
VDD = VC3
(3.0 V panel)
4.
Ext. 1/2 bias,
VDD = VC3,
VC1 = VC2
(3.0 V panel)
Selectable n Fixed
* Do not select "Pch Open Drain" as the P50–P53 port output specification if the R/F converter (channel 0) is used.
1 OUTLINE
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 1-7
(Rev. 1.1)
3.2 Segment option (standard mask option Type B)Table 1.
Pin
name
Address (F0xxH)
Output specificationCOM0 COM1 COM2 COM3 COM4 COM5 COM6 COM7
HLDHLDHLDHLDHLDHLDHLDHLD
SEG0 n S C N
SEG1 n S C N
SEG2 n S C N
SEG3 n S C N
SEG4 n S C N
SEG5 n S C N
SEG6 n S C N
SEG7 n S C N
SEG8 n S C N
SEG9 n S C N
SEG10 n S C N
SEG11 n S C N
SEG12 n S C N
SEG13 n S C N
SEG14 n S C N
SEG15 n S C N
SEG16 n S C N
SEG17 n S C N
SEG18 n S C N
SEG19 n S C N
SEG20 n S C N
SEG21 n S C N
SEG22 n S C N
SEG23 n S C N
SEG24 n S C N
SEG25 n S C N
SEG26 n S C N
SEG27 n S C N
SEG28 n S C N
SEG29 n S C N
SEG30 n S C N
SEG31 n S C N
SEG32 n S C N
SEG33 n S C N
SEG34 n S C N
SEG35 n S C N
SEG36 n S C N
SEG37 n S C N
SEG38 n S C N
SEG39 n S C N
SEG40 n S C N
SEG41 n S C N
SEG42 n S C N
SEG43 n S C N
SEG44 n S C N
SEG45 n S C N
SEG46 n S C N
SEG47 n S C N
SEG48 n S C N
SEG49 n S C N
SEG50 n S C N
SEG51 n S C N
SEG52 n S C N
SEG53 n S C N
SEG54 n S C N
SEG55 n S C N
<address> H: RAM data high-order address (0–7) <Output specification> S: Segment output
L: RAM data low-order address (0–F) C: Complementary output
D: Data bit (0–3) N: Nch open drain output
Notes for using the segment option generator "winsog" (standard mask option Type B)
1. Any display memory address can be allocated to SEG0 to SEG35.
2. Always select "LCD segment output (S)" as the output specification of SEG0 to SEG35, as it is fixed at segment
output.
3. Configurations for nonexistent SEG pins (SEG36 to SEG55)
• Always select "LCD segment output (S)" as the output specification of SEG36 to SEG55.
• Leave the address cells for SEG36 to SEG55 blank. (Unused addresses will be allocated.)
1 OUTLINE
1-8 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
3.3 Segment option (standard mask option Type E)Table 1.
Pin
name
Address (F0xxH)
Output specificationCOM0 COM1 COM2 COM3 COM4 COM5 COM6 COM7
HLDHLDHLDHLDHLDHLDHLDHLD
SEG0 n S C N
SEG1 n S C N
SEG2 n S C N
SEG3 n S C N
SEG4 n S C N
SEG5 n S C N
SEG6 n S C N
SEG7 n S C N
SEG8 n S C N
SEG9 n S C N
SEG10 n S C N
SEG11 n S C N
SEG12 n S C N
SEG13 n S C N
SEG14 n S C N
SEG15 n S C N
SEG16 n S C N
SEG17 n S C N
SEG18 n S C N
SEG19 n S C N
SEG20 n S C N
SEG21 n S C N
SEG22 n S C N
SEG23 n S C N
SEG24 n S C N
SEG25 n S C N
SEG26 n S C N
SEG27 n S C N
SEG28 n S C N
SEG29 n S C N
SEG30 n S C N
SEG31 n S C N
SEG32 n S C N
SEG33 n S C N
SEG34 n S C N
SEG35 n S C N
SEG36 n S C N
SEG37 n S C N
SEG38 n S C N
SEG39 n S C N
SEG40 n S C N
SEG41 n S C N
SEG42 n S C N
SEG43 n S C N
SEG44 n S C N
SEG45 n S C N
SEG46 n S C N
SEG47 n S C N
SEG48 n S C N
SEG49 n S C N
SEG50 n S C N
SEG51 n S C N
SEG52 n S C N
SEG53 n S C N
SEG54 n S C N
SEG55 n S C N
<address> H: RAM data high-order address (0–7) <Output specification> S: Segment output
L: RAM data low-order address (0–F) C: Complementary output
D: Data bit (0–3) N: Nch open drain output
Notes for using the segment option generator "winsog" (standard mask option Type E)
1. Any display memory address can be allocated to SEG0 to SEG55.
2. Always select "LCD segment output (S)" as the output specification of SEG0 to SEG55, as it is fixed at segment
output.
1 OUTLINE
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 1-9
(Rev. 1.1)
3.4 Segment option (standard mask option Type G)Table 1.
Pin
name
Address (F0xxH)
Output specificationCOM0 COM1 COM2 COM3 COM4 COM5 COM6 COM7
HLDHLDHLDHLDHLDHLDHLDHLD
SEG0 S n C N
SEG1 S n C N
SEG2 S n C N
SEG3 S n C N
SEG4 S n C N
SEG5 S n C N
SEG6 S n C N
SEG7 S n C N
SEG8 S n C N
SEG9 S n C N
SEG10 S n C N
SEG11 S n C N
SEG12 S n C N
SEG13 S n C N
SEG14 S n C N
SEG15 S n C N
SEG16 S n C N
SEG17 S n C N
SEG18 S n C N
SEG19 S n C N
SEG20 S n C N
SEG21 S n C N
SEG22 S n C N
SEG23 S n C N
SEG24 S n C N
SEG25 S n C N
SEG26 S n C N
SEG27 S n C N
SEG28 S n C N
SEG29 S n C N
SEG30 S n C N
SEG31 S n C N
SEG32 S n C N
SEG33 S n C N
SEG34 S n C N
SEG35 S n C N
SEG36 n S C N
SEG37 n S C N
SEG38 n S C N
SEG39 n S C N
SEG40 n S C N
SEG41 n S C N
SEG42 n S C N
SEG43 n S C N
SEG44 n S C N
SEG45 n S C N
SEG46 n S C N
SEG47 n S C N
SEG48 n S C N
SEG49 n S C N
SEG50 n S C N
SEG51 n S C N
SEG52 n S C N
SEG53 n S C N
SEG54 n S C N
SEG55 n S C N
<address> H: RAM data high-order address (0–7) <Output specification> S: Segment output
L: RAM data low-order address (0–F) C: Complementary output
D: Data bit (0–3) N: Nch open drain output
Notes for using the segment option generator "winsog" (standard mask option Type G)
1. Any display memory address can be allocated to SEG0 to SEG35. Leave the address cells for COM1 to COM7
blank, as Type G supports DC output only.
2. Always select "Complementary output (C)" as the output specification of SEG0 to SEG35, as it is fixed at comple-
mentary output.
3. Configurations for nonexistent SEG pins (SEG36 to SEG55)
• Always select "LCD segment output (S)" as the output specification of SEG36 to SEG55.
• Leave the address cells for SEG36 to SEG55 blank. (Unused addresses will be allocated.)
1 OUTLINE
1-10 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
3.5 Segment option (custom mask option)Table 1.
Pin
name
Address (F0xxH)
Output specificationCOM0 COM1 COM2 COM3 COM4 COM5 COM6 COM7
HLDHLDHLDHLDHLDHLDHLDHLD
SEG0 n S C N
SEG1 n S C N
SEG2 n S C N
SEG3 n S C N
SEG4 n S C N
SEG5 n S C N
SEG6 n S C N
SEG7 n S C N
SEG8 n S C N
SEG9 n S C N
SEG10 n S C N
SEG11 n S C N
SEG12 n S C N
SEG13 n S C N
SEG14 n S C N
SEG15 n S C N
SEG16 n S C N
SEG17 n S C N
SEG18 n S C N
SEG19 n S C N
SEG20 n S C N
SEG21 n S C N
SEG22 n S C N
SEG23 n S C N
SEG24 n S C N
SEG25 n S C N
SEG26 n S C N
SEG27 n S C N
SEG28 n S C N
SEG29 n S C N
SEG30 n S C N
SEG31 n S C N
SEG32 n S C N
SEG33 n S C N
SEG34 n S C N
SEG35 n S C N
SEG36 n S C N
SEG37 n S C N
SEG38 n S C N
SEG39 n S C N
SEG40 n S C N
SEG41 n S C N
SEG42 n S C N
SEG43 n S C N
SEG44 n S C N
SEG45 n S C N
SEG46 n S C N
SEG47 n S C N
SEG48 n S C N
SEG49 n S C N
SEG50 n S C N
SEG51 n S C N
SEG52 n S C N
SEG53 n S C N
SEG54 n S C N
SEG55 n S C N
<address> H: RAM data high-order address (0–7) <Output specification> S: Segment output
L: RAM data low-order address (0–F) C: Complementary output
D: Data bit (0–3) N: Nch open drain output
Notes for using the segment option generator "winsog" (custom mask option)
1. Any display memory address can be allocated to SEG0 to SEG55.
2. Always select "LCD segment output (S)" as the output specification of SEG0 to SEG55.
2 PINS AND PACKAGE
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 2-1
(Rev. 1.1)
Pins and Package2
Pin Layout Diagram2.1
QFP15-100pin2.1.1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51
SEG33
SEG32
SEG31
SEG30
SEG29
SEG28
SEG27
SEG26
SEG25
SEG24
SEG23
SEG22
SEG21
SEG20
SEG19
SEG18
SEG17
SEG16
SEG15
SEG14
SEG13
SEG12
SEG11
SEG10
SEG9
P10/KEY10/EVIN_A
P11/KEY11/TOUT_A
P12/KEY12/BZ
P13/KEY13/FOUT
P00/KRST00/KEY00/RUN_STP
P01/KRST01/KEY01/LAP
P02/KRST02/KEY02
P03/KRST03/KEY03
DTXD
DRXD
DCLK
DMOD
VSS
RESET
TEST
TEST3
TEST2
VDD
VD1
OSC4
OSC3
VSS
OSC2
OSC1
N.C.
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
VC1
VC2
VC3
CA
CB
N.C.
N.C.
N.C.
COM0
COM1
COM2
COM3
COM4
COM5
COM6
COM7
SEG0
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
SEG7
SEG8
HUD
SEN1
REF1
RFIN1
VSS
RFIN0/P53
REF0/P52
SEN0/P51
RFOUT/P50
TOUT_B/P23
EVIN_B/P22
P21
P20
SRDY_SS/P33
SIN/P32
SOUT/P31
SCLK/P30
VDD
P43
P42
P41
P40
N.C.
SEG35
SEG34
Mask option
(SEG55)
(SEG54)
(SEG53)
(SEG52)
(SEG51)
(SEG50)
(SEG49)
(SEG48)
(SEG47)
(SEG46)
(SEG45)
(SEG44)
(SEG43)
(SEG42)
(SEG41)
(SEG40)
(SEG39)
(SEG38)
(SEG37)
(SEG36)
1.1.1 Pin layout diagram (QFP15-100pin)Figure 2.
2 PINS AND PACKAGE
2-2 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
Chip2.1.2
Diagram of Pad Layout
3.775 mm
Y
X
(0, 0)
4.037 mm
Die No.
1510 15 20 25
26
30
35
40
45
47
48505560657072
73
75
80
85
90
95
96
1.2.1 Pad layout diagramFigure 2.
Chip thickness: 400 µm
Pad opening (X × Y): 85 × 87 µm (No. 1 to No. 25, No. 48 to No. 72)
87 × 85 µm (No. 26 to No. 47, No. 73 to No. 96)
2 PINS AND PACKAGE
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 2-3
(Rev. 1.1)
Pad Coordinates
1.2.1 Pad coordinatesTable 2.
No. Pad name X (µm) Y (µm) No. Pad name X (µm) Y (µm)
1 SEG33 -1369.0 -1786.5 48 OSC1 1431.0 1786.5
2 SEG32 -1169.0 -1786.5 49 OSC2 1331.0 1786.5
3 SEG31 -969.0 -1786.5 50 VSS 1231.0 1786.5
4 SEG30 -869.0 -1786.5 51 OSC3 1131.0 1786.5
5 SEG29 -769.0 -1786.5 52 OSC4 1031.0 1786.5
6 SEG28 -669.0 -1786.5 53 VD1 931.0 1786.5
7 SEG27 -569.0 -1786.5 54 VDD 731.0 1786.5
8 SEG26 -469.0 -1786.5 55 TEST1 631.0 1786.5
9 SEG25 -369.0 -1786.5 56 TEST2 531.0 1786.5
10 SEG24 -269.0 -1786.5 57 TEST3 431.0 1786.5
11 SEG23 -169.0 -1786.5 58 TEST 231.0 1786.5
12 SEG22 -69.0 -1786.5 59 RESET 131.0 1786.5
13 SEG21 31.0 -1786.5 60 VSS 31.0 1786.5
14 SEG20 131.0 -1786.5 61 DMOD -69.0 1786.5
15 SEG19 231.0 -1786.5 62 DCLK -169.0 1786.5
16 SEG18 331.0 -1786.5 63 DRXD -269.0 1786.5
17 SEG17 431.0 -1786.5 64 DTXD -369.0 1786.5
18 SEG16 531.0 -1786.5 65 P03/KRST03/KEY03 -569.0 1786.5
19 SEG15 631.0 -1786.5 66 P02/KRST02/KEY02 -669.0 1786.5
20 SEG14 731.0 -1786.5 67 P01/KRST01/KEY01/LAP -769.0 1786.5
21 SEG13 831.0 -1786.5 68 P00/KRST00/KEY00/RUN_STP -869.0 1786.5
22 SEG12 931.0 -1786.5 69 P13/KEY13/FOUT -1069.0 1786.5
23 SEG11 1031.0 -1786.5 70 P12/KEY12/BZ -1169.0 1786.5
24 SEG10 1231.0 -1786.5 71 P11/KEY11/TOUT_A -1269.0 1786.5
25 SEG9 1431.0 -1786.5 72 P10/KEY10/EVIN_A -1369.0 1786.5
26 SEG8 1917.5 -1500.0 73 HUD (SEG55) -1917.5 1300.0
27 SEG7 1917.5 -1300.0 74 SEN1 (SEG54) -1917.5 1200.0
28 SEG6 1917.5 -1100.0 75 REF1 (SEG53) -1917.5 1100.0
29 SEG5 1917.5 -1000.0 76 RFIN1 (SEG52) -1917.5 1000.0
30 SEG4 1917.5 -900.0 77 VSS -1917.5 900.0
31 SEG3 1917.5 -800.0 78 P53/RFIN0 (SEG51) -1917.5 800.0
32 SEG2 1917.5 -700.0 79 P52/REF0 (SEG50) -1917.5 700.0
33 SEG1 1917.5 -600.0 80 P51/SEN0 (SEG49) -1917.5 600.0
34 SEG0 1917.5 -500.0 81 P50/RFOUT (SEG48) -1917.5 500.0
35 COM7 1917.5 -200.0 82 P23/TOUT_B (SEG47) -1917.5 300.0
36 COM6 1917.5 -100.0 83 P22/EVIN_B (SEG46) -1917.5 200.0
37 COM5 1917.5 0.0 84 P21 (SEG45) -1917.5 100.0
38 COM4 1917.5 100.0 85 P20 (SEG44) -1917.5 0.0
39 COM3 1917.5 200.0 86 P33/SRDY_SS (SEG43) -1917.5 -200.0
40 COM2 1917.5 300.0 87 P32/SIN (SEG42) -1917.5 -300.0
41 COM1 1917.5 400.0 88 P31/SOUT (SEG41) -1917.5 -400.0
42 COM0 1917.5 500.0 89 P30/SCLK (SEG40) -1917.5 -500.0
43 CB 1917.5 900.0 90 VDD -1917.5 -600.0
44 CA 1917.5 1000.0 91 P43 (SEG39) -1917.5 -700.0
45 VC3 1917.5 1100.0 92 P42 (SEG38) -1917.5 -800.0
46 VC2 1917.5 1200.0 93 P41 (SEG37) -1917.5 -900.0
47 VC1 1917.5 1300.0 94 P40 (SEG36) -1917.5 -1000.0
– – – – 95 SEG35 -1917.5 -1200.0
– – – – 96 SEG34 -1917.5 -1400.0
2 PINS AND PACKAGE
2-4 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
Pin Description2.2
2.1 Pin descriptionFigure 2.
Pin name Pin/pad No.
I/O OP SFT Function
Default Shared
function QFP Chip
VDD 58, 93 54, 90 – – – Power (+) supply pins
VSS 54, 63, 80 50, 60, 77 – – – Power (-) supply pins
VD1 57 53 – – – Internal logic voltage regulator output pin
VC1–VC3 50–48 47–45 – – – LCD system power supply pins
CA, CB 47, 46 44, 43 – – – LCD system voltage boost/reduce capacitor connecting pins
OSC1 52 48 I – – Crystal oscillation input pin
OSC2 53 49 O – – Crystal oscillation output pin
OSC3 55 51 I OP – Ceramic oscillation input pin
I OP – CR oscillation (external R) input pin
– OP – CR oscillation (built-in R) input pin (Leave the pin open.)
OSC4 56 52 O OP – Ceramic oscillation output pin
O OP – CR oscillation (external R) output pin
– OP – CR oscillation (built-in R) output pin (Leave the pin open.)
RESET 62 59 I – – Initial reset input pin
TEST 61 58 I – – Test pin (Connect to VSS during normal operation.)
TEST1 – 55 I/o – – Flash EEPROM test pin (Leave the pin open.)
TEST2 59 56 I/o – – Flash EEPROM test pin (Connect to VDD during normal
operation.)
TEST3 60 57 I/o – – Flash EEPROM test pin (Leave the pin open.)
DMOD 64 61 I – – Flash programming control pin
DCLK 65 62 I – – Clock input pin for Flash programming
DRXD 66 63 I – – Serial data input pin for Flash programming
DTXD 67 64 O – – Serial data output pin for Flash programming
COM0–COM7 42–35 42–35 O – – LCD common output pins
SEG0–SEG35 34–1, 100, 99 34–1, 96, 95 O – – LCD segment output pins
HUD HUD 76 73 O OP – R/F converter CR oscillation output pin for AC bias sensor
SEG55 O OP – LCD segment output pin
SEN1 SEN1 77 74 O OP – R/F converter Ch.1 CR oscillation output pin for DC bias
sensor
SEG54 O OP – LCD segment output pin
REF1 REF1 78 75 O OP – R/F converter Ch.1 CR oscillation output pin for reference
resistor
SEG53 O OP – LCD segment output pin
RFIN1 RFIN1 79 76 I OP – R/F converter Ch.1 CR oscillation input pin
SEG52 O OP – LCD segment output pin
P53 P53 81 78 I/o OP D I/O port pin
RFIN0 I SFT R/F converter Ch.0 CR oscillation input pin
SEG51 O OP – LCD segment output pin
P52 P52 82 79 I/o OP D I/O port pin
REF0 O SFT R/F converter Ch.0 CR oscillation output pin for reference
resistor
SEG50 O OP – LCD segment output pin
P51 P51 83 80 I/o OP D I/O port pin
SEN0 O SFT R/F converter Ch.0 CR oscillation output pin for DC bias
sensor
SEG49 O OP – LCD segment output pin
P50 P50 84 81 I/o OP D I/O port pin
RFOUT O SFT R/F converter CR oscillation clock output pin
SEG48 O OP – LCD segment output pin
P00 P00 71 68 I/o – D I/O port pin
KRST00 I OP – Key reset input pin
KEY00 I – SFT Port interrupt input pin
RUN_STP I – SFT Stopwatch direct RUN/STOP input pin
(Can be switched to LAP input.)
P01 P01 70 67 I/o – D I/O port pin
KRST01 I OP – Key reset input pin
KEY01 I – SFT Port interrupt input pin
LAP I – SFT Stopwatch direct LAP input pin
(Can be switched to RUN/STOP input.)
P02 P02 69 66 I/o – D I/O port pin
KRST02 I OP – Key reset input pin
KEY02 I – SFT Port interrupt input pin
P03 P03 68 65 I/o – D I/O port pin
KRST03 I OP – Key reset input pin
KEY03 I – SFT Port interrupt input pin
2 PINS AND PACKAGE
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 2-5
(Rev. 1.1)
Pin name Pin/pad No.
I/O OP SFT Function
Default Shared
function QFP Chip
P10 P10 75 72 I/o – D I/O port pin
KEY10 I – SFT Port interrupt input pin
EVIN_A I – SFT Event counter (programmable timer 0) input pin
P11 P11 74 71 I/o – D I/O port pin
KEY11 I – SFT Port interrupt input pin
TOUT_A O – SFT Programmable timer 0/1 output pin
P12 P12 73 70 I/o – D I/O port pin
KEY12 I – SFT Port interrupt input pin
BZ O – SFT Sound generator output pin
P13 P13 72 69 I/o – D I/O port pin
KEY13 I – SFT Port interrupt input pin
FOUT O – SFT FOUT clock output pin
P20 P20 88 85 I/o OP – I/O port pin
SEG44 O OP – LCD segment output pin
P21 P21 87 84 I/o OP – I/O port pin
SEG45 O OP – LCD segment output pin
P22 P22 86 83 I/o OP D I/O port pin
EVIN_B I SFT Event counter (programmable timer 2) input pin
SEG46 O OP – LCD segment output pin
P23 P23 85 82 I/o OP D I/O port pin
TOUT_B O SFT Programmable timer 2/3 output pin
SEG47 O OP – LCD segment output pin
P30 P30 92 89 I/o OP D I/O port pin
SCLK I/o SFT Serial I/F clock input/output pin
SEG40 O OP – LCD segment output pin
P31 P31 91 88 I/o OP D I/O port pin
SOUT O SFT Serial I/F data output pin
SEG41 O OP – LCD segment output pin
P32 P32 90 87 I/o OP D I/O port pin
SIN I SFT Serial I/F data input pin
SEG42 O OP – LCD segment output pin
P33 P33 89 86 I/o OP D I/O port pin
SRDY_SS i/O SFT Serial I/F ready output/slave-select input pin
SEG43 O OP – LCD segment output pin
P40 P40 97 94 I/o OP – I/O port pin
SEG36 O OP – LCD segment output pin
P41 P41 96 93 I/o OP – I/O port pin
SEG37 O OP – LCD segment output pin
P42 P42 95 92 I/o OP – I/O port pin
SEG38 O OP – LCD segment output pin
P43 P43 94 91 I/o OP – I/O port pin
SEG39 O OP – LCD segment output pin
I/O: Capital letters (I, O) represent the input/output direction in the initial settings.
OP: Selected by mask option ("–" means "no option provided.")
SFT: Switched by software ("–" means "no software switch provided" and "D" means default function.)
Notes: • The test terminals must be connected to the power supply or left open as shown below. Be sure
to avoid applying other conditions to the terminals during normal operation.
TEST: Connect to VSS.
TEST1: Leave open.
TEST2: Connect to VDD.
TEST3: Leave open.
• Be sure to leave the DMOD, DTXD, DRXD and DCLK terminals open during normal operation.
Particularly, make sure that the DMOD terminal is not pulled up to high from outside the IC,
although the terminal is pulled down with an internal resistor.
2 PINS AND PACKAGE
2-6 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
Package2.3
Plastic Package2.3.1
QFP15-100pin
(Unit: mm)
14±0.1
16±0.4
5175
14±0.1
16±0.4
26
50
INDEX
0.18
251
100
76
1.4±0.1
0.1
1.7max
1
0.5±0.2
0°
10°
0.125
0.5 +0.1
–0.05
+0.05
–0.025
2 PINS AND PACKAGE
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 2-7
(Rev. 1.1)
Ceramic Package for Test Samples2.3.2
QFP15-100pin
(Unit: mm)
13.97 ±0.15
12.00Typ.
17.00 ±0.30
0.50 0.20
1
25
26 50
75
51
100 76
GLASS CERAMIC
0.50Typ.
0.82 ±0.30
2.54max.
0.76 ±0.13
0.95 ±0.08
0.38 ±0.08
3 CPU AND MEMORY
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 3-1
(Rev. 1.1)
CPU and Memory3
CPU3.1
The S1C6F016 has a 4-bit core CPU S1C63000 built-in as its CPU part.
Refer to the "S1C63000 Core CPU Manual" for the S1C63000.
Code Memory Area3.2
Code ROM3.2.1
The built-in code ROM is a Flash EEPROM for loading programs, and has a capacity of 16,384 words × 13 bits. The
core CPU can linearly access the program space up to step FFFFH from step 0000H, however, the program area of
the S1C6F016 is step 0000H to step 3FFFH. The program start address after initial reset is assigned to step 0110H.
The non-maskable interrupt (NMI) vector and hardware interrupt vectors are allocated to step 0100H and steps
0101H–010FH, respectively.
0000H
3FFFH
4000H
FFFFH
0000H
0100H
0101H
0110H
0100H
0101H
0102H
0103H
0104H
0105H
0106H
0107H
0108H
0109H
010AH
010BH
010CH
010DH
010EH
010FH
Program area
NMI vector
Hardware
interrupt vectors
Program start address
Program area
Code ROM
(Flash)
Unused area
13 bits
S1C63000 core CPU
program space
Watchdog timer (NMI)
R/F converter
Programmable timer 0
Programmable timer 1
Programmable timer 2
Programmable timer 3
–
–
–
–
Serial interface
Key input interrupt (P0)
Key input interrupt (P1)
Stopwatch timer
Clock timer (128/64/32/16 Hz)
Clock timer (8/4/2/1 Hz)
S1C6F016
program area
2.1.1 Configuration of code ROMFigure 3.
Flash EEPROM Specifications3.2.2
The S1C6F016 code ROM is a built-in Flash EEPROM and it can be programmed (erase/program/verify) on the tar-
get board with the S1C6F016 mounted. Use the On Board Writer (product name: S5U1C88000W3/S5U1C88000W4)
for Flash EEPROM programming. Table 3.2.2.1 shows the Flash EEPROM specifications.
2.2.1 Flash EEPROM specificationsTable 3.
Programming count 1000 times (Min.) *1
Data bit status after erasing 1
Program voltage range VDD = 2.7 to 3.6 V (VD1 = 2.5 V)
Security function Programming/erasing protection, On Board Writer read protection *2
*1 The programming count assumes that "erasing + programming" or "programming only" is one
count and the programmed data is guaranteed to be retained for 10 years.
*2 This protection can be set by the On Board Writer only.
Refer to the Electrical Characteristics section for other Flash EEPROM characteristics and Appendix (Flash EE-
PROM Programming) for programming with the On Board Writer.
* This product uses SuperFlash® technology licensed from Silicon Storage Technology, Inc.
Notes: • Be sure to leave the DMOD, DTXD, DRXD and DCLK terminals open during normal operation.
Particularly, make sure that the DMOD terminal is not pulled up to high from outside the IC,
although the terminal is pulled down with an internal resistor.
• The OSC1 oscillation circuit must be configured to enable oscillation when programming the
Flash EEPROM using the On Board Writer.
3 CPU AND MEMORY
3-2 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
Data Memory Area3.3
The S1C6F016 data memory consists of 2,048-word RAM, 4,096-word Flash EEPROM, 448-bit display memory and
132-word peripheral I/O memory. Figure 3.3.1 shows the overall memory map of the S1C6F016.
3.1 Memory map Figure 3.
Note: Memory is not implemented in unused areas within the memory map. Further, some non-imple-
mentation areas and unused (access prohibition) areas exist in the peripheral I/O area. If the pro-
gram that accesses these areas is generated, its operation cannot be guaranteed. Refer to the I/O
memory maps in Appendix for the peripheral I/O area.
RAM3.3.1
The RAM is a data memory for storing various kinds of data, and has a capacity of 2,048 words × 4 bits. The RAM
area is assigned to addresses 0000H to 07FFH on the data memory map. Addresses 0100H to 01FFH are 4-bit/16-bit
data accessible areas and in other areas it is only possible to access 4-bit data. When programming, keep the follow-
ing points in mind.
(1) Part of the RAM area is used as a stack area for subroutine call and register evacuation, so pay attention not to
overlap the data area and stack area.
(2) The S1C63000 core CPU handles the stack using the stack pointer for 4-bit data (SP2) and the stack pointer for
16-bit data (SP1).
16-bit data are accessed in stack handling by SP1, therefore, this stack area should be allocated to the area where
4-bit/16-bit access is possible (0100H to 01FFH). The stack pointers SP1 and SP2 change cyclically within their
respective range: the range of SP1 is 0000H to 1FFFH and the range of SP2 is 0000H to 00FFH. Therefore, pay
attention to the SP1 value because it may be set to 0200H or more exceeding the 4-bit/16-bit accessible range in
the S1C6F016 or it may be set to 00FFH or less. Memory accesses except for stack operations by SP1 are 4-bit
data access.
After initial reset, all the interrupts including NMI are masked until both the stack pointers SP1 and SP2 are set
by software. Further, if either SP1 or SP2 is re-set when both are set already, the interrupts including NMI are
masked again until the other is re-set. Therefore, the settings of SP1 and SP2 must be done as a pair.
(3) Subroutine calls use 4 words (for PC evacuation) in the stack area for 16-bit data (SP1). Interrupts use 4 words
(for PC evacuation) in the stack area for 16-bit data (SP1) and 1 word (for F register evacuation) in the stack area
for 4-bit data.
3 CPU AND MEMORY
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 3-3
(Rev. 1.1)
0000H
00FFH
0100H
01FFH
0200H
07FFH
4 bits
4-bit access area
(SP2 stack area)
4-bit access area
(Data area)
4/16-bit access area
(SP1 stack area)
3.1.1 RAM configurationFigure 3.
Data ROM3.3.2
The data ROM is a Flash EEPROM for loading various static data such as a character generator, and has a capacity
of 4,096 words × 4 bits. The data ROM is assigned to addresses 8000H to 8FFFH on the data memory map, and the
data can be read using the same data memory access instructions as the RAM.
Display Memory3.3.3
The display memory is a RAM used for storing LCD display data and is allocated between F000H and F07FH in the
data memory area. Each bit can be assigned to the specific segment terminal (SEG0–SEG55) by programming the
Flash EEPROM with the segment assignment data created using the segment option generator "winsog."
The addresses that are not used for LCD display can be used as general purpose registers.
I/O Memory3.3.4
The peripheral circuits of S1C6F016 (timer, I/O, etc.) are interfaced with the CPU in the memory mapped I/O method.
Thus, all the peripheral circuits can be controlled by accessing the I/O memory on the memory map using the memory
operation instructions. The control registers for the peripheral circuits are located in the I/O memory area as shown
in the figure below. Refer to Appendix for the register list and descriptions of each peripheral circuit for details of
the registers.
FF00H Oscillation circuit
FF01H Watchdog timer
FF03H Power supply circuit
FF04H–FF05H SVD circuit
FF10H–FF1BH Clock manager
FF20H–FF3FH I/O ports and input interrupt control
FF40H–FF42H Clock timer
FF44H–FF47H Sound generator
FF48H–FF4DH Stopwatch timer
FF50H–FF52H LCD driver
FF58H–FF5CH Serial interface
FF60H–FF6BH R/F converter
FF70H–FF76H Integer multiplier
FF80H–FF9FH Programmable timer
FFE1H–FFFFH Interrupt controller
3.4.1 I/O memory mapFigure 3.
4 INITIAL RESET
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 4-1
(Rev. 1.1)
Initial Reset4
Initial Reset Circuit4.1
The S1C6F016 should be reset to initialize the internal circuits. There are two ways of doing this.
(1) External initial reset by the RESET terminal
(2) External initial reset by simultaneous high input to P00–P03 ports (mask option)
The circuits are initialized by either (1) or (2). When the power is turned on, be sure to initialize using the reset func-
tion. It is not guaranteed that the circuits are initialized by only turning the power on.
Figure 4.1.1 shows the configuration of the initial reset circuit.
RESET
P00
P01
P02
P03
OSC2
OSC1
RQ
S
Internal
initial
reset
Divider
1 kHz
1 Hz
16 Hz
OSC1
oscillation
circuit
Noise
reject
circuit
Time
authorize
circuit
Mask option
Mask option
VSS
1.1 Configuration of initial reset circuitFigure 4.
Reset Terminal (RESET)4.2
Initial reset can be executed externally by setting the reset terminal to a high level (VDD). After that the initial reset is
released by setting the reset terminal to a low level (VSS) and the CPU starts operating. The reset input signal is main-
tained by the RS latch and becomes the internal initial reset signal. The RS latch is designed to be released by a 16 Hz
signal (high) that is divided by the OSC1 clock. Therefore in normal operation, a maximum of 1,024/fOSC1 seconds
(32 msec when fOSC1 = 32.768 kHz) is needed until the internal initial reset is released after the reset terminal goes
to low level. After the internal initial reset is released, the hardware executes an initial processing that takes 21,515/
fOSC1 seconds (657 msec when fOSC1 = 32.768 kHz) before the CPU starts operating. Be sure to maintain a reset input
of 0.1 msec or more. However, when turning the power on, the reset terminal should be set at a high level as in the
timing shown in Figure 4.2.1. Note that a reset pulse shorter than 100 nsec is rejected as noise.
VDD
RESET
2.0 msec or more
1.3 V
0.5•VDD
0.9•VDD or more (high level)
Power on
2.1 Initial reset at power onFigure 4.
The reset terminal should be set to 0.9•VDD or more (high level) until the supply voltage becomes 1.3 V or more.
After that, a level of 0.5•VDD or more should be maintained more than 2.0 msec.
The reset terminal incorporates a pull-down resistor and a mask option is provided to select whether the resistor is
used or not.
4 INITIAL RESET
4-2 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
Simultaneous High Input to P0x Ports (P00–P03)4.3
Another way of executing initial reset externally is to input high level signals simultaneously to the P0x ports (P00–
P03) selected by a mask option. Since this initial reset passes through the noise reject circuit, maintain the specified
input port terminals at high level for at least 1.5 msec (when the oscillation frequency fOSC1 is 32.768 kHz) during
normal operation. The noise reject circuit does not operate immediately after turning the power on until the oscilla-
tion circuit starts oscillating. Therefore, maintain the specified input port terminals at high level for at least 1.5 msec
(when the oscillation frequency fOSC1 is 32.768 kHz) after oscillation starts. Table 4.3.1 shows the combinations of
P0x ports (P00–P03) that can be selected by a mask option.
3.1 Combinations of P0x portsTable 4.
No. Combination
1 Not used
2 P00 * P01
3 P00 * P01 * P02
4 P00 * P01 * P02 * P03
When, for instance, mask option 4 (P00 * P01 * P02 * P03) is selected, initial reset is executed when the signals
input to the four ports P00–P03 are all high at the same time. When 2 or 3 is selected, the initial reset is done when
a key entry including a combination of selected input ports is made. Further, the time authorize circuit mask option
is selected when this reset function is selected. The time authorize circuit checks the input time of the simultaneous
high input and performs initial reset if that time is the defined time (1 to 2 sec) or more. If using this function, make
sure that the specified ports do not go high at the same time during ordinary operation.
Internal Register at Initial Resetting4.4
Initial reset initializes the CPU as shown in Table 4.4.1.
The registers and flags which are not initialized by initial reset should be initialized in the program if necessary.
In particular, the stack pointers SP1 and SP2 must be set as a pair because all the interrupts including NMI are masked
after initial reset until both the SP1 and SP2 stack pointers are set with software.
When data is written to the EXT register, the E flag is set and the following instruction will be executed in the extend-
ed addressing mode. If an instruction which does not permit extended operation is used as the following instruction,
the operation is not guaranteed. Therefore, do not write data to the EXT register for initialization only.
Refer to the "S1C63000 Core CPU Manual" for extended addressing and usable instructions.
4.1 Initial valuesTable 4.
CPU core Peripheral circuit
Name Symbol Bit length Set value Name Bit length Set value
Data register A A 4 Undefined RAM 4 Undefined
Data register B B 4 Undefined Display memory 4 Undefined
Extension register EXT EXT 8 Undefined Other peripheral circuits – *
Index register X X 16 Undefined * See "I/O Memory Map."
Index register Y Y 16 Undefined
Program counter PC 16 0110H
Stack pointer SP1 SP1 8 Undefined
Stack pointer SP2 SP2 8 Undefined
Zero flag Z 1 Undefined
Carry flag C 1 Undefined
Interrupt flag I 1 0
Extension flag E 1 0
Queue register Q 16 Undefined
4 INITIAL RESET
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 4-3
(Rev. 1.1)
Terminal Settings at Initial Resetting4.5
The I/O port (P) terminals are shared with special output terminals and input/output terminals of the serial interface,
R/F converter, stopwatch timer and programmable timer (event counter). These functions are selected by software.
At initial reset, these terminals are configured to the general purpose I/O port terminals. Set them according to the
system in the initial routine.
Table 4.5.1 shows the list of the shared terminal settings.
5.1 List of shared terminal settingsTable 4.
Terminal
name
Terminal status
at initial reset
When special outputs/peripheral functions are used (selected by software)
Special output Serial I/F R/F
converter
Stopwatch
direct
input
Event
counterTOUT FOUT BZ Master Slave
P00 P00 (IN & PD*)
RUN/STOP
P01 P01 (IN & PD*) LAP
P02 P02 (IN & PD*)
P03 P03 (IN & PD*)
P10 P10 (IN & PD*) EVIN_A
P11 P11 (IN & PD*) TOUT_A
P12 P12 (IN & PD*) BZ
P13 P13 (IN & PD*) FOUT
P20–P21 P20–P21 (IN & PD*)
P22 P22 (IN & PD*) EVIN_B
P23 P23 (IN & PD*) TOUT_B
P30 P30 (IN & PD*) SCLK(O) SCLK(I)
P31 P31 (IN & PD*) SOUT(O) SOUT(O)
P32 P32 (IN & PD*) SIN(I) SIN(I)
P33 P33 (IN & PD*) SRDY(O)/SS(I)
P40–P43 P40–P43 (IN & PD*)
P50 P50 (IN & PD*) RFOUT
P51 P51 (IN & PD*) SEN0
P52 P52 (IN & PD*) REF0
P53 P53 (IN & PD*) RFIN0
* IN & PD (Input with pulled down): When "Pull-Down Used" is selected by mask option (high impedance when "Pull-
Down Not Used" is selected)
For setting procedure of the functions, see explanations for each of the peripheral circuits.
5 POWER SUPPLY
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 5-1
(Rev. 1.1)
Power Supply5
Operating Voltage5.1
The S1C6F016 operating power voltage (VDD) is as follows:
Normal operation mode: 1.8 V to 3.6 V
Flash programming mode: 2.7 V to 3.6 V
Supply a voltage within this range to between VDD (+) and VSS (GND).
Internal Power Supply Circuit5.2
The S1C6F016 incorporates the power supply circuits shown in Figure 5.2.1 so the voltages to drive the CPU, internal
logic circuits, oscillation circuits and LCD driver can be generated on the chip.
OSC1, OSC2
OSC3, OSC4
COM0–COM7
SEG0–SEG55
External
power
supply
LCD driver
VDD
VD1
VC1
VC2
VC3
CA
CB
VSS
VC1
VC2
VC3
VD1
Internal operating
voltage regulator
LCD system
voltage regulator LPWR
VCREF
VCHLMOD
VDHLMOD
Oscillation
circuit
CPU,
Internal circuits
2.1 Built-in power supply circuitFigure 5.
The power supply circuit is broadly divided into two blocks.
2.1 Power supply circuitTable 5.
Circuit Power supply circuit Output voltage
CPU, oscillation and internal circuits Internal operating voltage regulator VD1
LCD driver LCD system voltage regulator VC1–VC3
Internal operating voltage regulator
This voltage regulator always operates to generate the VD1 operating voltage for the CPU, internal logic circuits
and oscillation circuits.
LCD system voltage regulator
The LCD system voltage regulator generates the LCD drive voltages VC1 to VC3. See "Electrical Characteristics"
for the voltage values. In the S1C6F016, the LCD drive voltage is supplied to the built-in LCD driver that drives
the LCD panel connected to the SEG and COM terminals.
The LCD system voltage regulator can be disabled by mask option to supply external voltages. In this case, ex-
ternal elements can be minimized because the external capacitors for the LCD system voltage regulator are not
necessary. However when the LCD system voltage regulator is not used, the display quality of the LCD panel,
when the supply voltage fluctuates (drops), is inferior to when the LCD system voltage regulator is used.
Figure 5.2.2 shows the external element configuration when an external LCD power supply is used.
5 POWER SUPPLY
5-2 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
VDD
VC1
VC2
VC3
CA
CB
VSS
3.0 V
4.5 V LCD panel, 1/3 bias 3 V LCD panel, 1/3 bias 3 V LCD panel, 1/2 bias
C2
C3
C1
VDD
VC1
VC2
VC3
CA
CB
VSS
3.0 V
C2
C3
C1
VDD
VC1
VC2
VC3
CA
CB
VSS
3.0 V
C2
C1
2.2 External elements when an external LCD power supply is usedFigure 5.
Note: Do not use the VD1 and VC1 to VC3 terminal output voltages to drive external circuits.
Controlling LCD Power Supply5.3
The LCD system voltage regulator generates the reference voltage VC1 or VC2 and generates two other voltages (VC2
= VC1 × 2, VC3 = VC1 × 3, or VC1 = VC2 × 1/2, VC3 = VC2 × 3/2) by boosting or reducing VC1/VC2.
Use the VCREF register to select the reference voltage from VC1 and VC2 with consideration given to the supply
voltage VDD and contrast of display. Also refer to the LCD drive voltage - supply voltage characteristics (in the
“Electrical Characteristics - Characteristics Curves” section and select the appropriate reference voltage according
to the system.
To generate the LCD drive voltages by the LCD system voltage regulator (to start LCD display), turn the LCD system
voltage regulator on using the LPWR register. When "1" is written to LPWR, the LCD system voltage regulator goes
on and generates the LCD drive voltages. At initial reset, LPWR is set to "0" (Off).
When LCD display is not needed, turn the LCD system voltage regulator off to reduce power consumption.
Note: The LCD system voltage regulator takes about 100 msec for stabilizing the LCD drive voltages after
writing "1" to LPWR.
Furthermore, the LCD system voltage regulator uses the boost clock supplied from the clock manager for boosting/
reducing the voltage. The clock supply is controlled by the VCCKS[1:0] register. Set VCCKS[1:0] to "1" before
writing "1" to LPWR. When LCD display is not necessary, stop the clock supply by setting VCCKS[1:0] to "0" to
reduce power consumption.
3.1 Controlling boost clockTable 5.
VCCKS[1:0] Boost clock control
3 or 2 Prohibited
1 ON (2 kHz)
0 Off
Heavy Load Protection Function5.4
In order to ensure a stable circuit behavior and LCD display quality even if the power supply voltage fluctuates due to
driving an external load, the internal operating voltage regulator and the LCD system voltage regulator have a heavy
load protection function.
The internal operating voltage regulator enters heavy load protection mode by writing "1" to the VDHLMOD register
and it ensures stable VD1 output. Use the heavy load protection function when a heavy load such as a lamp or buzzer
is driven with a port output.
The LCD system voltage regulator enters heavy load protection mode by writing "1" to the VCHLMOD register and
it ensures stable VC1–VC3 outputs. Use the heavy load protection function when the LCD display has inconsistencies
in density.
Note: Current consumption increases in heavy load protection mode, therefore do not set heavy load
protection mode with software if unnecessary.
5 POWER SUPPLY
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 5-3
(Rev. 1.1)
I/O Memory for Power Supply Circuit5.5
Table 5.5.1 shows the I/O address and the control bits for power supply control.
5.1 Power supply control bitsTable 5.
Address Register name R/W Default Setting/data Function
FF03H D3 VCHLMOD R/W 0 1 On 0 Off
VC regulator heavy load protection mode On/Off
D2 VDHLMOD R/W 0 1 On 0 Off
VD regulator heavy load protection mode On/Off
D1 VCREF R/W 0 1 VC2 0 VC1 VC regulator reference voltage selection
D0 LPWR R/W 0 1 On 0 Off VC regulator On/Off
FF12H D3 FLCKS1 R/W 0 3 – 1 21.3 Frame frequency (Hz) selection
D2 FLCKS0 R/W 0 2 16.0 0 32.0
D1 VCCKS1 R/W 0 3 – 1 2048 VC boost frequency (Hz) selection
D0 VCCKS0 R/W 0 2 – 0 Off
*1 Initial value at initial reset *2 Not set in the circuit *3 Constantly "0" when being read
LPWR: VC regulator On/Off register (FF03H•D0)
Turns the LCD system voltage regulator on and off.
When "1" is written: On
When "0" is written: Off
Reading: Valid
When "1" is written to LPWR, the LCD system voltage regulator goes on and generates the LCD drive voltages.
When "0" is written, all the LCD drive voltages go to VSS level. It takes about 100 msec for the LCD drive volt-
ages to stabilize after starting up the LCD system voltage regulator by writing "1" to LPWR. At initial reset, this
register is set to "0."
VCREF: VC regulator reference voltage select register (FF03H•D1)
Selects the reference voltage generated in the LCD system voltage regulator.
When "1" is written: VC2
When "0" is written: VC1
Reading: Valid
When "1" is written to VCREF, the LCD system voltage regulator generates the reference voltage VC2 and gener-
ates two other voltages (VC1 = VC2 × 1/2, VC3 = VC2 × 3/2) by boosting and reducing VC2. When VCREF is "0," the
LCD system voltage regulator generates the reference voltage VC1 and generates two other voltages (VC2 = VC1 ×
2, VC3 = VC1 × 3) by boosting VC1. The reference voltage should be selected from VC1 and VC2 with consideration
given to the supply voltage VDD and contrast of display. Also refer to the LCD drive voltage - supply voltage
characteristics (in the “Electrical Characteristics - Characteristics Curves” section and select the appropriate
reference voltage according to the system. At initial reset, this register is set to "0."
VDHLMOD: VD regulator heavy load protection mode On/Off register (FF03H•D2)
Enables heavy load protection function for the internal operating voltage regulator.
When "1" is written: On
When "0" is written: Off
Reading: Valid
By writing "1" to VDHLMOD, the internal operating voltage regulator enters heavy load protection mode and it
ensures stable VD1 output. The heavy load protection function is effective when the buzzer/FOUT signal is being
output. However, heavy load protection mode increases current consumption compared with normal operation
mode. Therefore, do not set heavy load protection mode unless it is necessary. At initial reset, this register is set
to "0."
VCHLMOD: VC regulator heavy load protection mode On/Off register (FF03H•D3)
Enables heavy load protection function for the LCD system voltage regulator.
When "1" is written: On
When "0" is written: Off
Reading: Valid
5 POWER SUPPLY
5-4 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
By writing "1" to VCHLMOD, the LCD system voltage regulator enters heavy load protection mode to mini-
mize degradation in display quality when fluctuations in the supply voltage occurs due to driving a heavy load.
The heavy load protection function is effective when the OSC3 clock is used or the buzzer/FOUT signal is being
output. However, heavy load protection mode increases current consumption compared with normal operation
mode. Therefore, do not set heavy load protection mode unless it is necessary. At initial reset, this register is set
to "0."
VCCKS[1:0]: VC boost frequency select register (FF12H•D[1:0])
Controls the boost clock supply to the LCD system voltage regulator.
5.2 Controlling boost clockTable 5.
VCCKS[1:0] Boost clock control
3 or 2 Prohibited
1 ON (2 kHz)
0 Off
The LCD system voltage regulator uses the boost clock supplied from the clock manager for boosting/reducing
the voltage. Use this register to control the clock supply. Set VCCKS[1:0] to "1" before writing "1" to LPWR.
When LCD display is not necessary, stop the clock supply by setting VCCKS[1:0] to "0" to reduce power con-
sumption. At initial reset, this register is set to "0."
Precautions5.6
• Do not use the VD1 and VC1 to VC3 terminal output voltages to drive external circuits.
• The LCD system voltage regulator takes about 100 msec for stabilizing the LCD drive voltages after writing "1"
to LPWR.
• Current consumption increases in heavy load protection mode, therefore do not set heavy load protection mode
with software if unnecessary.
6 INTERRUPT CONTROLLER
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 6-1
(Rev. 1.1)
Interrupt Controller6
Configuration of Interrupt Controller6.1
The S1C6F016 supports the following seven types of interrupts.
External interrupt: • Key input interrupt (8 systems)
Internal interrupt: • Watchdog timer interrupt (NMI, 1 system)
• Programmable timer interrupt (8 systems)
• Serial interface interrupt (1 system)
• Clock timer interrupt (8 systems)
• Stopwatch timer interrupt (4 systems)
• R/F converter interrupt (3 systems)
To enable an interrupt, the interrupt flag must be set to "1" (EI) and the corresponding interrupt mask register must
be set to "1" (enable).
When an interrupt occurs, the interrupt flag is automatically reset to "0" (DI), and interrupts after that are disabled.
The watchdog timer interrupt is an NMI (non-maskable interrupt), therefore, the interrupt is generated regardless of
the interrupt flag setting. Also the interrupt mask register is not provided. However, it is possible to disable NMI since
software can stop the watchdog timer operation.
Figure 6.1.1 shows the configuration of the interrupt circuit.
Note: After an initial reset, all the interrupts including NMI are masked until both the stack pointers SP1
and SP2 are set with the software. Be sure to set the SP1 and SP2 in the initialize routine.
Further, when re-setting the stack pointer, the SP1 and SP2 must be set as a pair. When one of
them is set, all the interrupts including NMI are masked and interrupts cannot be accepted until the
other one is set.
6 INTERRUPT CONTROLLER
6-2 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
Program
counter
(low-order 4 bits)
INT
Interrupt request
NMI request
Watchdog timer
Interrupt factor flag
Interrupt mask register
Interrupt polarity select register
Interrupt select register
SLEEP cancellation
Interrupt
vector
generation
circuit
Interrupt flag
IRFE
EIRFEIRF
IRFR
EIRFR
IRUN
EIRUN
ILAP
EILAP
ISW10
EISW10
ISW1
EISW1
IPT0
EIPT0
ICTC0
EICTC0
IPT1
EIPT1
ICTC1
EICTC1
IPT2
EIPT2
ICTC2
EICTC2
IPT3
EIPT3
ICTC3
EICTC3
ISIF
EISIF
PCP03
SIP03
IK03
EIK03
IRFS
EIRFS
P03
PCP02
SIP02
IK02
EIK02
P02
PCP01
SIP01
IK01
EIK01
P01
PCP00
SIP00
IK00
EIK00
P00
PCP13
SIP13
IK13
EIK13
P13
PCP12
SIP12
IK12
EIK12
P12
PCP11
SIP11
IK11
EIK11
P11
PCP10
SIP10
IK10
EIK10
P10
IT3
EIT3
IT2
EIT2
IT1
EIT1
IT0
EIT0
IT7
EIT7
IT6
EIT6
IT5
EIT5
IT4
EIT4
1.1 Configuration of the interrupt circuitFigure 6.
6 INTERRUPT CONTROLLER
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 6-3
(Rev. 1.1)
Interrupt Factors6.2
Table 6.2.1 shows the factors for generating interrupt requests. The interrupt flags are set to "1" depending on the
corresponding interrupt factors. The CPU operation is interrupted when an interrupt factor flag is set to "1" if the
following conditions are established.
• The corresponding mask register is "1" (enabled)
• The interrupt flag is "1" (EI)
The interrupt factor flag is reset to "0" when "1" is written.
At initial reset, the interrupt factor flags are reset to "0."
* Since the watchdog timer's interrupt is NMI, the interrupt is generated regardless of the setting above, and no inter-
rupt factor flag is provided.
2.1 Interrupt factorsTable 6.
Interrupt factor Interrupt factor flag Interrupt mask register
R/F converter (error) IRFE (FFF1H•D2) EIRFE (FFE1H•D2)
R/F converter (end of reference conversion) IRFR (FFF1H•D1) EIRFR (FFE1H•D1)
R/F converter (end of sensor conversion) IRFS (FFF1H•D0) EIRFS (FFE1H•D0)
Programmable timer 0 (underflow) IPT0 (FFF2H•D1) EIPT0 (FFE2H•D1)
Programmable timer 0 (compare match) ICTC0 (FFF2H•D0) EICTC0 (FFE2H•D0)
Programmable timer 1 (underflow) IPT1 (FFF3H•D1) EIPT1 (FFE3H•D1)
Programmable timer 1 (compare match) ICTC1 (FFF3H•D0) EICTC1 (FFE3H•D0)
Programmable timer 2 (underflow) IPT2 (FFF4H•D1) EIPT2 (FFE4H•D1)
Programmable timer 2 (compare match) ICTC2 (FFF4H•D0) EICTC2 (FFE4H•D0)
Programmable timer 3 (underflow) IPT3 (FFF5H•D1) EIPT3 (FFE5H•D1)
Programmable timer 3 (compare match) ICTC3 (FFF5H•D0) EICTC3 (FFE5H•D0)
Serial interface (8-bit data input/output completion) ISIF (FFFAH•D0) EISEIF (FFEAH•D0)
Key input interrupt <P03> IK03 (FFFBH•D3) EIK03 (FFEBH•D3)
Key input interrupt <P02> IK02 (FFFBH•D2) EIK02 (FFEBH•D2)
Key input interrupt <P01> IK01 (FFFBH•D1) EIK01 (FFEBH•D1)
Key input interrupt <P00> IK00 (FFFBH•D0) EIK00 (FFEBH•D0)
Key input interrupt <P13> IK13 (FFFCH•D3) EIK13 (FFECH•D3)
Key input interrupt <P12> IK12 (FFFCH•D2) EIK12 (FFECH•D2)
Key input interrupt <P11> IK11 (FFFCH•D1) EIK11 (FFECH•D1)
Key input interrupt <P10> IK10 (FFFCH•D0) EIK10 (FFECH•D0)
Stopwatch timer (Direct RUN) IRUN (FFFDH•D3) EIRUN (FFEDH•D3)
Stopwatch timer (Direct LAP) ILAP (FFFDH•D2) EILAP (FFEDH•D2)
Stopwatch timer (1 Hz) ISW1 (FFFDH•D1) EISW1 (FFEDH•D1)
Stopwatch timer (10 Hz) ISW10 (FFFDH•D0) EISW10 (FFEDH•D0)
Clock timer 16 Hz (falling edge) IT3 (FFFEH•D3) EIT3 (FFEEH•D3)
Clock timer 32 Hz (falling edge) IT2 (FFFEH•D2) EIT2 (FFEEH•D2)
Clock timer 64 Hz (falling edge) IT1 (FFFEH•D1) EIT1 (FFEEH•D1)
Clock timer 128 Hz (falling edge) IT0 (FFFEH•D0) EIT0 (FFEEH•D0)
Clock timer 1 Hz (falling edge) IT7 (FFFFH•D3) EIT7 (FFEFH•D3)
Clock timer 2 Hz (falling edge) IT6 (FFFFH•D2) EIT6 (FFEFH•D2)
Clock timer 4 Hz (falling edge) IT5 (FFFFH•D1) EIT5 (FFEFH•D1)
Clock timer 8 Hz (falling edge) IT4 (FFFFH•D0) EIT4 (FFEFH•D0)
Note: After an interrupt occurs, the same interrupt will occur again if the interrupt enabled state (I flag =
"1") is set or the RETI instruction is executed unless the interrupt factor flag is reset. Therefore, be
sure to reset (write "1" to) the interrupt factor flag in the interrupt handler routine before shifting to
the interrupt enabled state.
Interrupt Mask6.3
The interrupt factor flags can be masked by the corresponding interrupt mask registers. The interrupt mask registers
are read/write registers. They are enabled (interrupt authorized) when "1" is written to them, and masked (interrupt
inhibited) when "0" is written to them. At initial reset, the interrupt mask register is reset to "0." Table 6.2.1 shows
the correspondence between interrupt mask registers and interrupt factor flags.
6 INTERRUPT CONTROLLER
6-4 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
Interrupt Vector6.4
When an interrupt request is input to the CPU, the CPU begins interrupt processing. After the program being executed
is terminated, the interrupt processing is executed in the following order.
1. The content of the flag register is evacuated, then the I flag is reset.
2. The address data (value of program counter) of the program to be executed next is saved in the stack area
(RAM).
3. The interrupt request causes the value of the interrupt vector (0100H–010FH) to be set in the program counter.
4. The program at the specified address is executed (execution of interrupt handler routine by software).
Table 6.4.1 shows the correspondence of interrupt requests and interrupt vectors.
4.1 Interrupt request and interrupt vectorsTable 6.
Interrupt vector Interrupt factor Priority
0100H Watchdog timer High
0101H R/F converter ↑
0102H Programmable timer 0
0103H Programmable timer 1
0104H Programmable timer 2
0105H Programmable timer 3
0106H Reserved
0107H Reserved
0108H Reserved
0109H Reserved
010AH Serial interface
010BH Key input interrupt <P0>
010CH Key input interrupt <P1>
010DH Stopwatch timer
010EH Clock timer (128 Hz, 64 Hz, 32 Hz, 16 Hz) ↓
010FH Clock timer (8 Hz, 4 Hz, 2 Hz, 1 Hz) Low
The four low-order bits of the program counter are indirectly addressed through the interrupt request.
Note: The interrupt handler routine must be located within the range from "Interrupt vector address
(100H–10FH)" -7FH to +80H. If it is difficult, make a relay point within that range as the destination
of the vector jump and branch the program to the interrupt handler from there.
Example:
;******************************************************************************
;** interrupt vector area **
;******************************************************************************
.org 0x0100
JR INT_DUMMY ;WATCH DOG TIMER INTERRUPT VECTOR(0x100)
JR INT_RFC ;RFC INTERRUPT VECTOR(0x101)
JR INT_DUMMY ;PTIMER0 INTERRUPT VECTOR(0x102)
JR INT_DUMMY ;PTIMER1 INTERRUPT VECTOR(0x103)
JR INT_DUMMY ;PTIMER2 INTERRUPT VECTOR(0x104)
JR INT_DUMMY ;PTIMER3 INTERRUPT VECTOR(0x105)
JR INT_DUMMY ;Reserved
JR INT_DUMMY ;Reserved
JR INT_DUMMY ;Reserved
JR INT_DUMMY ;Reserved
JR INT_DUMMY ;SIO INTERRUPT VECTOR(0x10A)
JR INT_DUMMY ;P0x PORT INTERRUPT VECTOR(0x10B)
JR INT_DUMMY ;P1x PORT INTERRUPT VECTOR(0x10C)
JR INT_DUMMY ;STOPWATCH INTERRUPT VECTOR(0x10D)
JR INT_DUMMY ;CLOCK TIMER1 INTERRUPT VECTOR(0x10E)
JR INT_DUMMY ;CLOCK TIMER2 INTERRUPT VECTOR(0x10F)
;******************************************************************************
;** subinterrupt vector area **
;******************************************************************************
.org 0x120
INT_RFC:
CALR INTRFC ;call Interrupt RFC
RETI
6 INTERRUPT CONTROLLER
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 6-5
(Rev. 1.1)
INT_DUMMY:
RETI
;******************************************************************************
;** Interrupt RFC **
;******************************************************************************
.org 0x800
INTRFC:
LDB %yl,P5CTL0@l
LDB %xl,ITC_RFC1@l
LD [%y],[%x] ;Port Output
RET
I/O Memory of Interrupt Controller6.5
Table 6.5.1 shows the I/O addresses and the control bits for controlling interrupts.
5.1 Control bits of interrupt controllerTable 6.
Address Register name R/W Default Setting/data Function
FFE1H D3 0 (*3) R – (*2) – Unused
D2 EIRFE R/W 0 1 Enable 0 Mask Interrupt mask register (RFC error)
D1 EIRFR R/W 0 1 Enable 0 Mask Interrupt mask register (RFC REF completion)
D0 EIRFS R/W 0 1 Enable 0 Mask
Interrupt mask register
(RFC SEN completion)
FFE2H D3 0 (*3) R – (*2) – Unused
D2 0 (*3) R – (*2) – Unused
D1 EIPT0 R/W 0 1 Enable 0 Mask Interrupt mask register (PT0 underflow)
D0 EICTC0 R/W 0 1 Enable 0 Mask Interrupt mask register (PT0 compare match)
FFE3H D3 0 (*3) R – (*2) – Unused
D2 0 (*3) R – (*2) – Unused
D1 EIPT1 R/W 0 1 Enable 0 Mask Interrupt mask register (PT1 underflow)
D0 EICTC1 R/W 0 1 Enable 0 Mask Interrupt mask register (PT1 compare match)
FFE4H D3 0 (*3) R – (*2) – Unused
D2 0 (*3) R – (*2) – Unused
D1 EIPT2 R/W 0 1 Enable 0 Mask Interrupt mask register (PT2 underflow)
D0 EICTC2 R/W 0 1 Enable 0 Mask Interrupt mask register (PT2 compare match)
FFE5H D3 0 (*3) R – (*2) – Unused
D2 0 (*3) R – (*2) – Unused
D1 EIPT3 R/W 0 1 Enable 0 Mask Interrupt mask register (PT3 underflow)
D0 EICTC3 R/W 0 1 Enable 0 Mask Interrupt mask register (PT3 compare match)
FFEAH D3 0 (*3) R – (*2) – Unused
D2 0 (*3) R – (*2) – Unused
D1 0 (*3) R – (*2) – Unused
D0 EISIF R/W 0 1 Enable 0 Mask Interrupt mask register (Serial I/F)
FFEBH D3 EIK03 R/W 0 1 Enable 0 Mask Interrupt mask register (KEY03<P03>)
D2 EIK02 R/W 0 1 Enable 0 Mask Interrupt mask register (KEY02<P02>)
D1 EIK01 R/W 0 1 Enable 0 Mask Interrupt mask register (KEY01<P01>)
D0 EIK00 R/W 0 1 Enable 0 Mask Interrupt mask register (KEY00<P00>)
FFECH D3 EIK13 R/W 0 1 Enable 0 Mask Interrupt mask register (KEY13<P13>)
D2 EIK12 R/W 0 1 Enable 0 Mask Interrupt mask register (KEY12<P12>)
D1 EIK11 R/W 0 1 Enable 0 Mask Interrupt mask register (KEY11<P11>)
D0 EIK10 R/W 0 1 Enable 0 Mask Interrupt mask register (KEY10<P10>)
FFEDH D3 EIRUN R/W 0 1 Enable 0 Mask Interrupt mask register (SW direct RUN)
D2 EILAP R/W 0 1 Enable 0 Mask Interrupt mask register (SW direct LAP)
D1 EISW1 R/W 0 1 Enable 0 Mask
Interrupt mask register (Stopwatch 1 Hz)
D0 EISW10 R/W 0 1 Enable 0 Mask
Interrupt mask register (Stopwatch 10 Hz)
FFEEH D3 EIT3 R/W 0 1 Enable 0 Mask Interrupt mask register (Clock timer 16 Hz)
D2 EIT2 R/W 0 1 Enable 0 Mask Interrupt mask register (Clock timer 32 Hz)
D1 EIT1 R/W 0 1 Enable 0 Mask Interrupt mask register (Clock timer 64 Hz)
D0 EIT0 R/W 0 1 Enable 0 Mask Interrupt mask register (Clock timer 128 Hz)
FFEFH D3 EIT7 R/W 0 1 Enable 0 Mask Interrupt mask register (Clock timer 1 Hz)
D2 EIT6 R/W 0 1 Enable 0 Mask Interrupt mask register (Clock timer 2 Hz)
D1 EIT5 R/W 0 1 Enable 0 Mask Interrupt mask register (Clock timer 4 Hz)
D0 EIT4 R/W 0 1 Enable 0 Mask Interrupt mask register (Clock timer 8 Hz)
6 INTERRUPT CONTROLLER
6-6 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
Address Register name R/W Default Setting/data Function
FFF1H D3 0 (*3) R – (*2) – Unused
D2 IRFE R/W 0 1 Occurred (R)
Reset (W)
0 Not occurred (R)
Invalid (W)
Interrupt factor flag (RFC error)
D1 IRFR R/W 0 Interrupt factor flag (RFC REF completion)
D0 IRFS R/W 0 Interrupt factor flag (RFC SEN completion)
FFF2H D3 0 (*3) R – (*2) – Unused
D2 0 (*3) R – (*2) – Unused
D1 IPT0 R/W 0 1 Occurred (R)
Reset (W)
0 Not occurred (R)
Invalid (W)
Interrupt factor flag (PT0 underflow)
D0 ICTC0 R/W 0 Interrupt factor flag (PT0 compare match)
FFF3H D3 0 (*3) R – (*2) – Unused
D2 0 (*3) R – (*2) – Unused
D1 IPT1 R/W 0 1 Occurred (R)
Reset (W)
0 Not occurred (R)
Invalid (W)
Interrupt factor flag (PT1 underflow)
D0 ICTC1 R/W 0 Interrupt factor flag (PT1 compare match)
FFF4H D3 0 (*3) R – (*2) – Unused
D2 0 (*3) R – (*2) – Unused
D1 IPT2 R/W 0 1 Occurred (R)
Reset (W)
0 Not occurred (R)
Invalid (W)
Interrupt factor flag (PT2 underflow)
D0 ICTC2 R/W 0 Interrupt factor flag (PT2 compare match)
FFF5H D3 0 (*3) R – (*2) – Unused
D2 0 (*3) R – (*2) – Unused
D1 IPT3 R/W 0 1 Occurred (R)
Reset (W)
0 Not occurred (R)
Invalid (W)
Interrupt factor flag (PT3 underflow)
D0 ICTC3 R/W 0 Interrupt factor flag (PT3 compare match)
FFFAH D3 0 (*3) R – (*2) – Unused
D2 0 (*3) R – (*2) – Unused
D1 0 (*3) R – (*2) – Unused
D0 ISIF R/W 0 1 Occurred (R)
Reset (W)
0 Not occurred (R)
Invalid (W)
Interrupt factor flag (Serial I/F)
FFFBH D3 IK03 R/W 0 1 Occurred (R)
Reset (W)
0 Not occurred (R)
Invalid (W)
Interrupt factor flag (KEY03<P03>)
D2 IK02 R/W 0 Interrupt factor flag (KEY02<P02>)
D1 IK01 R/W 0 Interrupt factor flag (KEY01<P01>)
D0 IK00 R/W 0 Interrupt factor flag (KEY00<P00>)
FFFCH D3 IK13 R/W 0 1 Occurred (R)
Reset (W)
0 Not occurred (R)
Invalid (W)
Interrupt factor flag (KEY13<P13>)
D2 IK12 R/W 0 Interrupt factor flag (KEY12<P12>)
D1 IK11 R/W 0 Interrupt factor flag (KEY11<P11>)
D0 IK10 R/W 0 Interrupt factor flag (KEY10<P10>)
FFFDH D3 IRUN R/W 0 1 Occurred (R)
Reset (W)
0 Not occurred (R)
Invalid (W)
Interrupt factor flag (SW direct RUN)
D2 ILAP R/W 0 Interrupt factor flag (SW direct LAP)
D1 ISW1 R/W 0 Interrupt factor flag
(Stopwatch 1 Hz)
D0 ISW10 R/W 0 Interrupt factor flag
(Stopwatch 10 Hz)
FFFEH D3 IT3 R/W 0 1 Occurred (R)
Reset (W)
0 Not occurred (R)
Invalid (W)
Interrupt factor flag (Clock timer 16 Hz)
D2 IT2 R/W 0 Interrupt factor flag (Clock timer 32 Hz)
D1 IT1 R/W 0 Interrupt factor flag (Clock timer 64 Hz)
D0 IT0 R/W 0 Interrupt factor flag (Clock timer 128 Hz)
FFFFH D3 IT7 R/W 0 1 Occurred (R)
Reset (W)
0 Not occurred (R)
Invalid (W)
Interrupt factor flag (Clock timer 1 Hz)
D2 IT6 R/W 0 Interrupt factor flag (Clock timer 2 Hz)
D1 IT5 R/W 0 Interrupt factor flag (Clock timer 4 Hz)
D0 IT4 R/W 0 Interrupt factor flag (Clock timer 8 Hz)
*1: Initial value at initial reset *2: Not set in the circuit *3: Constantly "0" when being read
EI***: Interrupt mask registers (FFE1H–FFEFH)
Selects whether interrupts generated by interrupt factors are masked or not.
When "1" is written: Enable
When "0" is written: Mask
Reading: Valid
When the interrupt mask register is set to "1," an interrupt to the CPU will be generated if the corresponding
interrupt flag is set to 1. Setting the interrupt mask register to "0" masks the interrupt factor and no interrupt will
be generated. At initial reset, the interrupt mask registers are set to "0."
6 INTERRUPT CONTROLLER
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 6-7
(Rev. 1.1)
I***: Interrupt factor flags (FFF1H–FFFFH)
These flags indicate that the interrupt factor has occurred or not.
When "1" is read: Interrupt factor has occurred
When "0" is read: Interrupt factor has not occurred
When "1" is written: Flag is reset
When "0" is written: Invalid
The interrupt factor flags are set to "1" when each interrupt factor in the peripheral circuit has occurred. From
the status of the interrupt factor flag, the software can determine if the interrupt factor has occurred. If the cor-
responding interrupt mask register has been set to "1" (interrupt enabled), an interrupt is generated to the CPU
when the interrupt factor flag is set to 1.
The interrupt factor flag is always set to "1" when the interrupt factor occurs regardless of the interrupt mask
register setting. The interrupt flag is reset to "0" by writing "1."
After an interrupt has occurred, the same interrupt will occur again if interrupts are enabled (I flag = "1") or the
RETI instruction is executed unless the interrupt factor flag is reset. Therefore, be sure to reset (write "1" to) the
interrupt factor flag in the interrupt handler routine before enabling the interrupt.
After an initial reset, the interrupt factor flags are set to "0."
5.2 Interrupt factorsTable 6.
Interrupt factor Interrupt factor flag Interrupt mask register
R/F converter (error) IRFE (FFF1H•D2) EIRFE (FFE1H•D2)
R/F converter (end of reference conversion) IRFR (FFF1H•D1) EIRFR (FFE1H•D1)
R/F converter (end of sensor conversion) IRFS (FFF1H•D0) EIRFS (FFE1H•D0)
Programmable timer 0 (underflow) IPT0 (FFF2H•D1) EIPT0 (FFE2H•D1)
Programmable timer 0 (compare match) ICTC0 (FFF2H•D0) EICTC0 (FFE2H•D0)
Programmable timer 1 (underflow) IPT1 (FFF3H•D1) EIPT1 (FFE3H•D1)
Programmable timer 1 (compare match) ICTC1 (FFF3H•D0) EICTC1 (FFE3H•D0)
Programmable timer 2 (underflow) IPT2 (FFF4H•D1) EIPT2 (FFE4H•D1)
Programmable timer 2 (compare match) ICTC2 (FFF4H•D0) EICTC2 (FFE4H•D0)
Programmable timer 3 (underflow) IPT3 (FFF5H•D1) EIPT3 (FFE5H•D1)
Programmable timer 3 (compare match) ICTC3 (FFF5H•D0) EICTC3 (FFE5H•D0)
Serial interface (8-bit data input/output completion) ISIF (FFFAH•D0) EISEIF (FFEAH•D0)
Key input interrupt <P03> IK03 (FFFBH•D3) EIK03 (FFEBH•D3)
Key input interrupt <P02> IK02 (FFFBH•D2) EIK02 (FFEBH•D2)
Key input interrupt <P01> IK01 (FFFBH•D1) EIK01 (FFEBH•D1)
Key input interrupt <P00> IK00 (FFFBH•D0) EIK00 (FFEBH•D0)
Key input interrupt <P13> IK13 (FFFCH•D3) EIK13 (FFECH•D3)
Key input interrupt <P12> IK12 (FFFCH•D2) EIK12 (FFECH•D2)
Key input interrupt <P11> IK11 (FFFCH•D1) EIK11 (FFECH•D1)
Key input interrupt <P10> IK10 (FFFCH•D0) EIK10 (FFECH•D0)
Stopwatch timer (Direct RUN) IRUN (FFFDH•D3) EIRUN (FFEDH•D3)
Stopwatch timer (Direct LAP) ILAP (FFFDH•D2) EILAP (FFEDH•D2)
Stopwatch timer (1 Hz) ISW1 (FFFDH•D1) EISW1 (FFEDH•D1)
Stopwatch timer (10 Hz) ISW10 (FFFDH•D0) EISW10 (FFEDH•D0)
Clock timer 16 Hz (falling edge) IT3 (FFFEH•D3) EIT3 (FFEEH•D3)
Clock timer 32 Hz (falling edge) IT2 (FFFEH•D2) EIT2 (FFEEH•D2)
Clock timer 64 Hz (falling edge) IT1 (FFFEH•D1) EIT1 (FFEEH•D1)
Clock timer 128 Hz (falling edge) IT0 (FFFEH•D0) EIT0 (FFEEH•D0)
Clock timer 1 Hz (falling edge) IT7 (FFFFH•D3) EIT7 (FFEFH•D3)
Clock timer 2 Hz (falling edge) IT6 (FFFFH•D2) EIT6 (FFEFH•D2)
Clock timer 4 Hz (falling edge) IT5 (FFFFH•D1) EIT5 (FFEFH•D1)
Clock timer 8 Hz (falling edge) IT4 (FFFFH•D0) EIT4 (FFEFH•D0)
Refer to the descriptions of the peripheral circuits for interrupt factor occurrence conditions.
6 INTERRUPT CONTROLLER
6-8 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
Precautions6.6
• The interrupt factor flags are set when the interrupt condition is established, even if the interrupt mask registers are
set to "0."
• After an interrupt occurs, the same interrupt will occur again if the interrupt enabled state (I flag = "1") is set or the
RETI instruction is executed unless the interrupt factor flag is reset. Therefore, be sure to reset (write "1" to) the
interrupt factor flag in the interrupt handler routine before shifting to the interrupt enabled state.
• After an initial reset, all the interrupts including NMI are masked until both the stack pointers SP1 and SP2 are set
with the software. Be sure to set the SP1 and SP2 in the initialize routine. Further, when re-setting the stack pointer,
the SP1 and SP2 must be set as a pair. When one of them is set, all the interrupts including NMI are masked and
interrupts cannot be accepted until the other one is set.
• The interrupt handler routine must be located within the range from "Interrupt vector address (100H–10FH)" -7FH
to +80H. If it is difficult, make a relay point within that range as the destination of the vector jump and branch the
program to the interrupt handler from there.
• Both the OSC1 and OSC3 oscillation circuits stop oscillating when the CPU enters SLEEP mode. To prevent the
CPU from a malfunction when it resumes operating from SLEEP mode, switch the CPU clock to OSC1 before
placing the CPU into SLEEP mode.
7 OSCILLATION CIRCUIT AND CLOCK CONTROL
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 7-1
(Rev. 1.1)
Oscillation Circuit and Clock Control7
Oscillation Circuit7.1
Configuration of Oscillation Circuit7.1.1
The S1C6F016 is configured as a twin clock system with two internal oscillation circuits (OSC1 and OSC3). The
OSC1 oscillation circuit generates the main-clock (Typ. 32.768 kHz) for low-power operation and the OSC3 oscilla-
tion circuit generates the sub-clock (Max. 4.2 MHz) to run the CPU and some peripheral circuits in high speed.
Figure 7.1.1.1 shows the configuration of the oscillation circuit.
To CPU
OSC1
oscillation circuit
Clock
switch
OSC3
oscillation circuit
To peripheral
circuits
OSCC
Oscillation circuit
control signal
CLKCHG
CPU clock
selection signal
To some peripheral
circuits
SLEEP
status
Prescaler
(fOSC1)
(fOSC3)
1.1.1 Oscillation circuit block diagramFigure 7.
At initial reset, OSC1 oscillation circuit is selected as the CPU operating clock source. The S1C6F016 allows the
software to turn the OSC3 oscillation circuit on and off, and to switch the system clock between OSC3 and OSC1.
The OSC3 oscillation circuit is used when the CPU and some peripheral circuits need high speed operation. Other-
wise, use the OSC1 oscillation circuit to generate the operating clock and stop the OSC3 oscillation circuit to reduce
current consumption.
Mask Option7.1.2
Standard mask option Type B
The OSC1 oscillator type is fixed at crystal and the OSC3 oscillator type is fixed at ceramic.
Standard mask option Type E and Type G
The OSC1 oscillator type is fixed at crystal and the OSC3 oscillator type is fixed at CR (external R).
Custom mask option
The OSC1 oscillator type is fixed at crystal.
The OSC3 oscillator type can be selected from ceramic, CR (external R) or CR (built-in R).
OSC1 Oscillation Circuit7.1.3
The OSC1 oscillation circuit generates the 32.768 kHz (Typ.) system clock which is used during low speed (low
power) operation of the CPU and peripheral circuits. Furthermore, even when OSC3 is used as the system clock,
OSC1 continues to generate the source clock for the clock timer and stopwatch timer. This oscillation circuit stops
when the SLP instruction is executed.
Figure 7.1.3.1 shows the configuration of the OSC1 oscillation circuit.
7 OSCILLATION CIRCUIT AND CLOCK CONTROL
7-2 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
fOSC1
VSS
VSS
OSC2
OSC1
X'tal
CG1
SLEEP status
1.3.1 OSC1 oscillation circuit (crystal oscillation)Figure 7.
A crystal oscillation circuit can be configured simply by connecting a crystal resonator X'tal (Typ. 32.768 kHz)
between the OSC1 and OSC2 terminals along with a trimmer capacitor CG1 (0–25 pF) between the OSC1 terminal
and VSS.
OSC3 Oscillation Circuit7.1.4
The OSC3 oscillation circuit generates the system clock to run the CPU and some peripheral circuits at high speed.
This oscillation circuit stops when the SLP instruction is executed or the OSCC register is set to "0."
The oscillator type can be selected by mask option.
Standard mask option Type B: Ceramic (fixed)
Standard mask option Type E and Type G: CR (external R) (fixed)
Custom mask option: Ceramic, CR (external R) or CR (built-in R) (selectable)
Figure 7.1.4.1 shows the configuration of the OSC3 oscillation circuit.
fOSC3
Oscillation circuit
control signal
SLEEP status
VSS
OSC4
OSC3
CD3
CG3
Rf
Ceramic
(1) Ceramic oscillation circuit
fOSC3
Oscillation circuit
control signal
SLEEP status
OSC4
OSC3
RCR
(2) CR oscillation circuit (external R)
RCR
Oscillation circuit
control signal
SLEEP status
fOSC3
(3) CR oscillation circuit (built-in R)
1.4.1 OSC3 oscillation circuitFigure 7.
When ceramic oscillation circuit is selected, connect a ceramic resonator (Ceramic) between the OSC3 and OSC4
terminals and connecting two capacitors (CG3, CD3) between the OSC3 terminal and VSS, and between the OSC4
terminal and VSS, respectively.
When CR (external R) is selected, connect a resistor (RCR) between the OSC3 and OSC4 terminals.
The CR (built-in R) oscillator does not need any external elements. Leave the OSC3 and OSC4 terminals open.
7 OSCILLATION CIRCUIT AND CLOCK CONTROL
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 7-3
(Rev. 1.1)
1.4.1 OSC3 oscillation frequencyTable 7.
Oscillator type Oscillation frequency
Ceramic Max. 4.2 MHz
CR (external R) 30 kHz to 2.2 MHz
CR (built-in R) Typ. 500 kHz ± 25%
Switching the CPU Clock7.2
Either the OSC1 clock or the OSC3 clock can be selected as the CPU system clock using the CLKCHG register.
The OSC3 oscillation circuit can be turned off (OSCC = "0") to save power while the CPU is operating with the OSC1
clock (CLKCHG = "0").
If the system needs high speed operation, turn the OSC3 oscillation circuit on (OSCC = "1") and switch over the
system clock to OSC3 (CLKCHG = "0" → "1").
In this case, since several tens of µsec to several tens of msec are necessary for the oscillation to stabilize after turn-
ing the OSC3 oscillation circuit on, you should switch over the clock after the stabilization time has elapsed. The
oscillation start time will vary somewhat depending on the resonator and on the externally attached parts. Refer to
the oscillation start time example indicated in the "Electrical Characteristics" chapter.
When switching the clock from OSC3 to OSC1 (CLKCHG = "1" → "0"), be sure to switch OSC3 oscillation off with
separate instructions. Using a single instruction to process simultaneously may cause a malfunction of the CPU.
Figure 7.2.1 indicates the status transition diagram for the clock switch over.
RESET
OSCC=1
OSCC=0
CLKCHG=1
CLKCHG=0
ON
ON or OFF
STOP
HALT status
OSC1
OSC3
CPU clock
OFF
OFF
STOP
SLEEP status
OSC1
OSC3
CPU clock
Program Execution Status
HALT instruction SLP instructionInterrupt Interrupt
(Key input interrupt)
Standby Status
**
ON
ON
OSC3
High speed operation
OSC1
OSC3
CPU clock
ON
ON
OSC1
Low speed operation
OSC1
OSC3
CPU clock
Low speed and
low power operation
ON
OFF
OSC1
OSC1
OSC3
CPU clock
* The return destination from the standby status becomes the program execution status prior to
shifting to the standby status.
2.1 Status transition diagram for clock switch overFigure 7.
HALT and SLEEP7.3
The S1C6F016 supports both HALT and SLEEP modes for power saving during standby.
HALT mode
The CPU enters HALT mode and stops operating when it executes the HALT instruction. However, timer coun-
ters and peripheral circuits continue operating since the oscillation circuit operates in HALT mode. Reactivating
the CPU from HALT status is done by generating a hardware interrupt request including NMI.
7 OSCILLATION CIRCUIT AND CLOCK CONTROL
7-4 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
SLEEP mode
The CPU enters SLEEP mode when it executes the SLP instruction. In this mode, the CPU, and oscillation cir-
cuits (both OSC1 and OSC3) stop operating. Current consumption can considerably be reduced, as SLEEP mode
stop all the peripheral circuits that operate with the internal clocks. To prevent improper operation after the CPU
wakes up, be sure to run the CPU with the OSC1 clock before setting the CPU into SLEEP mode.
The system can only be reactivated from SLEEP mode by a key input interrupt request from a P0x or P1x port. To
ensure that the system enters and cancels SLEEP mode properly, follow the procedure shown below to configure/
confirm the CPU clock, interrupt flag, the P0x (P1x) I/O port used to cancel SLEEP mode, and the port input
level.
1. Set the CPU system clock switching register CLKCHG to "0." (The OSC1 clock is selected.)
2. Set the interrupt select register SIPxx to "1." (The P0x (P1x) I/O port interrupt is selected.)
3. Set the interrupt mask register EIKxx to "1." (The P0x (P1x) I/O port interrupt is enabled.)
4. Set the key input interrupt noise reject frequency select register NRSPxx to "00." (The noise rejector is by-
passed.)
5. Write "1" to the interrupt factor flag IKxx. (The P0x (P1x) interrupt factor flag is reset.)
6. Set the interrupt flag (I flag) to "1." (Interrupts are enabled.)
7a. Make sure the P0x (P1x) port input level is high when P0x (P1x) port interrupt polarity select register PCPxx
= "1" (generates an interrupt request at the falling edge).
7b. Make sure the P0x (P1x) port input level is low when P0x (P1x) port interrupt polarity select register PCPxx
= "0" (generates an interrupt request at the rising edge).
8. Execute the SLP instruction.
When SLEEP status is canceled by an I/O port interrupt, the CPU restarts operating (input port interrupt process-
ing) after waiting for oscillation to stabilize. Refer to the "S1C63000 Core CPU Manual" for transition to HALT/
SLEEP mode and timing of its cancellation.
Control of Peripheral Circuit Clocks7.4
The S1C6F016 incorporates a clock manager that generates operating clocks by dividing the OSC1/OSC3 clock out-
put from the oscillation circuit and supplies the clocks to the peripheral circuits. Some peripheral circuits can select
the operating clock to be used from several dividing clocks in the clock manager. If the current processing does not
use peripheral circuits, the clock supply to those circuits can be stopped in the clock manager. Disabling unnecessary
clocks to be supplied or operating the peripheral circuits with a clock as low frequency as possible can reduce current
consumption. For controlling the clock manager, see the descriptions in each peripheral circuit.
Clock Output (FOUT)7.5
In order for the S1C6F016 to provide a clock signal to an external device, the FOUT signal (oscillation clock fOSC1,
fOSC3, or a dividing clock) can be output from the FOUT (P13) terminal. The FOUT output is controlled using the
FOUT[3:0] register. When the output clock frequency is selected using FOUT[3:0], the FOUT signal is output
from the FOUT terminal. The P13 I/O port functions are disabled while the FOUT signal is being output. Setting
FOUT[3:0] to 0H disables FOUT output and the P13 port is configured as a general-purpose input/output port. The
FOUT signal frequency can be selected from among 15 settings as shown in Table 7.5.1.
7 OSCILLATION CIRCUIT AND CLOCK CONTROL
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 7-5
(Rev. 1.1)
5.1 FOUT frequency selectionTable 7.
FOUT[3:0] FOUT frequency
FH fOSC3
EH fOSC3 / 2
DH fOSC3 / 4
CH fOSC3 / 8
BH fOSC3 / 16
AH fOSC3 / 32
9H fOSC3 / 64
8H fOSC3 / 256
7H fOSC1 (32 kHz)
6H fOSC1 / 2 (16 kHz)
5H fOSC1 / 4 (8 kHz)
4H fOSC1 / 16 (2 kHz)
3H fOSC1 / 32 (1 kHz)
2H fOSC1 / 64 (512 Hz)
1H fOSC1 / 256 (128 Hz)
0H Off
fOSC1: OSC1 oscillation frequency. ( ) indicates the clock frequency when fOSC1 = 32 kHz.
fOSC3: OSC3 oscillation frequency
When the FOUT frequency is set to "fOSC3/n," the OSC3 oscillation circuit must be turned on before outputting the
FOUT signal. A time interval of several tens of µsec to several tens of msec, from turning the OSC3 oscillation circuit
on until the oscillation stabilizes, is necessary. Consequently, if an abnormality occurs as the result of an unstable
FOUT signal being output externally, you should allow an adequate waiting time after turning the OSC3 oscillation
on, before starting FOUT output. Since the FOUT signal is generated asynchronously from the FOUT[3:0] register,
a hazard of a 1/2 cycle or less is generated when the signal is turned on or off by setting the registers. Figure 7.5.1
shows the output waveform of the FOUT signal.
FOUT[3:0]
FOUT output (P13)
0H 0HOther than 0H
5.1 Output waveform of FOUT signalFigure 7.
I/O Memory for Oscillation Circuit/Clock Output Control7.6
Table 7.6.1 shows the I/O address and the control bits for the oscillation circuit and FOUT output.
6.1 Control bits of oscillation circuit/FOUTTable 7.
Address Register name R/W Default Setting/data Function
FF00H D3 CLKCHG R/W 0 1 OSC3 0 OSC1 CPU clock switch
D2 OSCC R/W 0 1 On 0 Off OSC3 oscillation On/Off
D1 0 (*3) R – (*2) – Unused
D0 0 (*3) R – (*2) – Unused
FF10H D3 FOUT3 R/W 0 F f3B f3/16 7 f13 f1/32 FOUT frequency selection
(f1 = fOSC1, f3 = fOSC3)
D2 FOUT2 R/W 0 E f3/2 A f3/32 6 f1/2 2 f1/64
D1 FOUT1 R/W 0 D f3/4 9 f3/64 5 f1/4 1 f1/256
D0 FOUT0 R/W 0 C f3/8 8 f3/256 4 f1/16 0 Off
*1: Initial value at initial reset *2: Not set in the circuit *3: Constantly "0" when being read
OSCC: OSC3 oscillation control register (FF00H•D2)
Turns the OSC3 oscillation circuit on and off.
When "1" is written: OSC3 oscillation On
When "0" is written: OSC3 oscillation Off
Reading: Valid
When it is necessary to operate the CPU at high speed, set OSCC to "1." At other times, set it to "0" to reduce
current consumption. At initial reset, this register is set to "0."
7 OSCILLATION CIRCUIT AND CLOCK CONTROL
7-6 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
CLKCHG: CPU system clock switching register (FF00H•D3)
The CPU's operation clock is selected with this register.
When "1" is written: OSC3 clock is selected
When "0" is written: OSC1 clock is selected
Reading: Valid
When the CPU clock is to be OSC3, set CLKCHG to "1"; for OSC1, set CLKCHG to "0." At initial reset, this
register is set to "0."
FOUT[3:0]: FOUT frequency select register (FF10H)
Selects the frequency of the FOUT signal and controls the FOUT output.
6.2 FOUT clock frequencyTable 7.
FOUT[3:0] FOUT frequency
FH fOSC3
EH fOSC3 / 2
DH fOSC3 / 4
CH fOSC3 / 8
BH fOSC3 / 16
AH fOSC3 / 32
9H fOSC3 / 64
8H fOSC3 / 256
7H fOSC1 (32 kHz)
6H fOSC1 / 2 (16 kHz)
5H fOSC1 / 4 (8 kHz)
4H fOSC1 / 16 (2 kHz)
3H fOSC1 / 32 (1 kHz)
2H fOSC1 / 64 (512 Hz)
1H fOSC1 / 256 (128 Hz)
0H Off
fOSC1: OSC1 oscillation frequency. ( ) indicates the clock frequency when fOSC1 = 32 kHz.
fOSC3: OSC3 oscillation frequency
Selecting an FOUT frequency (writing 1H–FH to this register) outputs the FOUT signal from the FOUT (P13)
terminal. Set FOUT[3:0] to "0" to use P13 as a general-purpose input/output port. At initial reset, this register is
set to "0."
Precautions7.7
• When high speed CPU operations are not necessary, you should operate the peripheral circuits with the setting
shown below.
- CPU operating clock: OSC1
- OSC3 oscillation circuit: Off (When the OSC3 clock is not necessary for peripheral circuits.)
- Clock manager: Disable the clock supply to unnecessary peripheral circuits.
• Since several tens of µsec to several tens of msec are necessary for the oscillation to stabilize after turning the OSC3
oscillation circuit on. Consequently, you should switch the CPU operating clock (OSC1 → OSC3) after allowing
for a sufficient waiting time once the OSC3 oscillation goes on. The oscillation start time will vary somewhat de-
pending on the resonator and externally attached parts. Refer to the oscillation start time example indicated in the
"Electrical Characteristics" chapter.
• When switching the clock from OSC3 to OSC1, be sure to switch OSC3 oscillation off with separate instructions.
Using a single instruction to process simultaneously can cause a malfunction of the CPU.
• Both the OSC1 and OSC3 oscillation circuits stop oscillating when the CPU enters SLEEP mode. To prevent the
CPU from a malfunction when it resumes operating from SLEEP mode, switch the CPU clock to OSC1 before
placing the CPU into SLEEP mode.
8 WATCHDOG TIMER
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 8-1
(Rev. 1.1)
Watchdog Timer8
Configuration of Watchdog Timer8.1
The S1C6F016 has a built-in watchdog timer that operates with a 256 Hz divided clock from the OSC1 as the source
clock. The watchdog timer starts operating after initial reset, however, it can be stopped by the software. The watch-
dog timer must be reset cyclically by the software while it operates. If the watchdog timer is not reset in at least 3–4
seconds, it generates a non-maskable interrupt (NMI) to the CPU.
Figure 8.1.1 is the block diagram of the watchdog timer.
Watchdog timer Non-maskable
interrupt (NMI)
OSC1 dividing signal 256 Hz
Watchdog timer enable signal
Watchdog timer reset signal
1.1 Watchdog timer block diagramFigure 8.
The watchdog timer contains a 10-bit binary counter, and generates the non-maskable interrupt when the last stage
of the counter (0.25 Hz) overflows.
Watchdog timer reset processing in the program's main routine enables detection of program overrun, such as when
the main routine's watchdog timer processing is bypassed. Ordinarily this routine is incorporated where periodic
processing takes place, just as for the timer interrupt routine.
The watchdog timer operates in the HALT mode. If a HALT status continues for 3–4 seconds, the non-maskable
interrupt releases the HALT status.
Interrupt Function8.2
If the watchdog timer is not reset periodically, the non-maskable interrupt (NMI) is generated to the core CPU. Since
this interrupt cannot be masked, it is accepted even in the interrupt disable status (I flag = "0"). However, it is not
accepted when the CPU is in the interrupt mask state until SP1 and SP2 are set as a pair, such as after initial reset or
during re-setting the stack pointer. The interrupt vector of NMI is assigned to 0100H in the program memory.
I/O Memory of Watchdog Timer8.3
Table 8.3.1 shows the I/O address and control bits for the watchdog timer.
3.1 Control bits of watchdog timerTable 8.
Address Register name R/W Default Setting/data Function
FF01H D3 0 (*3) R – (*2) – Unused
D2 0 (*3) R – (*2) – Unused
D1 WDEN R/W 1 1 Enable 0 Disable Watchdog timer enable
D0 WDRST (*3) W (Reset) 1 Reset 0 Invalid Watchdog timer reset (writing)
*1: Initial value at initial reset *2: Not set in the circuit *3: Constantly "0" when being read
WDRST: Watchdog timer reset (FF01H•D0)
Resets the watchdog timer.
When "1" is written: Watchdog timer is reset
When "0" is written: No operation
Reading: Always "0"
When "1" is written to WDRST, the watchdog timer is reset and restarts immediately after that. When "0" is writ-
ten, no operation results. This bit is dedicated for writing, and is always "0" for reading.
8 WATCHDOG TIMER
8-2 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
WDEN: Watchdog timer enable register (FF01H•D1)
Selects whether the watchdog timer is used (enabled) or not (disabled).
When "1" is written: Enabled
When "0" is written: Disabled
Reading: Valid
When "1" is written to the WDEN register, the watchdog timer starts count operation. When "0" is written, the
watchdog timer does not count and does not generate the interrupt (NMI). At initial reset, this register is set to
"1."
Precautions8.4
• When the watchdog timer is being used, the software must reset it within 3-second cycles.
• Because the watchdog timer is set in operation state by initial reset, set the watchdog timer to disabled state (not
used) before generating an interrupt (NMI) if it is not used.
9 CLOCK TIMER
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 9-1
(Rev. 1.1)
Clock Timer 9
Configuration of Clock Timer9.1
The S1C6F016 has a built-in clock timer that uses OSC1 (crystal oscillator) as the source oscillator. The clock timer
consists of an 8-bit binary counter that counts an fOSC1 dividing clock. Timer data (128–16 Hz and 8–1 Hz) can be
read out by software. Figure 9.1.1 is the block diagram for the clock timer.
128 Hz–16 Hz
Data bus
128 Hz, 64 Hz, 32 Hz, 16 Hz,
8 Hz, 4 Hz, 2 Hz, 1 Hz
fOSC1/128
Clock timer reset signal
Clock
manager
Interrupt
request
Interrupt
control
8 Hz–1 Hz
Clock enable signal
Clock timer RUN/STOP signal
Clock timer
OSC1
oscillation circuit
(fOSC1)
1.1 Block diagram for the clock timerFigure 9.
Ordinarily, this clock timer is used for all types of timing functions such as clocks.
Controlling Operating Clock9.2
The clock manager generates the clock timer operating clock by dividing the OSC1 clock by 128. Before the clock
timer can be run, write "1" to the RTCKE register to supply the operating clock to the clock timer.
2.1 Controlling clock timer operating clockTable 9.
RTCKE Clock timer operating clock
1 fOSC1 / 128 (256 Hz)
0 Off
If it is not necessary to run the clock timer, stop the clock supply by setting RTCKE to "0" to reduce current con-
sumption.
Data Read and Hold Function9.3
The 8 bits timer data are allocated to the address FF41H and FF42H.
<FF41H> D0: TM0 = 128 Hz D1: TM1 = 64 Hz D2: TM2 = 32 Hz D3: TM3 = 16 Hz
<FF42H> D0: TM4 = 8 Hz D1: TM5 = 4 Hz D2: TM6 = 2 Hz D3: TM7 = 1 Hz
Since two addresses are allocated for the clock timer data, a carry is generated from the low-order data (TM[3:0]:
128–16 Hz) to the high-order data (TM[7:4]: 8–1 Hz) during counting. If this carry is generated between readings
of the low-order data and the high-order data, the combined data does not represent the correct value (if a carry oc-
curs after the low-order data is read as FFH, the incremented (+1) value is read as the high-order data). To avoid this
problem, the clock timer is designed to latch the high-order data at the time the low-order data is read. The latched
high-order data will be maintained until the next reading of the low-order data.
Note: The latched value, not the current value, is always read as the high-order data. Therefore, be sure
to read the low-order data first.
9 CLOCK TIMER
9-2 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
Interrupt Function9.4
The clock timer can generate an interrupt at the falling edge of 128 Hz, 64 Hz, 32 Hz, 16 Hz, 8 Hz, 4 Hz, 2 Hz and 1
Hz signals. Software can enable or mask any of these frequencies to generate interrupts.
Figure 9.4.1 is the timing chart of the clock timer.
Address
FF41H
FF42H
128 Hz interrupt request
64 Hz interrupt request
32 Hz interrupt request
16 Hz interrupt request
8 Hz interrupt request
4 Hz interrupt request
2 Hz interrupt request
1 Hz interrupt request
Bit
D0
D1
D2
D3
D0
D1
D2
D3
Frequency Clock timer timing chart
128 Hz
64 Hz
32 Hz
16 Hz
8 Hz
4 Hz
2 Hz
1 Hz
4.1 Timing chart of clock timerFigure 9.
As shown in Figure 9.2, an interrupt is generated at the falling edge of each frequency signal (128 Hz, 64 Hz, 32 Hz,
16 Hz, 8 Hz, 4 Hz, 2 Hz, 1 Hz). At this time, the corresponding interrupt factor flag (IT0, IT1, IT2, IT3, IT4, IT5,
IT6, IT7) is set to "1." The interrupt mask registers (EIT0, EIT1, EIT2, EIT3, EIT4, EIT5, EIT6, EIT7) are used to
enable or mask each interrupt factor. However, regardless of the interrupt mask register setting, the interrupt factor
flag is set to "1" at the falling edge of the corresponding signal.
I/O Memory of Clock Timer9.5
Table 9.5.1 shows the I/O addresses and the control bits for the clock timer.
5.1 Control bits of clock timerTable 9.
Address Register name R/W Default Setting/data Function
FF16H D3 MDCKE R/W 0 1 Enable 0 Disable Integer multiplier clock enable
D2 SGCKE R/W 0 1 Enable 0 Disable Sound generator clock enable
D1 SWCKE R/W 0 1 Enable 0 Disable Stopwatch timer clock enable
D0 RTCKE R/W 0 1 Enable 0 Disable Clock timer clock enable
FF40H D3 0 (*3) R – (*2) – Unused
D2 0 (*3) R – (*2) – Unused
D1 TMRST (*3) W (Reset) 1 Reset 0 Invalid Clock timer reset (writing)
D0 TMRUN R/W 0 1 Run 0 Stop Clock timer Run/Stop
9 CLOCK TIMER
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 9-3
(Rev. 1.1)
Address Register name R/W Default Setting/data Function
FF41H D3 TM3 R 0
0H–FH
Clock timer data (16 Hz)
D2 TM2 R 0 Clock timer data (32 Hz)
D1 TM1 R 0 Clock timer data (64 Hz)
D0 TM0 R 0 Clock timer data (128 Hz)
FF42H D3 TM7 R 0
0H–FH
Clock timer data (1 Hz)
D2 TM6 R 0 Clock timer data (2 Hz)
D1 TM5 R 0 Clock timer data (4 Hz)
D0 TM4 R 0 Clock timer data (8 Hz)
*1: Initial value at initial reset *2: Not set in the circuit *3: Constantly "0" when being read
RTCKE: Clock timer clock enable register (FF16H•D0)
Controls the operating clock supply to the clock timer.
When "1" is written: On
When "0" is written: Off
Reading: Valid
When "1" is written to RTCKE, the clock timer operating clock is supplied from the clock manager. If it is not
necessary to run the clock timer, stop the clock supply by setting RTCKE to "0" to reduce current consumption.
At initial reset, this register is set to "0."
TMRUN: Clock timer Run/Stop control register (FF40H•D0)
Controls run/stop of the clock timer.
When "1" is written: Run
When "0" is written: Stop
Reading: Valid
The clock timer starts running when "1" is written to the TMRUN register, and stops when "0" is written. In stop
status, the timer data is maintained until the next run status or the timer is reset. Also, when stop status changes
to run status, the data that is maintained can be used for resuming the count. At initial reset, this register is set to
"0."
TMRST: Clock timer reset (FF40H•D1)
This bit resets the clock timer.
When "1" is written: Clock timer reset
When "0" is written: No operation
Reading: Always "0"
The clock timer is reset by writing "1" to TMRST. The clock timer must be reset when it is stopped (TMRUN =
"0"). No operation results when "0" is written to TMRST. This bit is write-only, and so is always "0" at reading.
TM[7:0]: Timer data (FF42H, FF41H)
The 128–1 Hz timer data of the clock timer can be read out with these registers. These eight bits are read only, and
writing operations are invalid. By reading the low-order data (FF41H), the high-order data (FF42H) is latched.
The latched value, not the current value, is always read as the high-order data. Therefore, be sure to read the low-
order data first. At initial reset, the timer data is initialized to "00H."
9 CLOCK TIMER
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(Rev. 1.1)
Precautions9.6
• Be sure to read timer data in the order of low-order data (TM[3:0]) then high-order data (TM[7:4]).
• The clock timer count clock does not synch with the CPU clock. Therefore, the correct value may not be obtained
depending on the count data read and count-up timings. To avoid this problem, the clock timer count data should
be read by one of the procedures shown below.
- Read the count data twice and verify if there is any difference between them.
- Temporarily stop the clock timer when the counter data is read to obtain proper data.
• When resetting the clock timer (TMRST = "1"), do not start the clock timer (TMRUN = "1") simultaneously. If
both control bits are set to "1", the clock timer may not reset properly.
10 STOPWATCH TIMER
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 10-1
(Rev. 1.1)
Stopwatch Timer10
Configuration of Stopwatch Timer10.1
The S1C6F016 has a 1/1,000 sec stopwatch timer. The stopwatch timer is configured of a 3-stage, 4-bit BCD counter
serving as the input clock of a 1,000 Hz signal output from the prescaler. Data can be read out four bits (1/1,000 sec,
1/100 sec and 1/10 sec) at a time by software. In addition it has a direct input function that controls the stopwatch
timer RUN/STOP and LAP using the input ports P00 and P01. Figure 10.1.1 is the block diagram of the stopwatch
timer.
Clock
manager
SWCKE
fOSC1/32
OSC1
oscillation
circuit
(fOSC1)
Data bus
1 Hz interrupt request
1,000 / 1,024
prescaler
1/1,000 sec
counter
1/100 sec
counter
1/10 sec
counter
Capture buffer
SWD[3:0]
reading
SWD[7:4]
reading
SWD[11:8]
reading
SWRST
10 Hz interrupt request
Capture
control
circuit
SWRUN
EDIR
CRNWF
DKM[2:0]
LCURF Direct RUN interrupt request
Direct LAP interrupt request
(1,000 Hz)
Direct
input
control
SWDIR
P01
P00
P02, P03,
P10–P13
1.1 Block diagram of stopwatch timerFigure 10.
The stopwatch timer can be used as a separate timer from the clock timer. In particular, digital watch stopwatch func-
tions can be realized easily with software.
Controlling Operating Clock10.2
The clock manager generates the stopwatch timer operating clock by dividing the OSC1 clock by 32. Before the
stopwatch timer can be run, write "1" to the SWCKE register to supply the operating clock to the stopwatch timer.
2.1 Controlling stopwatch timer operating clockTable 10.
SWCKE Stopwatch timer clock
1 fOSC1 / 32 (1 kHz)
0 Off
If it is not necessary to run the stopwatch timer, stop the clock supply by setting SWCKE to "0" to reduce current
consumption.
Counter and Prescaler10.3
The stopwatch timer is configured of four-bit BCD counters SWD[3:0], SWD[7:4] and SWD[11:8].
The counter SWD[3:0], at the stage preceding the stopwatch timer, has a 1,000 Hz signal generated by
the prescaler for the input clock. It counts up every 1/1,000 sec, and generates 100 Hz signal. The coun-
ter SWD[7:4] has a 100 Hz signal generated by the counter SWD[3:0] for the input clock. It count-up every
1/100 sec, and generated 10 Hz signal. The counter SWD[11:8] has an approximated 10 Hz signal generated by the
counter SWD[7:4] for the input clock. It count-up every 1/10 sec, and generated 1 Hz signal.
The prescaler inputs a 1,024 Hz clock dividing fOSC1 (output from the OSC1 oscillation circuit), and outputs 1,000
Hz counting clock for SWD[3:0]. To generate a 1,000 Hz clock from 1,024 Hz, 24 pulses from 1,024 pulses that are
input to the prescaler every second are taken out.
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When the counter becomes the value indicated below, one pulse (1,024 Hz) that is input immediately after to the
prescaler will be pulled out.
<Counter value (msec) in which the pulse correction is performed>
39, 79, 139, 179, 219, 259, 299, 319, 359, 399, 439, 479, 539, 579, 619, 659, 699, 719, 759, 799, 839, 879, 939,
979
Figure 10.3.1 shows the operation of the prescaler.
Prescaler input clock (1,024 Hz)
Prescaler output clock
Counter data
START
000 001 002 037 038 039 040 041
3.1 Timing of the prescaler operationFigure 10.
For the above reason, the counting clock is 1,024 Hz (0.9765625 msec) except during pulse correction. Conse-
quently, frequency of the prescaler output clock (1,000 Hz), 100 Hz generated by SWD[3:0] and 10 Hz generated by
SWD[7:4] are approximate values.
Capture Buffer and Hold Function10.4
The stopwatch timer data, 1/1,000 sec, 1/100 sec and 1/10 sec, can be read from SWD[3:0] (FF4BH), SWD[7:4]
(FF4CH) and SWD[11:8] (FF4DH), respectively. The counter data are latched in the capture buffer when reading,
and are held until reading of three words is completed. For this reason, correct data can be read even when a carry
from lower digits occurs during reading the three words. Further, three counter data are latched in the capture buffer
at the same time when SWD[3:0] (1/1,000 sec) is read. The data hold is released when SWD[11:8] (1/10 sec) read-
ing is completed. Therefore, data should be read in order of SWD[3:0] → SWD[7:4] → SWD[11:8]. If SWD[7:4]
or SWD[11:8] is first read when data have not been held, the hold function does not work and data in the counter
is directly read out. When data that has not been held is read in the stopwatch timer RUN status, you cannot judge
whether it is correct or not.
The stopwatch timer has a LAP function using an external key input (explained later). The capture buffer is also used
to hold LAP data. In this case, data is held until SWD[11:8] is read. However, when a LAP input is performed before
completing the reading, the content of the capture buffer is renewed at that point. Remaining data that have not been
read become invalid by the renewal, and the hold status is not released if SWD[11:8] is read. When SWD[11:8] is
read after the capture buffer is updated, the capture renewal flag CRNWF is set to "1" at that point. In this case, it is
necessary to read from SWD[3:0] again. The capture renewal flag is renewed by reading SWD[11:8].
Figure 10.4.1 shows the timing for data holding and reading.
Direct LAP input (P01/P00)
Direct LAP internal signal
Capture renewal flag CRNWF
SWD[3:0] reading
SWD[7:4] reading
SWD[11:8] reading
Data holding
4.1 Timing for data holding and readingFigure 10.
10 STOPWATCH TIMER
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 10-3
(Rev. 1.1)
Stopwatch Timer RUN/STOP and Reset10.5
RUN/STOP control and reset of the stopwatch timer can be done by software.
Stopwatch timer RUN/STOP
The stopwatch timer enters the RUN status when "1" is written to SWRUN, and the STOP status when "0" is
written. In the STOP status, the timer data is maintained until the next RUN status or resets timer. Also, when the
STOP status changes to the RUN status, the data that was maintained can be used for resuming the count. The
RUN/STOP operation of the stopwatch timer by writing to the SWRUN register is performed in synchronization
with the falling edge of the 1,024 Hz same as the prescaler input clock. The SWRUN register can be read, and in
this case it indicates the operating status of the stopwatch timer.
Figure 10.5.1 shows the operating timing when controlling the SWRUN register.
fOSC1/32 (1,024 Hz)
SWRUN writing
SWRUN register
Count clock
5.1 Operating timing when controlling SWRUNFigure 10.
When the direct input function (explained in next section) is set, RUN/STOP control is done by an external key in-
put. In this case, SWRUN becomes read only register that indicates the operating status of the stopwatch timer.
Stopwatch timer reset
The stopwatch timer is reset when "1" is written to SWRST. With this, the counter value is cleared to "000." Since
this resetting does not affect the capture buffer, data that has been held in the capture buffer is not cleared and is
maintained as is. When the stopwatch timer is reset in the RUN status, counting restarts from count "000." Also,
in the STOP status the reset data "000" is maintained until the next RUN.
Direct Input Function and Key Mask10.6
The stopwatch timer has a direct input function that can control the RUN/STOP and LAP operation of the stopwatch
timer by external key input. This function is set by writing "1" to the EDIR register. When EDIR is set to "0," only
the software control is possible as explained in the previous section.
Input port configuration
In the direct input function, the input ports P00 and P01 are used as the RUN/STOP and LAP input ports. The key
assignment can be selected using the SWDIR register.
6.1 RUN/STOP and LAP input portsTable 10.
SWDIR P00 P01
0 RUN/STOP LAP
1 LAP RUN/STOP
Direct RUN
When the direct input function is selected, RUN/STOP operation of the stopwatch timer can be controlled by
using the key connected to the input port P00/P01 (selected by SWDIR). P00/P01 works as a normal input port,
but the input signal is sent to the stopwatch control circuit. The key input signal from the P00/P01 port works as a
toggle switch. When it is input in STOP status, the stopwatch timer runs, and in RUN status, the stopwatch timer
stops. RUN/STOP status of the stopwatch timer can be checked by reading the SWRUN register. An interrupt is
generated by direct RUN input.
The sampling for key input signal is performed at the falling edge of 1,024 Hz signal same as the SWRUN control.
The chattering judgment is performed at the point where the key turns off, and a chattering less than 46.8–62.5
msec is removed. Therefore, more time is needed for an interval between RUN and STOP key inputs.
Figure 10.6.1 shows the operating timing for the direct RUN input.
10 STOPWATCH TIMER
10-4 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
fOSC1/32 (1,024 Hz)
Direct RUN input (P00/P01)
Direct RUN internal signal
SWRUN register
Count clock
Direct RUN interrupt
6.1 Operating timing for direct RUN inputFigure 10.
Direct LAP
Control for the LAP can also be done by key input same as the direct RUN. When the direct input function is
selected, the input port P01/P00 (selected by SWDIR) becomes the LAP key input port. Sampling for the input
signal and the chattering judgment are the same as a direct RUN.
By entering the LAP key, the counter data at that point is latched into the capture buffer and is held. The counter
continues counting operation. Furthermore, an interrupt occurs by direct LAP input.
As stated above, the capture buffer data is held until SWD[11:8] is read. If the LAP key is input when data has
been already held, it renews the content of the capture buffer. When SWD[11:8] is read after renewing, the capture
renewal flag is set to "1." In this case, the hold status is not released by reading SWD[11:8], and it continues.
Normally the LAP data should be read after the interrupt is generated. After that, be sure to check the capture
renewal flag. When the capture renewal flag is set, renewed data is held in the capture buffer. So it is necessary
to read from SWD[3:0] again.
The stopwatch timer sets the 1 Hz interrupt factor flag ISW1 to "1" when requiring a carry-up to 1-sec digit by an
SWD[11:8] overflow. If the capture buffer shifts into hold status (when SWD[3:0] is read or when LAP is input)
while the 1 Hz interrupt factor flag ISW1 is set to "1," the lap data carry-up request flag LCURF is set to "1" to
indicate that a carry-up to 1-sec digit is required for the processing of LAP input. In normal software processing,
LAP processing may take precedence over 1-sec or higher digits processing by a 1 Hz interrupt, therefore carry-
up processing using this flag should be used for time display in the LAP processing to prevent the 1-sec digit data
decreasing by 1 second. This flag is renewed when the capture buffer shifts into hold status.
Figure 10.6.2 shows the operating timing for the direct LAP input, and Figure 10.6.3 shows the timings for data
holding and reading during a direct LAP input and reading.
fOSC1/32 (1,024 Hz)
Direct LAP input (P01/P00)
Direct LAP internal signal
Data holding
Direct LAP interrupt
SWD[11:8] reading
6.2 Operating timing for direct LAP inputFigure 10.
Direct LAP input (P01/P00)
Capture renewal flag CRNWF
SWD[3:0] reading
SWD[7:4] reading
SWD[11:8] reading
Data holding
1 Hz interrupt factor flag ISW1
Lap data carry-up request flag LCURF
Counter data 999 000
6.3 Timing for data holding and reading during direct LAP inputFigure 10.
10 STOPWATCH TIMER
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 10-5
(Rev. 1.1)
Key mask
In stopwatch applications, some functions may be controlled by a combination of keys including direct RUN or
direct LAP. For instance, the RUN key can be used for other functions, such as reset and setting a watch, by press-
ing the RUN key with another key. In this case, the direct RUN function or direct LAP function must be invalid
so that it does not function. For this purpose, the key mask function is set so that it judges concurrence of input
keys and invalidates RUN and LAP functions. A combination of the key inputs for this judgment can be selected
using the DKM[2:0] register.
6.2 Key mask selectionTable 10.
DKM[2:0] Mask key combination
0H None (at initial reset)
1H P02
2H P02, P03
3H P02, P03, P10
4H P10
5H P10, P11
6H P10, P11, P12
7H P10, P11, P12, P13
RUN or LAP inputs become invalid in the following status.
1. The RUN or LAP key is pressed when one or more keys that are included in the selected combination (here
in after referred to as mask) are held down.
2. The RUN or LAP key has been pressed when the mask is released.
fOSC1/32 (1,024 Hz)
Direct RUN/LAP input
Key mask
valid invalid
invalid invalid
6.4 Operation of key maskFigure 10.
RUN or LAP inputs become valid in the following status.
1. Either the RUN or LAP key is pressed independently if no other key is been held down.
2. Both the RUN and LAP keys are pressed at the same time if no other key is held down. (RUN and LAP
functions are effective.)
3. The RUN or LAP key is pressed if either is held down. (RUN and LAP functions are effective.)
4. Either the RUN or LAP key and the mask key are pressed at the same time if no other key is held down.
5. Both the RUN and LAP keys and the mask key are pressed at the same time if no other key is held down. (RUN
and LAP functions are effective.)
* Simultaneous key input is referred to as two or more key inputs are sampled at the same falling edge of 1,024
Hz clock.
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Interrupt Function10.7
10 Hz and 1 Hz interrupts
The 10 Hz and 1 Hz interrupts can be generated through the overflow of stopwatch timers SWD[7:4] and
SWD[11:8] respectively. Also, software can set whether to separately mask the frequencies described earlier.
Figure 10.7.1 is the timing chart for the counters.
10 Hz interrupt request
1 Hz interrupt request
FF4DH
(1/10 sec BCD)
FF4CH
(1/100 sec BCD)
D0
D1
D2
D3
D0
D1
D2
D3
Address Register Stopwatch timer (SWD[3:0]) timing chart
FF4BH
(1/1,000 sec BCD)
D0
D1
D2
D3
Address Register Stopwatch timer (SWD[7:4]) timing chart
Address Register Stopwatch timer (SWD[11:8]) timing chart
7.1 Timing chart for countersFigure 10.
As shown in Figure 10.7.1, the interrupts are generated by the overflow of their respective counters ("9" chang-
ing to "0"). Also, at this time the corresponding interrupt factor flag (ISW10, ISW1) is set to "1."
The respective interrupts can be masked separately through the interrupt mask registers (EISW10, EISW1).
However, regardless of the setting of the interrupt mask registers, the interrupt factor flags are set to "1" by the
overflow of their corresponding counters.
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S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 10-7
(Rev. 1.1)
Direct RUN and direct LAP interrupts
When the direct input function is selected, the direct RUN and direct LAP interrupts can be generated. The re-
spective interrupts occur at the rising edge of the internal signal for direct RUN and direct LAP after sampling
the direct input signal in the falling edge of 1,024 Hz signal. Also, at this time the corresponding interrupt factor
flag (IRUN, ILAP) is set to "1."
The respective interrupts can be masked separately through the interrupt mask registers (EIRUN, EILAP). How-
ever, regardless of the setting of the interrupt mask registers, the interrupt factor flags are set to "1" by the inputs
of the RUN and LAP.
The direct RUN and LAP functions use the P00 and P01 ports. Therefore, the direct input interrupt and the P00–
P03 inputs interrupt may generate at the same time depending on the interrupt condition setting for the input port
P00–P03. Consequently, when using the direct input interrupt, set the interrupt select registers SIP00 and SIP01
to "0" so that the input interrupt does not generate by P00 and P01 inputs.
fOSC1/32 (1,024 Hz)
SWRST writing
EDIR writing
EDIR register
Direct RUN input
SWRUN writing
SWRUN register
Direct LAP input
Counter data
Capture buffer
SWD[3:0] reading
SWD[7:4] reading
SWD[11:8] reading
CRNWF
1 Hz interrupt factor flag ISW1
LCURF
Direct RUN interrupt
Direct LAP interrupt
10 Hz interrupt
1 Hz interrupt
001 002 003 004 005 006 098 099 100 101 102 000 001 002 003 004 005 006 007 993 994000 995 996 997 998 999 000 001 002 003 004 005 006 007
003 005 995 001 006
7.2 Timing chart for stopwatch timerFigure 10.
I/O Memory of Stopwatch Timer10.8
Table 10.8.1 shows the I/O addresses and the control bits for the stopwatch timer.
8.1 Control bits of stopwatch timerTable 10.
Address Register name R/W Default Setting/data Function
FF16H D3 MDCKE R/W 0 1 Enable 0 Disable Integer multiplier clock enable
D2 SGCKE R/W 0 1 Enable 0 Disable Sound generator clock enable
D1 SWCKE R/W 0 1 Enable 0 Disable Stopwatch timer clock enable
D0 RTCKE R/W 0 1 Enable 0 Disable Clock timer clock enable
FF48H D3 0 (*3) R – (*2) – Unused
D2 0 (*3) R – (*2) – Unused
D1 SWDIR R/W 0 1 P00 = Lap
P01 = Run/Stop
0 P00 = Run/Stop
P01 = Lap
Stopwatch direct input switch
D0 EDIR R/W 0 1 Enable 0 Disable Direct input enable
FF49H D3 0 (*3) R – (*2) – Unused
D2 DKM2 R/W 0 7 P10–13 4 P10 1 P02 Key mask selection
D1 DKM1 R/W 0 6 P10–12 3
P02–03,10
0 No mask
D0 DKM0 R/W 0 5 P10–11 2 P02–03
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10-8 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
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Address Register name R/W Default Setting/data Function
FF4AH D3 LCURF R 0 1 Request 0 No Lap data carry-up request flag
D2 CRNWF R 0 1 Renewal 0 No Capture renewal flag
D1 SWRUN R/W 0 1 Run 0 Stop Stopwatch timer Run/Stop
D0 SWRST (*3) W (Reset) 1 Reset 0 Invalid Stopwatch timer reset (writing)
FF4BH D3 SWD3 R 0
0–9
Stopwatch timer data
BCD (1/1000 sec)
D2 SWD2 R 0
D1 SWD1 R 0
D0 SWD0 R 0
FF4CH D3 SWD7 R 0
0–9
Stopwatch timer data
BCD (1/100 sec)
D2 SWD6 R 0
D1 SWD5 R 0
D0 SWD4 R 0
FF4DH D3 SWD11 R 0
0–9
Stopwatch timer data
BCD (1/10 sec)
D2 SWD10 R 0
D1 SWD9 R 0
D0 SWD8 R 0
*1: Initial value at initial reset *2: Not set in the circuit *3: Constantly "0" when being read
SWCKE: Stopwatch timer clock enable register (FF16H•D1)
Controls the operating clock supply to the stopwatch timer.
When "1" is written: On
When "0" is written: Off
Reading: Valid
When "1" is written to SWCKE, the stopwatch timer operating clock is supplied from the clock manager. If it
is not necessary to run the stopwatch timer, stop the clock supply by setting SWCKE to "0" to reduce current
consumption. At initial reset, this register is set to "0."
EDIR: Direct input function enable register (FF48H•D0)
Enables the direct input (RUN/LAP) function.
When "1" is written: Enabled
When "0" is written: Disabled
Reading: Valid
The direct input function is enabled by writing "1" to EDIR, and then RUN/STOP and LAP control can be done by
external key input. When "0" is written, the direct input function is disabled, and the stopwatch timer is controlled
by the software only. Further the function switching is actually done by synchronizing with the falling edge of
fOSC1/32 (1,024 Hz) after the data is written to this register (after 977 µsec maximum). At initial reset, this register
is set to "0."
SWDIR: Direct input switch register (FF48H•D1)
Switches the direct-input key assignment for the P00 and P01 ports.
When "1" is written: P00 = LAP, P01 = RUN/STOP
When "0" is written: P00 = RUN/STOP, P01 = LAP
Reading: Valid
The direct-input key assignment is selected using this register. The P00 and P01 port statuses are input to the
stopwatch timer as the RUN/STOP and LAP inputs according to this selection. At initial reset, this register is set
to "0."
DKM[2:0]: Direct key mask select register (FF49H•D[2:0])
Selects a combination of the key inputs for concurrence judgment with RUN and LAP inputs when the direct
input function is set.
10 STOPWATCH TIMER
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 10-9
(Rev. 1.1)
8.2 Key mask selectionTable 10.
DKM[2:0] Mask key combination
0H None (at initial reset)
1H P02
2H P02, P03
3H P02, P03, P10
4H P10
5H P10, P11
6H P10, P11, P12
7H P10, P11, P12, P13
When the concurrence is detected, RUN and LAP inputs cannot be accepted until the concurrence is released.
At initial reset, this register is set to "0."
SWRST: Stopwatch timer reset (FF4AH•D0)
This bit resets the stopwatch timer.
When "1" is written: Stopwatch timer reset
When "0" is written: No operation
Reading: Always "0"
The stopwatch timer is reset when "1" is written to SWRST. When the stopwatch timer is reset in the RUN status,
operation restarts immediately. Also, in the STOP status the reset data is maintained. Since this reset does not
affect the capture buffer, the capture buffer data in hold status is not cleared and is maintained. This bit is write-
only, and is always "0" at reading.
SWRUN: Stopwatch timer RUN/STOP (FF4AH•D1)
This register controls the RUN/STOP of the stopwatch timer, and the operating status can be monitored by read-
ing this register.
When writing data
When "1" is written: RUN
When "0" is written: STOP
The stopwatch timer enters the RUN status when "1" is written to SWRUN, and the STOP status when "0" is
written. In the STOP status, the timer data is maintained until the next RUN status or resets timer. Also, when the
STOP status changes to the RUN status, the data that was maintained can be used for resuming the count. RUN/
STOP control with this register is valid only when the direct input function is set to disable. When the direct input
function is set, it becomes invalid.
When reading data
When "1" is read: RUN
When "0" is read: STOP
Reading is always valid regardless of the direct input function setting. "1" is read when the stopwatch timer is in
the RUN status, and "0" is read in the STOP status.
At initial reset, this register is set to "0."
CRNWF: Capture renewal flag (FF4AH•D2)
This flag indicates that the content of the capture buffer has been renewed.
When "1" is read: Renewed
When "0" is read: Not renewed
Writing: Invalid
The content of the capture buffer is renewed if the LAP key is input when the data held into the capture buffer
has not yet been read. Reading SWD[11:8] in that status sets this flag to "1," and the hold status is maintained.
Consequently, when data that is held by a LAP input is read, read this flag after reading the SWD[11:8] and check
whether the data has been renewed or not. This flag is renewed when SWD[11:8] is read. At initial reset, this flag
is set to "0."
10 STOPWATCH TIMER
10-10 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
LCURF: Lap data carry-up request flag (FF4AH•D3)
This flag indicates a carry that has been generated to 1 sec-digit when the data is held. Note that this flag is invalid
when the direct input function is disabled.
When "1" is read: Carry is required
When "0" is read: Carry is not required
Writing: Invalid
If the capture buffer shifts into hold status while the 1 Hz interrupt factor flag ISW1 is set to "1," LCURF is set
to "1" to indicate that a carry-up to 1-sec digit is required. When performing a processing such as a LAP input
preceding with 1 Hz interrupt processing, read this flag before processing and check whether carry-up is needed
or not. This flag is renewed (set/reset) every time the capture buffer shifts into hold status. At initial reset, this
flag is set to "0."
SWD[3:0]: Stopwatch timer data 1/1,000 sec (FF4BH)
Data (BCD) of the 1/1,000 sec column of the capture buffer can be read out. The hold function of the capture
buffer works by reading this data. These 4 bits are read-only, and cannot be used for writing operations. At initial
reset, the timer data is set to "0."
SWD[7:4]: Stopwatch timer data 1/100 sec (FF4CH)
Data (BCD) of the 1/100 sec column of the capture buffer can be read out. These 4 bits are read-only, and cannot
be used for writing operations. At initial reset, the timer data is set to "0."
SWD[11:8]: Stopwatch timer data 1/10 sec (FF4DH)
Data (BCD) of the 1/10 sec column of the capture buffer can be read out. These 4 bits are read-only, and cannot
be used for writing operations. At initial reset, the timer data is set to "0."
Note: Be sure to data reading in the order of SWD[3:0] → SWD[7:4] → SWD[11:8].
Precautions10.9
• The interrupt factor flag should be reset after resetting the stopwatch timer.
• Be sure to data reading in the order of SWD[3:0] → SWD[7:4] → SWD[11:8].
• When data that is held by a LAP input is read, read the capture buffer renewal flag CRNWF after reading the
SWD[11:8] and check whether the data has been renewed or not.
• When performing a processing such as a LAP input preceding with 1 Hz interrupt processing, read the LAP data
carry-up request flag LCURF before processing and check whether carry-up is needed or not.
11 PROGRAMMABLE TIMER
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 11-1
(Rev. 1.1)
Programmable Timer11
Configuration of Programmable Timer11.1
The S1C6F016 has built-in two (Ch.A and Ch.B) units of 8 bits × 2-channel programmable timers. Each unit may be
configured to 8-bit timer × 2 channels or 16-bit timer × 1 channel with software.
Ch.A: Timer 0 and Timer 1 (8 bits × 2 channels) or Timer 0 + 1 (16 bits × 1 channel)
Ch.B: Timer 2 and Timer 3 (8 bits × 2 channels) or Timer 2 + 3 (16 bits × 1 channel)
Figures 11.1.1 and 11.1.2 show the configuration of the programmable timers.
Each timer has an 8-bit down counter and an 8-bit reload data register. The down counter counts the internal clock of
which the frequency can be selected with software. Furthermore, Timers 0 and 2 also have an event counter function
to count the clock input from the EVIN_A (P10) and EVIN_B (P22) terminals. When the down counter underflows
during counting with the specified clock, the timer outputs the underflow and interrupt signals and resets the counter
to its initial value. The reload data register is used to set the initial value.
The underflow signal of Timer 1 is used as the source clock of the R/F converter and serial interface, this makes it
possible to program a flexible R/F converter count clock and the transfer rate of the serial interface.
Each timer has an 8-bit compare data register in addition to the above registers. This register is used to store data
to be compared with the contents of the down counter. When the timer is set to PWM mode, the timer outputs the
compare match signal if the contents between the down counter and the compare data register are matched, and an
interrupt occurs at the same time. Also the compare match signal is used with the underflow signal to generate a
PWM waveform.
The signal generated by the programmable timer can be output from the TOUT_A (P11) or TOUT_B (P23) port
terminal.
Timer 0
Timer 0 clock selection
Underflow signal
Compare match signal
Interrupt
request
Timer 0 reset
Timer 0
clock
Timer 1
clock
PWM output selection
R/F converter
Serial interface
EVIN_A
(P10)
PTSEL0
PTRST0
Data bus
Timer 0
Run/Stop
PTRUN0
PTPS0[3:0]
Timer function setting
f
OSC1
/16 (2,048 Hz)f
OSC1
FCSEL_A
Timer 1 clock selection
PTPS1[3:0]
f
OSC3
Pulse polarity setting
PLPUL_A
Output control
PTOUT_A
Output selection
CHSEL_A
Event counter
mode setting
EVCNT_A
Reload data register
RLD0[7:0]
Compare data register
CD0[7:0]
8-bit down counter
Timer
control
circuit
PWM waveform
generator
P10 port
TOUT_A
(P11)
P11 port
Clock
manager
Interrupt
control
circuit
Selector
Data buffer
PTD0[7:0]
Comparator
Timer 1
Underflow signal
Compare match signal
Timer 1 reset
PWM output selection
PTSEL1
PTRST1
Timer 1
Run/Stop
PTRUN1
1/2
1/2
16-bit mode
selection
MOD16_A
Reload data register
RLD1[7:0]
Compare data register
CD1[7:0]
8-bit down counter
Timer
control
circuit
PWM waveform
generator
Data buffer
PTD1[7:0]
Comparator
1.1 Configuration of programmable timer Ch.A (Timers 0 and 1)Figure 11.
11 PROGRAMMABLE TIMER
11-2 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
Timer 2
Timer 2 clock selection
Underflow signal
Compare match signal
Interrupt
request
Timer 2 reset
Timer 2
clock
Timer 3
clock
PWM output selection
PTSEL2
PTRST2
Data bus
Timer 2
Run/Stop
PTRUN2
PTPS2[3:0]
Timer function setting
f
OSC1
/16 (2,048 Hz)f
OSC1
FCSEL_B
Timer 3 clock selection
PTPS3[3:0]
f
OSC3
Pulse polarity setting
PLPUL_B
Output control
PTOUT_B
Output selection
CHSEL_B
Event counter
mode setting
EVCNT_B
Reload data register
RLD2[7:0]
Compare data register
CD2[7:0]
8-bit down counter
Timer
control
circuit
PWM waveform
generator
P22 port
TOUT_B
(P23)
P23 port
Clock
manager
Interrupt
control
circuit
Selector
Data buffer
PTD2[7:0]
Comparator
Timer 3
Underflow signal
Compare match signal
Timer 3 reset
PWM output selection
PTSEL3
PTRST3
Timer 3
Run/Stop
PTRUN3
1/2
1/2
16-bit mode
selection
MOD16_B
Reload data register
RLD3[7:0]
Compare data register
CD3[7:0]
8-bit down counter
Timer
control
circuit
PWM waveform
generator
Data buffer
PTD3[7:0]
Comparator
EVIN_B
(P22)
1.2 Configuration of programmable timer Ch.B (Timers 2 and 3)Figure 11.
Notes: • All timer units (Ch.A and Ch.B) have the same functions and structure except the register
names, I/O ports used and their signal names. To simplify the explanations, the subsequent
sections are described using Ch.A (Timers 0 and 1). The register and signal names have a timer
number (0 to 3) or unit (Ch.) name (A and B). They are described using the names for Ch.A
(Timers 0 and 1) or "x" (= timer number 0 to 3) except when a specific description is required.
Description for Ch.A is applied to Ch.B.
Examples:
Ch.A → Can be replaced with Ch.B.
EVCNT_A register → Can be replaced with EVCNT_B register.
TOUT_A → Can be replaced with TOUT_B.
Descriptions for Timer 0, Timer 1, and Timer x are applied to other timers
Examples:
Timer 0 → Can be replaced with Timer 2.
Timer 1 → Can be replaced with Timer 3.
Timer x → Can be replaced with Timer 0 to Timer 3.
PTRUNx register → Can be replaced with PTRUN0 to PTRUN3 registers
• If the TOUT_A and/or TOUT_B terminals are used to drive an external component that con-
sumes a large amount of current such as a bipolar transistor, design the pattern of traces on
the printed circuit board so that the operation of the external component does not affect the IC
power supply. Refer to "Precautions on Mounting" in Appendix for more information.
Controlling Operating Clock11.2
The clock manager generates the down-count clock for each timer by dividing the OSC1 or OSC3 clock. Table 11.2.1
lists the 15 count clocks that can be generated by the clock manager, and the clock to be used for each timer can be
selected using the count clock frequency select register PTPSx[3:0]. At initial reset, the PTPSx[3:0] register is set to
"0H" and the clock supply from the clock manager to the programmable timer is disabled. Before the timer can be
run, select a clock to enable the clock supply.
11 PROGRAMMABLE TIMER
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 11-3
(Rev. 1.1)
2.1 Selecting count clock frequencyTable 11.
PTPSx[3:0] Timer clock
FH fOSC3
EH fOSC3 / 2
DH fOSC3 / 4
CH fOSC3 / 8
BH fOSC3 / 16
AH fOSC3 / 32
9H fOSC3 / 64
8H fOSC3 / 256
7H fOSC1 (32 kHz)
6H fOSC1 / 2 (16 kHz)
5H fOSC1 / 4 (8 kHz)
4H fOSC1 / 16 (2 kHz)
3H fOSC1 / 32 (1 kHz)
2H fOSC1 / 64 (512 Hz)
1H fOSC1 / 256 (128 Hz)
0H Off
fOSC1: OSC1 oscillation frequency. ( ) indicates the frequency when fOSC1 = 32 kHz.
fOSC3: OSC3 oscillation frequency
Stop the clock supply to the timers shown below by setting PTPSx[3:0] to "0H" to reduce current consumption.
• Unused timer
• Timer used as an event counter that inputs an external clock
• Upper 8-bit timer (Timer 1, Timer 3) when the timer unit is used as a 16-bit × 1 channel configuration.
Basic Counter Operation11.3
This section explains the basic count operation when each timer is used as an individual 8-bit timer.
Each timer has an 8-bit down counter and an 8-bit reload data register.
The reload data register RLDx[7:0] is used to set the initial value to the down counter.
By writing "1" to the timer reset bit PTRSTx, the down counter loads the initial value set in the reload register. There-
fore, down-counting is executed from the stored initial value by the input clock.
The PTRUNx register is provided to control the RUN/STOP for each timer. By writing "1" to this register after pre-
setting the reload data to the down counter, the down counter starts counting down. Writing "0" stops the input count
clock and the down counter stops counting. This control (RUN/STOP) does not affect the counter data. The counter
maintains its data while stopped, and can restart counting continuing from that data.
The counter data can be read via the data buffer PTDx[7:0] in optional timing. However, the counter has the data hold
function the same as the clock timer, that holds the high-order data (PTDx[7:4]) when the low-order data (PTDx[3:0])
is read in order to prevent the borrowing operation between low- and high-order reading, therefore be sure to read
the low-order data first.
The counter reloads the initial value set in the reload data register when an underflow occurs through the count down.
It continues counting down from the initial value after reloading.
In addition to reloading the counter, this underflow signal controls the interrupt generation and pulse (TOUT_A
signal) output. The underflow signal of Timer 1 (Ch.A) is also used to generate the clock to be supplied to the serial
interface and R/F converter.
11 PROGRAMMABLE TIMER
11-4 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
PTRUNx
PTRSTx
RLDx[7:0]
Count clock
PTDx7
PTDx6
PTDx5
PTDx4
PTDx3
PTDx2
PTDx1
PTDx0
A6H F3H
Preset Reload &
underflow interrupt
3.1 Basic operation timing of down counterFigure 11.
Event Counter Mode (Timers 0 and 2)11.4
Timer 0 has an event counter function that counts an external clock input to an I/O port. Table 11.4.1 lists the timers
and their clock input ports.
4.1 Event counter clock input portTable 11.
Timer External clock input terminal Control register
Timer 0 (Ch.A) EVIN_A (P10) EVCNT_A
Timer 2 (Ch.B) EVIN_B (P22) EVCNT_B
This function is selected by writing "1" to the counter mode select register EVCNT_A. This sets the corresponding
I/O port to input mode and enables the port to send the input signal to Timer 0 as the count clock. At initial reset,
EVCNT_A is set to "0" and Timer 0 is configured as a normal timer that counts the internal clock.
In the event counter mode, the clock is supplied to Timer 0 from outside the IC, therefore, the settings of the count
clock frequency select register PTPS0[3:0] becomes invalid.
Count down timing can be selected from either the falling or rising edge of the input clock using the pulse polarity
select register PLPUL_A. When "0" is written to the PLPUL_A register, the falling edge is selected, and when "1" is
written, the rising edge is selected. The count down timing is shown in Figure 11.4.1.
EVIN_A input
Count data n n-1 n-2 n-3 n-4 n-5 n-6
PLPUL_A
EVCNT_A
01
1
PTRUN0
4.1 Timing chart in event counter modeFigure 11.
The event counter mode also allows use of a noise reject function to eliminate noise such as chattering on the external
clock (EVIN_A). This function is selected by writing "1" to the timer function select register FCSEL_A.
When the noise rejector is enabled, an input pulse width for both low and high levels must be 0.98 msec* or more to
count reliably. The noise rejector allows the counter to input the clock at the second falling edge of the internal 2,048
Hz* signal after changing the input level of the EVIN_A input terminal. Consequently, the pulse width of noise that
can reliably be rejected is 0.48 msec* or less.
(*: when fOSC1 = 32.768 kHz)
11 PROGRAMMABLE TIMER
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 11-5
(Rev. 1.1)
Figure 11.4.2 shows the count down timing with noise rejector.
Counter
input clock *2
Count data n n-1 n-2 n-3
EVIN_A input
2,048 Hz *1
*1 When fOSC1 = 32.768 kHz
*2 When PLPUL_A register is set to "0"
4.2 Count down timing with noise rejectorFigure 11.
The operation of the event counter mode is the same as the normal timer except it uses the EVIN_A input as the clock.
Refer to "11.3 Basic Counter Operation" for basic operation and control.
PWM mode (Timers 0–3)11.5
Each timer can generate a PWM waveform. When using this function, write "1" to the PTSELx register to set the
timer to PWM mode.
The compare data register CDx[7:0] is provided for each timer to control the PWM waveform. In PWM mode, the
timer compares data between the down counter and the compare data register and outputs the compare match signal if
their contents are matched. At the same time a compare match interrupt occurs. Furthermore, the timer output signal
rises with the underflow signal and falls with the compare match signal. As shown in Figure 11.5.1, the cycle and duty
ratio of the output signal can be controlled using the reload data register and the compare data register, respectively, to
generate a PWM signal. Note, however, the following condition must be met: RLD (reload data) > CD (compare data)
and CD ≠ 0. If RLD ≤ CD, the output signal is fixed at "1" after the first underflow occurs and does not fall to "0."
The generated PWM signal can be output from the TOUT_A (P11) or TOUT_B (P23) terminal (see Section 11.8).
Count clock
RLD register
CD register
Down-counter value
Compare match signal
Underflow signal
Timer output signal
Compare match interrupt
Underflow interrupt
Compare match signal
Underflow signal
Timer output signal
Underflow interrupt
7
6
70 65432107654
CD register value
3 2 1 0 7 6 5 4 3 2 1
RLD register value + 1
PWM mode
Normal mode
5.1 Generating PWM waveformFigure 11.
11 PROGRAMMABLE TIMER
11-6 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
16-bit timer mode (Timer 0 + 1, Timer 2 + 3)11.6
Timers 0 and 1, and Timers 2 and 3 combinations can be used as 16-bit timers.
To use Timers 0 and 1 as a 16-bit timer, write "1" to the Timer 0 16-bit mode select register MOD16_A.
The 16-bit timer is configured with Timer 0 for low-order byte and Timer 1 for high-order byte as shown in Figure
11.6.1.
Timer 0 Timer 1
Low-order 8 bits High-order 8 bits
Timer 0 + 1
Timer 0 clock selection
Underflow signal
Compare match signal
Interrupt
Timer 0 reset
Timer 0
clock
PWM output selection
PTSEL1
PTRST0
Data bus
Timer 1 reset
PTRST1
Timer 0
Run/Stop
PTRUN0
PTPS0[3:0]
Timer function setting
f
OSC1
/16 (2,048 Hz)
f
OSC1 FCSEL_A
f
OSC3
Pulse polarity setting
PLPUL_A
Output control
PTOUT_A
Event counter
mode setting
EVCNT_A
Reload data register
RLD0[7:0]
Compare data register
CD0[7:0]
Compare data register
CD1[7:0]
8-bit down counter
Reload data register
RLD1[7:0]
8-bit down counter
Timer
control
circuit
PWM waveform
generator
P10 port
TOUT_A
(P11)
P11 port
Clock
manager
Interrupt
control circuit
Selector
Data buffer
PTD0[7:0]
Data buffer
PTD1[7:0]
Comparator
1/2
EVIN_A
(P10)
6.1 Configuration of 16-bit timer (Timer 0 + 1)Figure 11.
In 16-bit timer mode, the Timer 0 register settings are effective for timer RUN/STOP control and count clock fre-
quency selection. The event counter function can also be used. Timer 1 uses the Timer 0 underflow signal as the count
clock, therefore, the Timer 1 RUN/STOP control and count clock frequency select registers become invalid. However,
the PWM output function must be controlled using the Timer 1 control register. Timer 1 output signal is automatically
selected for the TOUT_A output (the TOUT_A output select register is ineffective). The reload data must be preset
to Timer 0 and Timer 1 separately using each PTRSTx register.
The counter data of a 16-bit timer must be read from the low-order 4 bits. In 16-bit timer mode, the high-order data
(PTD0[7:4], PTD1[3:0], PTD1[7:4]) is latched by reading the low-order 4 bits (PTD0[3:0]). The counter keeps count-
ing. However, the latched high-order data is maintained until the next reading of low-order data. Therefore, after
the low-order 4-bit data (PTD0[3:0]) is read, the high-order data (PTD0[7:4], PTD1[3:0], PTD1[7:4]) can be read
regardless of the order for reading. If data other than the low-order 4 bits (PTD0[3:0]) is read first, the hold function
is not activated. In this case, the correct counter data cannot be read.
The description above is applied when Timers 2 and 3 are used as a 16-bit timer.
Interrupt Function11.7
The programmable timer can generate interrupts from the underflow and compare match signals of each timer. See
Figures 11.3.1 and 11.5.1 for the interrupt timing.
Note: The compare match interrupt can be generated only when the timer is set to PWM mode.
The underflow and compare match signals set the corresponding interrupt factor flag IPTx and ICTCx to "1," and an
interrupt is generated. The interrupt can also be masked by setting the corresponding interrupt mask registers EIPTx
and EICTCx. However, the interrupt factor flag is set to "1" by an underflow/compare match of the corresponding
timer regardless of the interrupt mask register setting.
When Timers 0 and 1 are used as a 16-bit timer, an interrupt is generated by an underflow of Timer 1. In this case,
IPT0 is not set to "1" by a Timer 0 underflow. The compare match interrupt uses ICTC1 of Timer 1. The same applies
when other timers are used as a 16-bit timer.
11 PROGRAMMABLE TIMER
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(Rev. 1.1)
TOUT Output Control11.8
The programmable timer Ch.A (Timers 0 and 1) can generate the TOUT_A signal from the timer underflow and
compare match signals. The TOUT_A signal is generated by dividing the underflow signal by 2 in normal mode. In
PWM mode, the PWM signal generated as described above is output as the TOUT_A signal.
8.1 TOUT outputs and control registersTable 11.
Output terminal Output control register Output select register Output timer
TOUT_A (P11) PTOUT_A CHSEL_A = "0" Timer 0
CHSEL_A = "1" Timer 1
TOUT_B (P23) PTOUT_B CHSEL_B = "0" Timer 2
CHSEL_B = "1" Timer 3
It is possible to select either Timer 0 or Timer 1 output to be used by the TOUT output select register CHSEL_A.
In 16-bit timer mode, Timer 1 is always selected for generating the TOUT_A signal regardless of how CHSEL_A
is set.
The TOUT signal generated by each timer can be output from the TOUT_A (P11) or TOUT_B (P23) terminal to
supply a clock to an external device.
The output of the TOUT_A signal is controlled by the PTOUT_A register. When "1" is written to the PTOUT_A
register, the TOUT_A signal is output from the corresponding I/O port terminal.
When TOUT output is enabled, the I/O port is automatically set to output mode and it outputs the TOUT signal
sent from the timer. The I/O control register (IOC11/IOC23) and the data register (P11/P23) are ineffective. When
PTOUT_A is set to "0," the I/O port control registers become effective.
Since the TOUT_A signal is generated asynchronously from the PTOUT_A register, a hazard within 1/2 cycle is
generated when the signal is turned on and off by setting the register.
Figure 11.8.1 shows the output waveform of the TOUT_A signal.
PTOUT_A
TOUT_A output
01
8.1 Output waveform of the TOUT_A signalFigure 11.
Ch.B can be controlled the same as above to output the TOUT_B signal.
Clock Output to Serial Interface and R/F Converter11.9
The signal that is made from underflows of Timer 1 by dividing them by 2, can be used as the clock source for the
serial interface and R/F converter. Timer 1 always outputs the clock to the serial interface and R/F converter by setting
Timer 1 into RUN state (PTRUN1 = "1"). It is not necessary to control with the PTOUT_A register.
PTRUN1
Timer 1 underflow
Source clock for serial I/F
and R/F converter
9.1 Clock output to serial interface and R/F converterFigure 11.
A setting value for the RLD1x register according to a transfer rate of the serial interface is calculated by the follow-
ing expression:
f
CNT1
RLD1x = ————— -1
2*bps
fCNT1: Timer 1 count clock frequency set by the PTPS1 register (See Table 11.2.1.)
bps: Transfer rate
(00H can be set to RLD1x)
Be aware that the maximum clock frequency for the serial interface is limited to 1 MHz when OSC3 is used as the
clock source.
11 PROGRAMMABLE TIMER
11-8 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
I/O Memory of Programmable Timer11.10
Table 11.10.1 shows the I/O addresses and the control bits for the programmable timer.
10.1 Control bits of programmable timerTable 11.
Address Register name R/W Default Setting/data Function
FF18H D3 PTPS03 R/W 0 F f3B f3/16 7 f13 f1/32 Programmable timer 0 count clock frequency
selection (f1 = fOSC1, f3 = fOSC3)
D2 PTPS02 R/W 0 E f3/2 A f3/32 6 f1/2 2 f1/64
D1 PTPS01 R/W 0 D f3/4 9 f3/64 5 f1/4 1 f1/256
D0 PTPS00 R/W 0 C f3/8 8 f3/256 4 f1/16 0 Off
FF19H D3 PTPS13 R/W 0 F f3B f3/16 7 f13 f1/32 Programmable timer 1 count clock frequency
selection (f1 = fOSC1, f3 = fOSC3)
D2 PTPS12 R/W 0 E f3/2 A f3/32 6 f1/2 2 f1/64
D1 PTPS11 R/W 0 D f3/4 9 f3/64 5 f1/4 1 f1/256
D0 PTPS10 R/W 0 C f3/8 8 f3/256 4 f1/16 0 Off
FF1AH D3 PTPS23 R/W 0 F f3B f3/16 7 f13 f1/32 Programmable timer 2 count clock frequency
selection (f1 = fOSC1, f3 = fOSC3)
D2 PTPS22 R/W 0 E f3/2 A f3/32 6 f1/2 2 f1/64
D1 PTPS21 R/W 0 D f3/4 9 f3/64 5 f1/4 1 f1/256
D0 PTPS20 R/W 0 C f3/8 8 f3/256 4 f1/16 0 Off
FF1BH D3 PTPS33 R/W 0 F f3B f3/16 7 f13 f1/32 Programmable timer 3 count clock frequency
selection (f1 = fOSC1, f3 = fOSC3)
D2 PTPS32 R/W 0 E f3/2 A f3/32 6 f1/2 2 f1/64
D1 PTPS31 R/W 0 D f3/4 9 f3/64 5 f1/4 1 f1/256
D0 PTPS30 R/W 0 C f3/8 8 f3/256 4 f1/16 0 Off
FF80H D3 MOD16_A R/W 0 1 16 bits 0 8 bits PTM0–1 16-bit mode selection
D2 EVCNT_A R/W 0 1 Event counter 0 Timer PTM0 counter mode selection
D1 FCSEL_A R/W 0 1 With noise reject 0 No noise reject
PTM0 function selection (for event counter mode)
D0 PLPUL_A R/W 0 1 ↑ (positive) 0 ↓ (negative)
PTM0 pulse polarity selection (event counter mode)
FF81H D3 PTSEL1 R/W 0 1 PWM 0 Normal Programmable timer 1 PWM output selection
D2 PTSEL0 R/W 0 1 PWM 0 Normal Programmable timer 0 PWM output selection
D1 CHSEL_A R/W 0 1 Timer 1 0 Timer 0 PTM0–1 TOUT_A output selection
D0 PTOUT_A R/W 0 1 On 0 Off PTM0–1 TOUT_A output control
FF82H D3 PTRST1 (*3) W – (*2) 1 Reset 0 Invalid Programmable timer 1 reset (reload)
D2 PTRUN1 R/W 0 1 Run 0 Stop Programmable timer 1 Run/Stop
D1 PTRST0 (*3) W – (*2) 1 Reset 0 Invalid Programmable timer 0 reset (reload)
D0 PTRUN0 R/W 0 1 Run 0 Stop Programmable timer 0 Run/Stop
FF84H D3 RLD03 R/W 0
0H–FH
Programmable timer 0 reload data
(low-order 4 bits)
RLD00 = LSB
D2 RLD02 R/W 0
D1 RLD01 R/W 0
D0 RLD00 R/W 0
FF85H D3 RLD07 R/W 0
0H–FH
Programmable timer 0 reload data
(high-order 4 bits)
RLD07 = MSB
D2 RLD06 R/W 0
D1 RLD05 R/W 0
D0 RLD04 R/W 0
FF86H D3 RLD13 R/W 0
0H–FH
Programmable timer 1 reload data
(low-order 4 bits)
RLD10 = LSB
D2 RLD12 R/W 0
D1 RLD11 R/W 0
D0 RLD10 R/W 0
FF87H D3 RLD17 R/W 0
0H–FH
Programmable timer 1 reload data
(high-order 4 bits)
RLD17 = MSB
D2 RLD16 R/W 0
D1 RLD15 R/W 0
D0 RLD14 R/W 0
FF88H D3 PTD03 R 0
0H–FH
Programmable timer 0 data (low-order 4 bits)
PTD00 = LSB
D2 PTD02 R 0
D1 PTD01 R 0
D0 PTD00 R 0
FF89H D3 PTD07 R 0
0H–FH
Programmable timer 0 data (high-order 4 bits)
PTD07 = MSB
D2 PTD06 R 0
D1 PTD05 R 0
D0 PTD04 R 0
FF8AH D3 PTD13 R 0
0H–FH
Programmable timer 1 data (low-order 4 bits)
PTD10 = LSB
D2 PTD12 R 0
D1 PTD11 R 0
D0 PTD10 R 0
FF8BH D3 PTD17 R 0
0H–FH
Programmable timer 1 data (high-order 4 bits)
PTD17 = MSB
D2 PTD16 R 0
D1 PTD15 R 0
D0 PTD14 R 0
11 PROGRAMMABLE TIMER
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 11-9
(Rev. 1.1)
Address Register name R/W Default Setting/data Function
FF8CH D3 CD03 R/W 0
0H–FH
Programmable timer 0 compare data
(high-order 4 bits)
CD00 = LSB
D2 CD02 R/W 0
D1 CD01 R/W 0
D0 CD00 R/W 0
FF8DH D3 CD07 R/W 0
0H–FH
Programmable timer 0 compare data
(high-order 4 bits)
CD07 = MSB
D2 CD06 R/W 0
D1 CD05 R/W 0
D0 CD04 R/W 0
FF8EH D3 CD13 R/W 0
0H–FH
Programmable timer 1 compare data
(low-order 4 bits)
CD10 = LSB
D2 CD12 R/W 0
D1 CD11 R/W 0
D0 CD10 R/W 0
FF8FH D3 CD17 R/W 0
0H–FH
Programmable timer 1 compare data
(high-order 4 bits)
CD17 = MSB
D2 CD16 R/W 0
D1 CD15 R/W 0
D0 CD14 R/W 0
FF90H D3 MOD16_B R/W 0 1 16 bits 0 8 bits PTM2–3 16-bit mode selection
D2 EVCNT_B R/W 0 1 Event counter 0 Timer PTM2 counter mode selection
D1 FCSEL_B R/W 0 1 With noise reject 0 No noise reject
PTM2 function selection (for event counter mode)
D0 PLPUL_B R/W 0 1 ↑ (positive) 0 ↓ (negative)
PTM2 pulse polarity selection (event counter mode)
FF91H D3 PTSEL3 R/W 0 1 PWM 0 Normal Programmable timer 3 PWM output selection
D2 PTSEL2 R/W 0 1 PWM 0 Normal Programmable timer 2 PWM output selection
D1 CHSEL_B R/W 0 1 Timer 3 0 Timer 2 PTM2–3 TOUT_B output selection
D0 PTOUT_B R/W 0 1 On 0 Off PTM2–3 TOUT_B output control
FF92H D3 PTRST3 (*3) W – (*2) 1 Reset 0 Invalid Programmable timer 3 reset (reload)
D2 PTRUN3 R/W 0 1 Run 0 Stop Programmable timer 3 Run/Stop
D1 PTRST2 (*3) W – (*2) 1 Reset 0 Invalid Programmable timer 2 reset (reload)
D0 PTRUN2 R/W 0 1 Run 0 Stop Programmable timer 2 Run/Stop
FF94H D3 RLD23 R/W 0
0H–FH
Programmable timer 2 reload data
(low-order 4 bits)
RLD20 = LSB
D2 RLD22 R/W 0
D1 RLD21 R/W 0
D0 RLD20 R/W 0
FF95H D3 RLD27 R/W 0
0H–FH
Programmable timer 2 reload data
(high-order 4 bits)
RLD27 = MSB
D2 RLD26 R/W 0
D1 RLD25 R/W 0
D0 RLD24 R/W 0
FF96H D3 RLD33 R/W 0
0H–FH
Programmable timer 3 reload data
(low-order 4 bits)
RLD30 = LSB
D2 RLD32 R/W 0
D1 RLD31 R/W 0
D0 RLD30 R/W 0
FF97H D3 RLD37 R/W 0
0H–FH
Programmable timer 3 reload data
(high-order 4 bits)
RLD37 = MSB
D2 RLD36 R/W 0
D1 RLD35 R/W 0
D0 RLD34 R/W 0
FF98H D3 PTD23 R 0
0H–FH
Programmable timer 2 data (low-order 4 bits)
PTD20 = LSB
D2 PTD22 R 0
D1 PTD21 R 0
D0 PTD20 R 0
FF99H D3 PTD27 R 0
0H–FH
Programmable timer 2 data (high-order 4 bits)
PTD27 = MSB
D2 PTD26 R 0
D1 PTD25 R 0
D0 PTD24 R 0
FF9AH D3 PTD33 R 0
0H–FH
Programmable timer 3 data (low-order 4 bits)
PTD30 = LSB
D2 PTD32 R 0
D1 PTD31 R 0
D0 PTD30 R 0
FF9BH D3 PTD37 R 0
0H–FH
Programmable timer 3 data (high-order 4 bits)
PTD37 =MSB
D2 PTD36 R 0
D1 PTD35 R 0
D0 PTD34 R 0
FF9CH D3 CD23 R/W 0
0H–FH
Programmable timer 2 compare data
(low-order 4 bits)
CD20 = LSB
D2 CD22 R/W 0
D1 CD21 R/W 0
D0 CD20 R/W 0
11 PROGRAMMABLE TIMER
11-10 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
Address Register name R/W Default Setting/data Function
FF9DH D3 CD27 R/W 0
0H–FH
Programmable timer 2 compare data
(high-order 4 bits)
CD27 = MSB
D2 CD26 R/W 0
D1 CD25 R/W 0
D0 CD24 R/W 0
FF9EH D3 CD33 R/W 0
0H–FH
Programmable timer 3 compare data
(low-order 4 bits)
CD30 = LSB
D2 CD32 R/W 0
D1 CD31 R/W 0
D0 CD30 R/W 0
FF9FH D3 CD37 R/W 0
0H–FH
Programmable timer 3 compare data
(high-order 4 bits)
CD37 = MSB
D2 CD36 R/W 0
D1 CD35 R/W 0
D0 CD34 R/W 0
*1: Initial value at initial reset *2: Not set in the circuit *3: Constantly "0" when being read
PTPS0[3:0]: Timer 0 count clock frequency select register (FF18H)
PTPS1[3:0]: Timer 1 count clock frequency select register (FF19H)
PTPS2[3:0]: Timer 2 count clock frequency select register (FF1AH)
PTPS3[3:0]: Timer 3 count clock frequency select register (FF1BH)
Selects the count clock frequency for each timer.
10.2 Selecting count clock frequencyTable 11.
PTPSx[3:0] Timer clock
FH fOSC3
EH fOSC3 / 2
DH fOSC3 / 4
CH fOSC3 / 8
BH fOSC3 / 16
AH fOSC3 / 32
9H fOSC3 / 64
8H fOSC3 / 256
7H fOSC1 (32 kHz)
6H fOSC1 / 2 (16 kHz)
5H fOSC1 / 4 (8 kHz)
4H fOSC1 / 16 (2 kHz)
3H fOSC1 / 32 (1 kHz)
2H fOSC1 / 64 (512 Hz)
1H fOSC1 / 256 (128 Hz)
0H Off
fOSC1: OSC1 oscillation frequency. ( ) indicates the frequency when fOSC1 = 32 kHz.
fOSC3: OSC3 oscillation frequency
The clock manager generates the down-count clock for each timer by dividing the OSC1 or OSC3 clock. Table
11.2.1 lists the 15 count clocks that can be generated by the clock manager, and the clock to be used for each
timer can be selected using PTPSx[3:0]. At initial reset, the PTPSx[3:0] register is set to "0H" and the clock sup-
ply from the clock manager to the programmable timer is disabled. Before the timer can be run, select a clock to
enable the clock supply.
Stop the clock supply to the timers shown below by setting PTPSx[3:0] to "0H" to reduce current consumption.
• Unused timer
• Timer used as an event counter that inputs an external clock
• Upper 8-bit timer (Timer 1, Timer 3) when the timer unit is used as 16-bit × 1 channel configuration.
At initial reset, these registers are set to "0."
PLPUL_A: Timer 0 pulse polarity select register (FF80H•D0)
PLPUL_B: Timer 2 pulse polarity select register (FF90H•D0)
Selects the count pulse polarity in the event counter mode.
When "1" is written: Rising edge
When "0" is written: Falling edge
Reading: Valid
11 PROGRAMMABLE TIMER
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 11-11
(Rev. 1.1)
The count timing in the event counter mode is selected from either the falling edge of the external clock input to
the EVIN_A (P10) and EVIN_B (P22) terminals or the rising edge. When "0" is written to these registers, the
falling edge is selected and when "1" is written, the rising edge is selected. These registers are effective only when
the timer is used in the event counter mode. At initial reset, these registers are set to "0."
FCSEL_A: Timer 0 function select register (FF80H•D1)
FCSEL_B: Timer 2 function select register (FF90H•D1)
Selects whether the noise rejector of the clock input circuit will be used or not in the event counter mode.
When "1" is written: With noise rejector
When "0" is written: Without noise rejector
Reading: Valid
When "1" is written to these registers, the noise rejector is used and counting is done by an external clock (input
from EVIN_A or EVIN_B) with 0.98 msec* or more pulse width. The noise rejector allows the counter to input
the clock at the second falling edge of the internal 2,048 Hz* signal after changing the input level of the I/O port
terminal. Consequently, the pulse width of noise that can reliably be rejected is 0.48 msec* or less.
(*: When fOSC1 = 32.768 kHz)
When "0" is written to these registers, the noise rejector is not used and the counting is done directly by an ex-
ternal clock input to the EVIN_A (P10) or EVIN_B (P22) terminal. These registers are effective only when the
timer is used in the event counter mode. At initial reset, these registers are set to "0."
EVCNT_A: Timer 0 counter mode select register (FF80H•D2)
EVCNT_B: Timer 2 counter mode select register (FF90H•D2)
Selects the counter mode for each timer.
When "1" is written: Event counter mode
When "0" is written: Timer mode
Reading: Valid
The counter modes for Timers 0 and 2 are selected from either the event counter mode or timer mode.
When "1" is written to these registers, event counter mode is selected. In this mode, Timers 0 and 2 count the
external clock input from the EVIN_A (P10) and EVIN_B (P22) terminals, respectively. When "0" is written,
timer mode is selected. In this mode, the timer counts the internal clock selected by the PTPSx[3:0] register. This
selection is effective even when these timer is used in 16-bit timer mode. At initial reset, these registers are set to
"0."
MOD16_A: Timer 0–1 16-bit timer mode select register (FF80H•D3)
MOD16_B: Timer 2–3 16-bit timer mode select register (FF90H•D3)
Selects 8-bit or 16-bit timer mode.
When "1" is written: 16-bit timer mode
When "0" is written: 8-bit timer mode
Reading: Valid
These registers are used to select whether Timers 0 and 1, and Timers 2 and 3 are used as two channels of inde-
pendent 8-bit timers or one channel of combined 16-bit timer. When "0" is written to these registers, the timers are
set to 8-bit timer mode. When "1" is written, the timers are set to 16-bit timer mode. For example, when Timers 0
and 1 are used in 16-bit timer mode, Timer 1 operates with the Timer 0 underflow signal as the count clock (both
timer mode and event counter mode). In 16-bit timer mode, the Timer 0 register settings are effective for timer
RUN/STOP control and count clock frequency selection (Timer 1 registers are ineffective). However, the PWM
output function must be controlled using the Timer 1 control register. The reload data must be preset to Timer 0
and Timer 1 separately using each PTRSTx register. These operations are the same when Timers 2 and 3 are used
as a 16-bit timer. At initial reset, these registers are set to "0."
11 PROGRAMMABLE TIMER
11-12 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
PTOUT_A: TOUT_A output control register (FF81H•D0)
PTOUT_B: TOUT_B output control register (FF91H•D0)
Controls TOUT signal outputs.
When "1" is written: TOUT output On
When "0" is written: TOUT output Off
Reading: Valid
When "1" is written to the register, the corresponding TOUT_A/TOUT_B signal is output from the P11/P23 ter-
minal. When TOUT output is enabled, the I/O port is automatically set to output mode and it outputs the TOUT
signal sent from the timer. The I/O control register (IOC11/IOC23) and the data register (P11/P23) are ineffective.
When this register is set to "0," the I/O port control registers become effective. At initial reset, these registers are
set to "0."
CHSEL_A: TOUT_A output select register (FF81H•D1)
CHSEL_B: TOUT_B output select register (FF91H•D1)
Selects the timer used for TOUT signal output.
When "1" is written: Low-order Timer (Timer 1/Timer 3)
When "0" is written: High-order Timer (Timer 0/Timer 2)
Reading: Valid
These registers are used to select whether the low-order timer (Timer 0/Timer 2) output is used as the TOUT
signal or the high-order timer (Timer 1/Timer 3) output is used. When "0" is written to the register, the low-order
timer output is selected. When "1" is written, the high-order timer output is selected. In 16-bit timer mode, the
high-order timer output is always selected regardless of how these registers are set. At initial reset, these registers
are set to "0."
PTSEL0: Timer 0 PWM mode select register (FF81H•D2)
PTSEL1: Timer 1 PWM mode select register (FF81H•D3)
PTSEL2: Timer 2 PWM mode select register (FF91H•D2)
PTSEL3: Timer 3 PWM mode select register (FF91H•D3)
Sets Timer x for PWM output.
When "1" is written: PWM output
When "0" is written: Normal output
Reading: Valid
When "1" is written to the PTSELx, the compare data register becomes effective and PWM waveform is gener-
ated using the underflow and compare match signals. When "0" is written, the timer outputs the normal clock
generated from the underflow signal. In 16-bit timer mode, the PTSELx register for the low-order timer (Timer
0/Timer 2) is ineffective. At initial reset, these registers are set to "0."
PTRUN0: Timer 0 RUN/STOP control register (FF82H•D0)
PTRUN1: Timer 1 RUN/STOP control register (FF82H•D2)
PTRUN2: Timer 2 RUN/STOP control register (FF92H•D0)
PTRUN3: Timer 3 RUN/STOP control register (FF92H•D2)
Controls the RUN/STOP of the counter.
When "1" is written: RUN
When "0" is written: STOP
Reading: Valid
The counter in Timer x starts counting down by writing "1" to the PTRUNx register and stops by writing "0." In
STOP status, the counter data is maintained until the counter is reset or is set in the next RUN status. When STOP
status changes to RUN status, the data that has been maintained can be used for resuming the count. In 16-bit
timer mode, the PTRUNx register for the high-order timer (Timer 1/Timer 3) is ineffective. At initial reset, these
registers are set to "0."
11 PROGRAMMABLE TIMER
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 11-13
(Rev. 1.1)
PTRST0: Timer 0 reset (reload) (FF82H•D1)
PTRST1: Timer 1 reset (reload) (FF82H•D3)
PTRST2: Timer 2 reset (reload) (FF92H•D1)
PTRST3: Timer 3 reset (reload) (FF92H•D3)
Resets the timer and preset reload data to the counter.
When "1" is written: Reset
When "0" is written: No operation
Reading: Always "0"
By writing "1" to PTRSTx, the reload data in the reload register RLDx[7:0] is preset to the counter in Timer x.
When the counter is preset in the RUN status, the counter restarts immediately after presetting. In the case of
STOP status, the reload data is preset to the counter and is maintained. No operation results when "0" is writ-
ten.
The PTRSTx registers are all effective even in 16-bit timer mode, and reload data must be preset to both the
high-order timer (Timer 1/Timer 3) and the low-order timer (Timer 0/Timer 2) separately. Since these bits are
exclusively for writing, always set to "0" during reading.
RLD0[7:0]: Timer 0 reload data register (FF85H, FF84H)
RLD1[7:0]: Timer 1 reload data register (FF87H, FF86H)
RLD2[7:0]: Timer 2 reload data register (FF95H, FF94H)
RLD3[7:0]: Timer 3 reload data register (FF97H, FF96H)
Sets the initial value for the counter. The reload data written in these registers are loaded to the respective coun-
ters. The counter counts down using the data as the initial value for counting. Reload data is loaded to the counter
when the counter is reset by writing "1" to the PTRSTx register, or when counter underflow occurs. At initial
reset, these registers are set to "00H."
PTD0[7:0]: Timer 0 counter data (FF89H, FF88H)
PTD1[7:0]: Timer 1 counter data (FF8BH, FF8AH)
PTD2[7:0]: Timer 2 counter data (FF99H, FF98H)
PTD3[7:0]: Timer 3 counter data (FF9BH, FF9AH)
Count data in the programmable timer can be read from these latches. The low-order 4 bits of the count data in
Timer x can be read from PTDx[3:0], and the high-order data can be read from PTDx[7:4]. Since the high-order
4 bits are held by reading the low-order 4 bits, be sure to read the low-order 4 bits first. In 16-bit timer mode, the
high-order 12 bits are held by reading the low-order 4 bits, be sure to read the low-order 4 bits first. Since these
latches are exclusively for reading, the writing operation is invalid. At initial reset, these counter data are set to
"00H."
CD0[7:0]: Timer 0 compare data register (FF8DH, FF8CH)
CD1[7:0]: Timer 1 compare data register (FF8FH, FF8EH)
CD2[7:0]: Timer 2 compare data register (FF9DH, FF9CH)
CD3[7:0]: Timer 3 compare data register (FF9FH, FF9EH)
Sets the compare data for PWM output. When the timer is set to PWM mode, the compare data set in this register
is compared with the counter data and outputs the compare match signal if they are matched. The compare match
signal is used for generating an interrupt and controlling the duty ratio of the PWM waveform.
At initial reset, these registers are set to "00H."
Precautions11.11
• When reading counter data, be sure to read the low-order 4 bits (PTDx[3:0]) first. The high-order 4 bits (PTDx[7:4])
are latched when the low-order 4 bits are read and they are held until the next reading of the low-order 4 bits. In
16-bit timer mode, the high-order 12 bits are held by reading the low-order 4 bits, be sure to read the low-order 4
bits first. When the CPU is running with the OSC1 clock and the programmable timer is running with the OSC3
clock, stop the timer before reading the counter data to read the proper data.
11 PROGRAMMABLE TIMER
11-14 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
• The programmable timer actually enters RUN/STOP status in synchronization with the falling edge of the input
clock after writing to the PTRUNx register. Consequently, when "0" is written to the PTRUNx register, the timer
enters STOP status at the point where the counter is decremented (-1). The PTRUNx register maintains "1" for
reading until the timer actually stops.
PTRUNx (WR)
PTDx[7:0] 42H 41H 40H 3FH 3EH 3DH
PTRUNx (RD)
Count clock
"1" (RUN)
writing
"0" (STOP)
writing
11.1 Timing chart for RUN/STOP control (timer mode)Figure 11.
In event counter mode, the timer starts counting at the first event clock.
42H 41H 40H 3FH 3EH 3DH
"1" (RUN)
writing
"0" (STOP)
writing
PTRUNx (WR)
PTDx[7:0]
PTRUNx (RD)
Count clock
11.2 Timing chart for RUN/STOP control (event counter mode)Figure 11.
• Since the TOUT_A and TOUT_B signals are generated asynchronously from the PTOUT_A and PTOUT_B reg-
isters, a hazard within 1/2 cycle is generated when the signal is turned on and off by setting the register.
• When the OSC3 oscillation clock is selected for the clock source, it is necessary to turn the OSC3 oscillation on,
prior to using the programmable timer. However the OSC3 oscillation circuit requires several tens of µsec to several
tens of msec after turning the circuit on until the oscillation stabilizes. Therefore, allow an adequate interval from
turning the OSC3 oscillation circuit on to starting the programmable timer. Refer to the "Oscillation Circuit and
Clock Control" chapter, for the control and notes of the OSC3 oscillation circuit.
At initial reset, the OSC3 oscillation circuit is set in off state.
• For the reason below, pay attention to the reload data write timing when changing the interval of the programmable
timer interrupts while the programmable timer is running.
The programmable timer counts down at the falling edge of the input clock and at the same time it generates an
interrupt if the counter underflows. Then it starts loading the reload data to the counter and the counter data is
determined at the next rising edge of the input clock (period shown in as ➀ in the figure).
Count clock
Counter data
(continuous mode) (Reload data = 25H)
03H 02H 01H 00H 25H 24H
Counter data is determined by reloading.Underflow (interrupt is generated)
➀
11.3 Reload timing for programmable timerFigure 11.
To avoid improper reloading, do not rewrite the reload data after an interrupt occurs until the counter data is de-
termined including the reloading period ➀. Be especially careful when using the OSC1 (low-speed clock) as the
clock source of the programmable timer and the CPU is operating with the OSC3 (high-speed clock).
• The programmable timer count clock does not synch with the CPU clock. Therefore, the correct value may not be
obtained depending on the count data read and count-up timings. To avoid this problem, the programmable timer
count data should be read by one of the procedures shown below.
- Read the count data twice and verify if there is any difference between them.
- Temporarily stop the programmable timer when the counter data is read to obtain proper data.
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S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 12-1
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I/O Ports 12
Configuration of I/O Ports12.1
The S1C6F016 is equipped with 24 bits of I/O ports (P00–P03, P10–P13, P20–P23, P30–P33, P40–P43, and P50–
P53) in which the input/output direction can be switched with software.
Figure 12.1.1 shows the structure of an I/O port.
Input
control
Data bus
Pxx
Data
register
I/O control
register (IOC)
Pull-down control
register (PUL)
*1
*2
*1: During output mode
*2: During input mode VSS
VDD
Mask
option
1.1 Structure of I/O portFigure 12.
Note: If an output terminal (including a special output terminal) of this IC is used to drive an external com-
ponent that consumes a large amount of current such as a bipolar transistor, design the pattern of
traces on the printed circuit board so that the operation of the external component does not affect
the IC power supply. Refer to "Precautions on Mounting" in Appendix, for more information.
Each I/O port terminal provides an internal pull-down resistor. The custom mask option model allows selection of
the pull-down resistor to be connected or disconnected in 1-bit units. (The standard mask option models come with
or without pull-down resistors.) When "Use" is selected by mask option, the port suits input from the push switch,
key matrix, and so forth. When "Not use" is selected, the port can be used for slide switch input and interfacing with
other LSIs.
The P00 and P01 I/O ports can also be used as the Run/Stop and Lap direct inputs for the stopwatch timer. The P10
and P23 ports can also be used as the event counter inputs for the programmable timer.
The I/O port terminals P11–P13 and P23 are shared with the special output (TOUT_A, BZ, FOUT, TOUT_B) ter-
minals, P30–P33 are shared with the serial interface input/output terminals, and P50–P53 are shared with the R/F
converter input/output terminals. The software can select the function to be used. At initial reset, these terminals are
all set to the I/O port.
Table 12.1.1 shows the setting of the input/output terminals by function selection.
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12-2 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
1.1 Function settings of input/output terminalsTable 12.
Terminal
name
Terminal status
at initial reset
When special outputs/peripheral functions are used (selected by software)
Special output Serial I/F R/F
converter
Stopwatch
direct
input
Event
counterTOUT FOUT BZ Master Slave
P00 P00 (IN & PD*)
RUN/STOP
P01 P01 (IN & PD*) LAP
P02 P02 (IN & PD*)
P03 P03 (IN & PD*)
P10 P10 (IN & PD*) EVIN_A
P11 P11 (IN & PD*) TOUT_A
P12 P12 (IN & PD*) BZ
P13 P13 (IN & PD*) FOUT
P20–P21 P20–P21 (IN & PD*)
P22 P22 (IN & PD*) EVIN_B
P23 P23 (IN & PD*) TOUT_B
P30 P30 (IN & PD*) SCLK(O) SCLK(I)
P31 P31 (IN & PD*) SOUT(O) SOUT(O)
P32 P32 (IN & PD*) SIN(I) SIN(I)
P33 P33 (IN & PD*) SRDY(O)/SS(I)
P40–P43 P40–P43 (IN & PD*)
P50 P50 (IN & PD*) RFOUT
P51 P51 (IN & PD*) SEN0
P52 P52 (IN & PD*) REF0
P53 P53 (IN & PD*) RFIN0
* IN & PD (Input with pulled down): When "Pull-Down Used" is selected by mask option (high impedance when "Pull-
Down Not Used" is selected)
When these ports are used as I/O ports, the ports can be set to either input mode or output mode individually (in 1-bit
units). The mode can be set by writing data to the I/O control registers.
When the special output or peripheral function is used, the input/output direction of the port is automatically config-
ured by switching the terminal function and the I/O control registers becomes ineffective. For switching the terminal
function and input/output control, refer to respective peripheral circuit chapter.
Note: Before the port function is configured, the circuit that uses the port (e.g. input interrupt, multiple key
entry reset, serial interface, R/F converter, event counter input, direct RUN/LAP input for stopwatch)
must be disabled.
Mask Option12.2
Custom mask option
The output specification of each I/O port during output mode can be selected from either complementary output
or P-channel open drain output by mask option. This selection can be done in 1-bit units. When P-channel open
drain output is selected, do not apply a voltage exceeding the power supply voltage to the port.
The mask option also allows selection of whether the pull-down resistor is used or not during input mode. This
selection can be done in 1-bit units. When "Not use" is selected, take care that the floating status does not occur
during input mode.
The pull-down resistor for input mode and output specification (complementary output or P-channel open drain
output) selected by mask option are effective even when I/O ports are used for input/output of the serial interface
and R/F converter.
The I/O ports P20–P53 input/output terminals are shared with the SEG terminals. This mask option allows selec-
tion of whether each of these terminals is used for the I/O port or the SEG output. Refer to "Mask Option" in the
"LCD Driver" chapter for details.
Standard mask option Type B and Type E
The output specification for output mode is fixed at complementary output.
The internal pull-down resistor is connected to all the I/O ports.
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(Rev. 1.1)
Standard mask option Type G
The output specification for output mode is fixed at complementary output.
The internal pull-down resistor is connected to the I/O ports except for P10 and P11.
I/O Control Registers and Input/Output Mode12.3
The I/O ports can be placed into input or output mode by writing data to the corresponding I/O control registers
IOCxx.
To set a port to input mode, write "0" to the I/O control register. When an I/O port is set to input mode, it becomes
high impedance status and works as an input port.
However, when the pull-down explained in Section 12.5 has been enabled by software, the input line is pulled down
only during this input mode.
To set a port to output mode, write "1" to the I/O control register. When an I/O port is set to output mode, it works as
an output port. The port outputs a high level (VDD) when the port output data is "1," and a low level (VSS) when the
port output data is "0." The I/O ports allow software to read data even in output mode. In this case, the data register
value is read out.
At initial reset, the I/O control registers are set to "0," and the I/O ports enter input mode.
When the peripheral input/output or special output function is selected (see Table 12.1.1), the input/output direction
is controlled by the hardware. In this case, I/O control register settings are ineffective.
Input Interface Level12.4
The I/O ports P00–P03 and P10–P13 allow software to select an input interface level. When the input interface level
select register SMTxx is set to "0," the corresponding port is configured with a CMOS level input interface. When
SMTxx is set to "1," the port is configured with a CMOS Schmitt level input interface. At initial reset, all the ports
are configured with a CMOS Schmitt level interface.
The input interface level select register of the port that is set for a peripheral input functions the same as the I/O
port.
The input interface level of the P2 to P5 ports are fixed at a CMOS Schmitt level.
Pull-down During Input Mode12.5
A pull-down resistor that activates during the input mode can be built into the I/O ports of the S1C6F016 by mask
option. The pull-down resistor becomes effective by writing "1" to the pull-down control register PULxx that corre-
sponds to each port, and the input line is pulled down during input mode. When "0" is written to PULxx or in output
mode, the port will not be pulled down.
At initial reset, the pull-down control registers are set to "1."
The pull-down control registers of the ports in which the pull-down resistor is disconnected by custom mask option
can be used as general purpose registers.
Even if the pull-down resistor has been connected, the pull-down control register of the port that is set for a peripheral
output, R/F converter input/output or output special output (see Table 12.1.1) can be used as a general purpose register
that does not affect the pull-down control. The pull-down control register of the port that is set for a peripheral input
(except for the R/F converter) functions the same as the I/O port.
Key Input Interrupt Function12.6
Eight bits of the I/O ports (P00–P03, P10–P13) provide the interrupt function. The conditions for generating an inter-
rupt can be set with software. Further, whether to mask the interrupt function can be selected with software. Figure
12.6.1 shows the configuration of the key input interrupt circuit.
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Data bus
Address
Address
Address
Address
Interrupt polarity select
register (PCP00)
Noise
rejector
MUX
Interrupt select
register (SIP00)
Interrupt factor
flag (IK00)
Address
Interrupt mask
register (EIK00)
Address
Noise reject select
register (NRSP[1:0])
P00
P01
P02
P03
Sleep
cancellation
Interrupt
request
Address
Address
Address
Address
Interrupt polarity select
register (PCP10)
Noise
rejector
MUX
Interrupt select
register (SIP10)
Interrupt factor
flag (IK10)
Address
Interrupt mask
register (EIK10)
Address
Noise reject select
register (NRSP1[1:0])
P10
P11
P12
P13
Sleep
cancellation
Interrupt
request
6.1 Key input interrupt circuit configurationFigure 12.
The interrupt select registers (SIP0[3:0], SIP1[3:0]) and interrupt polarity select registers (PCP0[3:0], PCP1[3:0]) are
individually provided for the I/O ports P00–P03 and P10–P13.
The interrupt select registers (SIPxx) select the ports to be used for generating interrupts or canceling SLEEP mode.
Writing "1" to an interrupt select register incorporates that port into the key input interrupt generation conditions.
Changing the port where the interrupt select register has been set to "0" does not affect the generation of the inter-
rupt.
The key input interrupt timing can be selected using the interrupt polarity select registers (PCPxx) so that an interrupt
will be generated at the rising edge or falling edge of the input.
By setting these two conditions, an interrupt request signal and a SLEEP cancellation signal are generated at the rising
or falling edge (selected by PCPxx) of the signal input to the port (selected by SIPxx).
When a key input interrupt factor occurs, the interrupt factor flag (IK00–IK03, IK10–IK13) is set to "1." At the
same time, an interrupt request is generated to the CPU if the corresponding interrupt mask register (EIK00–EIK03,
EIK10–EIK13) is set to "1."
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When the interrupt mask register (EIKxx) is set to "0," the interrupt request is masked and no interrupt is generated
to the CPU.
The key input interrupt circuit has a noise rejector to avoid unnecessary interrupt generation due to noise or chattering.
This noise rejector allows selection of a noise-reject frequency from among three types shown in Table 12.6.1. Use the
NRSP0[1:0] register for P00–P03 ports or NRSP1[1:0] register for P10–P13 ports to select a noise-reject frequency.
If a pulse shorter than the selected width is input to the port, an interrupt is not generated. When high speed response
is required, turns the noise rejecter off (bypassed).
6.1 Setting up noise rejectorTable 12.
NRSP0[1:0]/NRSP1[1:0] Noise reject frequency Reject pulse width
3 fOSC1 / 256 (128 Hz) 7.8 msec
2 fOSC1 / 64 (512 Hz) 2.0 msec
1 fOSC1 / 16 (2 kHz) 0.5 msec
0 Off (bypassed) –
Notes: • Be sure to turn the noise rejector off before executing the SLP instruction.
• Reactivating from SLEEP status can only be done by generation of a key input interrupt factor.
Therefore when using the SLEEP function, it is necessary to set the interrupt select register
(SIPxx = "1") of the port to be used for releasing SLEEP status before executing the SLP instruc-
tion. Furthermore, enable the key input interrupt using the corresponding interrupt mask register
(EIKxx = "1") before executing the SLP instruction to run key input interrupt handler routine after
SLEEP status is released.
I/O memory of I/O ports12.7
Table 12.7.1 shows the I/O addresses and the control bits for the I/O ports.
7.1 Control bits of I/O portsTable 12.
Address Register name R/W Default Setting/data Function
FF11H D3 NRSP11 R/W 0 3 f1/256 1 f1/16 P1 key input interrupt noise reject frequency
selection (f1 = fOSC1, f3 = fOSC3)
D2 NRSP10 R/W 0 2 f1/64 0 Off
D1 NRSP01 R/W 0 3 f1/256 1 f1/16 P0 key input interrupt noise reject frequency
selection (f1 = fOSC1, f3 = fOSC3)
D0 NRSP00 R/W 0 2 f1/64 0 Off
FF20H D3 P03 R/W 1 1 High 0 Low P03 I/O port data
D2 P02 R/W 1 1 High 0 Low P02 I/O port data
D1 P01 R/W 1 1 High 0 Low P01 I/O port data
D0 P00 R/W 1 1 High 0 Low P00 I/O port data
FF21H D3 IOC03 R/W 0 1 Output 0 Input P03 I/O control register
D2 IOC02 R/W 0 1 Output 0 Input P02 I/O control register
D1 IOC01 R/W 0 1 Output 0 Input P01 I/O control register
D0 IOC00 R/W 0 1 Output 0 Input P00 I/O control register
FF22H D3 PUL03 R/W 1 1 Enable 0 Disable P03 pull-down control register
D2 PUL02 R/W 1 1 Enable 0 Disable P02 pull-down control register
D1 PUL01 R/W 1 1 Enable 0 Disable P01 pull-down control register
D0 PUL00 R/W 1 1 Enable 0 Disable P00 pull-down control register
FF23H D3 SMT03 R/W 1 1 Schmitt 0 CMOS P03 input I/F level select register
D2 SMT02 R/W 1 1 Schmitt 0 CMOS P02 input I/F level select register
D1 SMT01 R/W 1 1 Schmitt 0 CMOS P01 input I/F level select register
D0 SMT00 R/W 1 1 Schmitt 0 CMOS P00 input I/F level select register
FF24H D3 P13 R/W 1 1 High 0 Low P13 I/O port data
D2 P12 R/W 1 1 High 0 Low P12 I/O port data
D1 P11 R/W 1 1 High 0 Low P11 I/O port data
D0 P10 R/W 1 1 High 0 Low P10 I/O port data
FF25H D3 IOC13 R/W 0 1 Output 0 Input P13 I/O control register
D2 IOC12 R/W 0 1 Output 0 Input P12 I/O control register
D1 IOC11 R/W 0 1 Output 0 Input P11 I/O control register
D0 IOC10 R/W 0 1 Output 0 Input P10 I/O control register
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12-6 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
Address Register name R/W Default Setting/data Function
FF26H D3 PUL13 R/W 1 1 Enable 0 Disable P13 pull-down control register
D2 PUL12 R/W 1 1 Enable 0 Disable P12 pull-down control register
D1 PUL11 R/W 1 1 Enable 0 Disable P11 pull-down control register
D0 PUL10 R/W 1 1 Enable 0 Disable P10 pull-down control register
FF27H D3 SMT13 R/W 1 1 Schmitt 0 CMOS P13 input I/F level select register
D2 SMT12 R/W 1 1 Schmitt 0 CMOS P12 input I/F level select register
D1 SMT11 R/W 1 1 Schmitt 0 CMOS P11 input I/F level select register
D0 SMT10 R/W 1 1 Schmitt 0 CMOS P10 input I/F level select register
FF28H D3 P23 R/W 1 1 High 0 Low P23 I/O port data
D2 P22 R/W 1 1 High 0 Low P22 I/O port data
D1 P21 R/W 1 1 High 0 Low P21 I/O port data
D0 P20 R/W 1 1 High 0 Low P20 I/O port data
FF29H D3 IOC23 R/W 0 1 Output 0 Input P23 I/O control register
D2 IOC22 R/W 0 1 Output 0 Input P22 I/O control register
D1 IOC21 R/W 0 1 Output 0 Input P21 I/O control register
D0 IOC20 R/W 0 1 Output 0 Input P20 I/O control register
FF2AH D3 PUL23 R/W 1 1 Enable 0 Disable P23 pull-down control register
D2 PUL22 R/W 1 1 Enable 0 Disable P22 pull-down control register
D1 PUL21 R/W 1 1 Enable 0 Disable P21 pull-down control register
D0 PUL20 R/W 1 1 Enable 0 Disable P20 pull-down control register
FF2CH D3 P33 R/W 1 1 High 0 Low P33 I/O port data
D2 P32 R/W 1 1 High 0 Low P32 I/O port data
D1 P31 R/W 1 1 High 0 Low P31 I/O port data
D0 P30 R/W 1 1 High 0 Low P30 I/O port data
FF2DH D3 IOC33 R/W 0 1 Output 0 Input P33 I/O control register
D2 IOC32 R/W 0 1 Output 0 Input P32 I/O control register
D1 IOC31 R/W 0 1 Output 0 Input P31 I/O control register
D0 IOC30 R/W 0 1 Output 0 Input P30 I/O control register
FF2EH D3 PUL33 R/W 1 1 Enable 0 Disable P33 pull-down control register
D2 PUL32 R/W 1 1 Enable 0 Disable P32 pull-down control register
D1 PUL31 R/W 1 1 Enable 0 Disable P31 pull-down control register
D0 PUL30 R/W 1 1 Enable 0 Disable P30 pull-down control register
FF30H D3 P43 R/W 1 1 High 0 Low P43 I/O port data
D2 P42 R/W 1 1 High 0 Low P42 I/O port data
D1 P41 R/W 1 1 High 0 Low P41 I/O port data
D0 P40 R/W 1 1 High 0 Low P40 I/O port data
FF31H D3 IOC43 R/W 0 1 Output 0 Input P43 I/O control register
D2 IOC42 R/W 0 1 Output 0 Input P42 I/O control register
D1 IOC41 R/W 0 1 Output 0 Input P41 I/O control register
D0 IOC40 R/W 0 1 Output 0 Input P40 I/O control register
FF32H D3 PUL43 R/W 1 1 Enable 0 Disable P43 pull-down control register
D2 PUL42 R/W 1 1 Enable 0 Disable P42 pull-down control register
D1 PUL41 R/W 1 1 Enable 0 Disable P41 pull-down control register
D0 PUL40 R/W 1 1 Enable 0 Disable P40 pull-down control register
FF34H D3 P53 R/W 1 1 High 0 Low P53 I/O port data
D2 P52 R/W 1 1 High 0 Low P52 I/O port data
D1 P51 R/W 1 1 High 0 Low P51 I/O port data
D0 P50 R/W 1 1 High 0 Low P50 I/O port data
FF35H D3 IOC53 R/W 0 1 Output 0 Input P53 I/O control register
D2 IOC52 R/W 0 1 Output 0 Input P52 I/O control register
D1 IOC51 R/W 0 1 Output 0 Input P51 I/O control register
D0 IOC50 R/W 0 1 Output 0 Input P50 I/O control register
FF36H D3 PUL53 R/W 1 1 Enable 0 Disable P53 pull-down control register
D2 PUL52 R/W 1 1 Enable 0 Disable P52 pull-down control register
D1 PUL51 R/W 1 1 Enable 0 Disable P51 pull-down control register
D0 PUL50 R/W 1 1 Enable 0 Disable P50 pull-down control register
FF3CH D3 SIP03 R/W 0 1 Enable 0 Disable P03 (KEY03) interrupt select register
D2 SIP02 R/W 0 1 Enable 0 Disable P02 (KEY02) interrupt select register
D1 SIP01 R/W 0 1 Enable 0 Disable P01 (KEY01) interrupt select register
D0 SIP00 R/W 0 1 Enable 0 Disable P00 (KEY00) interrupt select register
FF3DH D3 PCP03 R/W 1 1 ↓ (falling edge) 0 ↑ (rising edge) P03 (KEY03) interrupt polarity select register
D2 PCP02 R/W 1 1 ↓ (falling edge) 0 ↑ (rising edge) P02 (KEY02) interrupt polarity select register
D1 PCP01 R/W 1 1 ↓ (falling edge) 0 ↑ (rising edge) P01 (KEY01) interrupt polarity select register
D0 PCP00 R/W 1 1 ↓ (falling edge) 0 ↑ (rising edge) P00 (KEY00) interrupt polarity select register
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S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 12-7
(Rev. 1.1)
Address Register name R/W Default Setting/data Function
FF3EH D3 SIP13 R/W 0 1 Enable 0 Disable P13(KEY13) interrupt select register
D2 SIP12 R/W 0 1 Enable 0 Disable P12(KEY12) interrupt select register
D1 SIP11 R/W 0 1 Enable 0 Disable P11(KEY11) interrupt select register
D0 SIP10 R/W 0 1 Enable 0 Disable P10(KEY10) interrupt select register
FF3FH D3 PCP13 R/W 1 1 ↓ (falling edge) 0 ↑ (rising edge) P13(KEY13) interrupt polarity select register
D2 PCP12 R/W 1 1 ↓ (falling edge) 0 ↑ (rising edge) P12(KEY12) interrupt polarity select register
D1 PCP11 R/W 1 1 ↓ (falling edge) 0 ↑ (rising edge) P11(KEY11) interrupt polarity select register
D0 PCP10 R/W 1 1 ↓ (falling edge) 0 ↑ (rising edge) P10(KEY10) interrupt polarity select register
*1: Initial value at initial reset *2: Not set in the circuit *3: Constantly "0" when being read
P0[3:0]: P0 I/O port data register (FF20H)
P1[3:0]: P1 I/O port data register (FF24H)
P2[3:0]: P2 I/O port data register (FF28H)
P3[3:0]: P3 I/O port data register (FF2CH)
P4[3:0]: P4 I/O port data register (FF30H)
P5[3:0]: P5 I/O port data register (FF34H)
I/O port data can be read and output data can be set through these registers.
When writing data
When "1" is written: High level
When "0" is written: Low level
When an I/O port is placed into output mode, the written data is output unchanged from the I/O port terminal.
When "1" is written as port data, the port terminal goes high (VDD), and when "0" is written, the terminal goes
low (VSS). Port data can be written also in the input mode.
When reading data
When "1" is read: High level
When "0" is read: Low level
When the I/O port is placed into input mode, the voltage level being input to the port terminal can be read out.
When the terminal voltage is high (VDD), the port data that can be read is "1," and when the terminal voltage is
low (VSS) the read data is "0." When the pull-down resistor option has been selected and the PULxx register is set
to "1," the built-in pull-down resistor goes on during input mode, so that the I/O port terminal is pulled down.
When the I/O port is placed into output mode, the register value is read. Therefore, when using the data register
of a port that is not used for signal input/output as a general-purpose register, set the port to output mode.
At initial reset, these registers are set to "1."
The data register of the port, which is set for an input/output of the serial interface or R/F converter or a special
output, becomes a general-purpose register that does not affect the input/output status.
Note: When I/O ports set in input mode is changed from high to low by the pull-down resistor, the fall of
the waveform is delayed on account of the time constant of the pull-down resistor and input gate
capacitance. Hence, when fetching input data, set an appropriate wait time.
Particular care needs to be taken of the key scan during key matrix configuration.
Make this waiting time the amount of time or more calculated by the following expression.
10 × C × R
C: terminal capacitance 15 pF + parasitic capacitance ? pF
R: pull-down resistance 500 kΩ (Max.)
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IOC0[3:0]: P0 port I/O control register (FF21H)
IOC1[3:0]: P1 port I/O control register (FF25H)
IOC2[3:0]: P2 port I/O control register (FF29H)
IOC3[3:0]: P3 port I/O control register (FF2DH)
IOC4[3:0]: P4 port I/O control register (FF31H)
IOC5[3:0]: P5 port I/O control register (FF35H)
Sets the I/O ports to input or output mode.
When "1" is written: Output mode
When "0" is written: Input mode
Reading: Valid
The input/output mode of the I/O ports are set in 1-bit units. Writing "1" to the I/O control register places the
corresponding I/O port into output mode, and writing "0" sets input mode. At initial reset, these registers are all
set to "0," so the I/O ports are placed in input mode.
The I/O control register of the port, which is set for an input/output of the serial interface or R/F converter or a
special output, are ineffective.
PUL0[3:0]: P0 port pull-down control register (FF22H)
PUL1[3:0]: P1 port pull-down control register (FF26H)
PUL2[3:0]: P2 port pull-down control register (FF2AH)
PUL3[3:0]: P3 port pull-down control register (FF2EH)
PUL4[3:0]: P4 port pull-down control register (FF32H)
PUL5[3:0]: P5 port pull-down control register (FF36H)
Enables the pull-down during input mode.
When "1" is written: Pull-down On
When "0" is written: Pull-down Off
Reading: Valid
These registers enable the built-in pull-down resistor to be effective during input mode in 1-bit units. (The pull-
down resistor is included into the ports selected by mask option.)
By writing "1" to the pull-down control register, the corresponding I/O ports are pulled down during input mode,
while writing "0" or output mode disables the pull-down function. At initial reset, these registers are all set to "1,"
so the pull-down function is enabled.
The pull-down control register of the port in which the pull-down resistor is not included becomes a general-
purpose register. The register of the port that is set as output for the serial interface, input/output for the R/F con-
verter or a special output can also be used as a general-purpose register that does not affect the pull-down control.
The pull-down control register of the port that is set as input for the serial interface functions the same as the I/O
port.
SMT0[3:0]: P0 port input interface level select register (FF23H)
SMT1[3:0]: P1 port input interface level select register (FF27H)
Selects an input interface level.
When "1" is written: CMOS Schmitt level
When "0" is written: CMOS level
Reading: Valid
These registers select the input interface level of the P0 and P1 I/O ports in 1-bit units. When "1" is written to
SMTxx, the corresponding I/O port Pxx is configured with a CMOS Schmitt level input interface. When "0" is
written, the port is configured with a CMOS level input interface. At initial reset, these registers are set to "1."
The input interface level of the P2 to P5 ports are fixed at a CMOS Schmitt level.
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SIP0[3:0]: P0 port interrupt select register (FF3CH)
SIP1[3:0]: P1 port interrupt select register (FF3EH)
Selects the ports used for the key input interrupt from P00–P03 and P10–P13.
When "1" is written: Interrupt enable
When "0" is written: Interrupt disable
Reading: Valid
By writing "1" to an interrupt select register (SIP0[3:0], SIP1[3:0]), the corresponding I/O port (P00–P03, P10–
P13) is enabled to generate interrupts. When "0" is written, the I/O port does not affect the interrupt generation.
Reactivating from SLEEP status can only be done by generation of a key input interrupt factor. Therefore when
using the SLEEP function, it is necessary to set the interrupt select register (SIPxx = "1") of the port to be used
for releasing SLEEP status before executing the SLP instruction.
At initial reset, these registers are set to "0."
PCP0[3:0]: P0 port interrupt polarity select register (FF3DH)
PCP1[3:0]: P1 port interrupt polarity select register (FF3FH)
Sets the interrupt conditions.
When "1" is written: Falling edge
When "0" is written: Rising edge
Reading: Valid
When "1" is written to an interrupt polarity select register (PCP0[3:0], PCP1[3:0]), the corresponding I/O port
(P00–P03, P10–P13) generates an interrupt at the falling edge of the input signal. When "0" is written, the I/O
port generates an interrupt at the rising edge of the input signal. At initial reset, these registers are set to "1."
NRSP0[1:0]: Key input interrupt 0–3 noise reject frequency select register (FF11H•D[1:0])
NRSP1[1:0]: Key input interrupt 4–7 noise reject frequency select register (FF11H•D[3:2])
Selects the noise reject frequency for the key input interrupts.
7.2 Setting up noise rejectorTable 12.
NRSP0[1:0]/NRSP1[1:0] Noise reject frequency Reject pulse width
3 fOSC1 / 256 (128 Hz) 7.8 msec
2 fOSC1 / 64 (512 Hz) 2.0 msec
1 fOSC1 / 16 (2 kHz) 0.5 msec
0 Off (bypassed) –
NRSP0[1:0] and NRSP1[1:0] are the noise reject frequency select registers that correspond to the key input inter-
rupts 0–3 (P00–P03) and the key input interrupts 4–7 (P10–P13), respectively. At initial reset, these registers are
set to "0."
12 I/O PORTS
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Precautions12.8
• When an I/O ports in input mode is changed from high to low by the pull-down resistor, the fall of the waveform is
delayed on account of the time constant of the pull-down resistor and input gate capacitance. Hence, when fetching
input data, set an appropriate wait time.
Particular care needs to be taken of the key scan during key matrix configuration.
Make this waiting time the amount of time or more calculated by the following expression.
10 × C × R
C: terminal capacitance 15 pF + parasitic capacitance ? pF
R: pull-down resistance 500 kΩ (Max.)
• Be sure to turn the noise rejector off before executing the SLP instruction.
• Reactivating from SLEEP status can only be done by generation of a key input interrupt factor. Therefore when
using the SLEEP function, it is necessary to set the interrupt select register (SIPxx = "1") of the port to be used for
releasing SLEEP status before executing the SLP instruction. Furthermore, enable the key input interrupt using the
corresponding interrupt mask register (EIKxx = "1") before executing the SLP instruction to run key input interrupt
handler routine after SLEEP status is released.
• Before the port function is configured, the circuit that uses the port (e.g. input interrupt, multiple key entry reset,
serial interface, R/F converter, event counter input, direct RUN/LAP input for stopwatch) must be disabled.
13 SERIAL INTERFACE
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Serial Interface13
Configuration of Serial Interface13.1
The S1C6F016 has a built-in 8-bit clock synchronous type serial interface. The CPU, via the 8-bit shift register, can
read the serial input data from the SIN terminal. Moreover, via the same 8-bit shift register, it can convert parallel
data to serial data and output it to the SOUT terminal. The synchronous clock for serial data input/output may be set
by software any one of seven types of master mode (internal clock mode: when the S1C6F016 is to be the master
for serial input/output) and one type of slave mode (external clock mode: when the S1C6F016 is to be the slave for
serial input/output).
The configuration of the serial interface is shown in Figure 13.1.1.
Clock
control
Transfer
mode control
Clock
manager
Interrupt control
SCLK
(P30)
SS
or
SRDY
(P33)
SIN
(P32)
SOUT
(P31)
8-bit shift register
SD[7:0]
Output
latch
Interrupt request
Serial interface
Data I/O permutation
SDP
SOUT enable
ESOUT
SMOD
Clock format selection
SCPS[1:0] SIF enable (P3x)
ESIF
SRDY_SS enable (P33)
SRDY_SS function selection
Mode selection
ENCS
ESREADY
SIF clock trigger
SCTRG
SIF clock selection
SIFCKS[2:0]
fOSC1
fOSC3
Programmable
timer 1
Data bus
1.1 Configuration of serial interfaceFigure 13.
Serial Interface Terminals13.2
The following shows the terminals used in the serial interface and their functions:
SCLK (P30)
Inputs or outputs the serial clock. By writing "1" to the ESIF register to enable the serial interface, the P30
terminal is switched to the SCLK terminal. In master mode, the SCLK terminal is configured for output and it
outputs the synchronous clock generated in the IC during data transfer. In slave mode, the SCLK terminal inputs
the synchronous clock output by the external master device.
SIN (P32)
Inputs serial data. By writing "1" to the ESIF register to enable the serial interface, the P32 terminal is switched
to the SIN terminal.
SOUT (P31)
Outputs serial data. By default, the SOUT terminal is not enabled even if "1" is written to the ESIF register. When
using the SOUT output, write "1" to the ESOUT register.
If serial input only is required, the P31 terminal can be used as an I/O port terminal.
SRDY (P33)
In slave mode, this terminal outputs the SRDY signal to the master device to indicate that the serial interface is
ready to transfer. By default, the SRDY terminal is not enabled even if the serial interface is set to slave mode.
When using the SRDY output in slave mode, write "1" to the ENCS and ESREADY registers.
SS (P33)
Inputs the SS (Slave Select) signal when the S1C6F016 is used as an SPI slave device. When using the SS input,
write "1" to ENCS and write "0" to ESREADY.
13 SERIAL INTERFACE
13-2 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
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The serial interface input/output ports are shared with the I/O port (P30–P33), and they are configured to the I/O port
terminals at initial reset. When using these terminals for the serial interface, switch the function with software as
described above. At least ESIF must be set to 1.
The switch operation automatically sets the input/output direction of the terminals. It is not necessary to set the I/O
port control registers. The I/O control registers and data registers of the I/O ports are ineffective. However, the pull-up
control registers of the I/O ports are effective when they are used for the serial inputs.
Mask Option13.3
Since the input/output terminals of the serial interface are shared with the I/O ports (P30–P33), the mask option that
selects the terminal specification for the I/O port is also applied to the serial interface terminals.
Custom mask option
The output specification of the SOUT, SCLK (in master mode) and SRDY (in slave mode) terminals that are used
as the serial interface outputs is respectively selected by the mask options for P31, P30 and P33. Either comple-
mentary output or P-channel open drain output can be selected as the output specification. However, when P-
channel open drain output is selected, do not apply voltage exceeding the power supply voltage to the terminal.
Furthermore, the pull-down resistor for the SIN, SCLK (in slave mode) and SS (in SPI slave mode) terminals that
are used as inputs can be incorporated by the mask options for P32, P30 and P33. When the pull-down resistor is
not used, take care that a floating status does not occur.
Standard mask option Type B, Type E, and Type G
The output specification of the P30–P33 I/O ports is fixed at a complementary output.
The P30–P33 I/O port terminals have a built-in pull-down resistor.
Therefore, the output specification of the SOUT, SCLK (in master mode) and SRDY (in slave mode) terminals
that are used as the serial interface outputs is a complementary output only. The SIN, SCLK (in slave mode) and
SS (in SPI slave mode) terminals that are used as inputs have a pull-down resistor.
Pull-down control when pull-down resistor is incorporated
When a pull-down resistor is incorporated at the serial input terminal, the pull-down resistor should be enabled/
disabled using the pull-down control register of the I/O port.
SIN terminal: PUL32 register
SCLK terminal: PUL30 register
SS terminal: PUL33 register
Refer to the "I/O Ports" chapter for controlling the pull-down resistors.
Operating Mode of Serial Interface13.4
The serial interface supports three operating modes: master mode, slave mode and SPI slave mode.
Master mode
Master mode is provided to use the S1C6F016 as the master device for serial transfer. In this mode, the serial
interface uses the internal clock supplied from the clock manager as the synchronous clock for serial transfer.
The synchronous clock is also output from the SCLK terminal to the slave device. The ready signal sent from the
slave device should be input through an I/O port (in input mode) and it should be read with software to control
data transfer.
The S1C6F016 set to master mode is also used as an SPI master device. The SS (Slave Select) signal should be
output by controlling an I/O port (in output mode) with software.
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S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 13-3
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Slave mode
Slave mode is provided to use the S1C6F016 as a slave device for serial transfer. In this mode, the serial interface
inputs the synchronous clock that is sent by the external master device from the SCLK terminal to perform se-
rial transfer. For the external master device to control data transfer, the serial interface can output a ready signal
indicating that it is ready to transfer from the SRDY terminal by hardware control.
SPI slave mode
SPI slave mode is provided to use the S1C6F016 as an SPI slave device. In this mode, the serial interface inputs
the synchronous clock that is sent by the external master device from the SCLK terminal to perform serial trans-
fer. The SPI master device outputs the SS (Slave Select) signal to select a slave device. SPI slave mode supports
the SS signal input.
Sample basic serial connection diagrams are shown in Figure 13.4.1.
S1C6F016 External
slave device
(a-1) Master mode
SCLK
SOUT
SIN
Pxx
CLK
SOUT
SIN
READY
S1C6F016 SPI slave
device
(a-2) Master mode (SPI)
SCLK
SOUT
SIN
Pxx
CLK
SDO
SDI
SS
S1C6F016 External
master device
(b) Slave mode
SCLK
SOUT
SIN
SRDY
CLK
SOUT
SIN
READY input
S1C6F016 SPI master
device
(c) SPI slave mode
SCLK
SOUT
SIN
SS
SCLK
SDO
SDI
SS
4.1 Sample basic connection of serial input/output terminalsFigure 13.
The SMOD, ENCS and ESREADY registers are used for setting the mode.
Master mode: SMOD = "1," ENCS = "0," ESREADY = "0"
Slave mode: SMOD = "0," ENCS = "1," ESREADY = "1"
SPI slave mode: SMOD = "0," ENCS = "1," ESREADY = "0"
Table 13.4.1 lists the combination of mode settings and used terminal configurations.
4.1 Mode settings and configurations of serial interface terminalsTable 13.
ESIF SMOD ENCS ESREADY ESOUT Mode P30
terminal
P31
terminal
P32
terminal
P33
terminal
1111*Master mode Prohibited
1 1 *0 1 SCLK (O) SOUT (O) SIN (I) P33 (I/O)
1 1 0 1 1 SCLK (O) SOUT (O) SIN (I) P33 (I/O)
1 1 *0 0 SCLK (O) P31 (I/O) SIN (I) P33 (I/O)
1 1 0 1 0 SCLK (O) P31 (I/O) SIN (I) P33 (I/O)
1 0 1 1 1 Slave mode SCLK (I) SOUT (O) SIN (I) SRDY (O)
1 0 1 1 0 SCLK (I) P31 (I/O) SIN (I) SRDY (O)
100*1 SCLK (I) SOUT (O) SIN (I) P33 (I/O)
100*0 SCLK (I) P31 (I/O) SIN (I) P33 (I/O)
1 0 1 0 1 SPI slave mode SCLK (I) SOUT (O) SIN (I) SS (I)
1 0 1 0 0 SCLK (I) P31 (I/O) SIN (I) SS (I)
0****Serial I/F not used P30 (I/O) P31 (I/O) P32 (I/O) P33 (I/O)
13 SERIAL INTERFACE
13-4 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
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Setting Synchronous Clock13.5
Selecting Source Clock13.5.1
When the serial interface is used in master mode, it uses the internal clock supplied from the clock manager as the
synchronous clock for data transfer. The clock manager generates six serial interface clocks by dividing the OSC1
or OSC3 clock. The synchronous clock used in master mode can be selected from seven types (the above six clocks
and the programmable timer 1 output clock). Use the SIFCKS[2:0] register to select one of them as shown in Table
13.5.1.1.
5.1.1 Serial interface clock frequenciesTable 13.
SIFCKS[2:0] SIF clock (master mode)
7 fOSC3 / 4 *
6 fOSC3 / 2 *
5 fOSC3 / 1 *
4 Programmable timer 1 *
3 fOSC1 / 4 (8 kHz)
2 fOSC1 / 2 (16 kHz)
1 fOSC1 / 1 (32 kHz)
0 Off (slave mode) *
fOSC1: OSC1 oscillation frequency. ( ) indicates the frequency when fOSC1 = 32 kHz.
fOSC3: OSC3 oscillation frequency
* The maximum clock frequency is limited to 1 MHz.
When programmable timer 1 is selected, the programmable timer 1 underflow signal is divided by 2 before it is used
as the synchronous clock. In this case, the programmable timer must be controlled before operating the serial inter-
face. Refer to the "Programmable Timer" chapter for controlling the programmable timer.
Fix SIFCKS[2:0] at "0" in slave mode.
At initial reset, "Off (slave mode)" is selected.
Selecting Synchronous Clock Format13.5.2
The format (polarity and phase) of the synchronous clock for the serial interface can be configured using the
SCPS[1:0] register.
5.2.1 Configuration of synchronous clock formatTable 13.
SCPS[1:0] Polarity Phase
3 Negative (SCLK) Rising edge (↑)
2 Negative (SCLK) Falling edge (↓)
1 Positive (SCLK) Falling edge (↓)
0 Positive (SCLK) Rising edge (↑)
At initial reset, the clock polarity is set to positive and the phase is set to the rising edge.
See Figure 13.6.5.1 for the data transfer timings by the synchronous clock format selected.
13 SERIAL INTERFACE
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 13-5
(Rev. 1.1)
Data Input/Output and Interrupt Function13.6
The serial interface of S1C6F016 can input/output data via the internal 8-bit shift register. The shift register operates
by synchronizing with either the synchronous clock output from the SCLK (P30) terminal (master mode), or the
synchronous clock input to the SCLK (P30) terminal (slave mode).
The serial interface generates an interrupt on completion of the 8-bit serial data input/output. Detection of serial data
input/output is done by counting of the synchronous clock SCLK; the clock completes input/output operation when
8 counts (equivalent to 8 cycles) have been made and then generates an interrupt.
The serial data input/output procedure is explained below:
Serial Data Output Procedure and Interrupt13.6.1
The S1C6F016 serial interface is capable of outputting parallel data as serial data, in units of 8 bits. By setting the
parallel data to the data registers SD[3:0] and SD[7:4], and writing "1" to SCTRG, it synchronizes with the synchro-
nous clock and the serial data is output to the SOUT (P31) terminal. The synchronous clock used here is as follows:
in master mode, internal clock which is output to the SCLK (P30) terminal while in slave mode, external clock which
is input from the SCLK (P30) terminal.
Shift timing of serial data is as follows:
• When positive polarity (SCPS1 = "0") is selected for the synchronous clock:
The serial data output to the SOUT (P31) terminal changes at the rising edge of the clock input or output from/to
the SCLK (P30) terminal. The data in the shift register is shifted at the rising edge of the SCLK signal when the
SCPS0 register is "0" or at the falling edge of the SCLK signal when the SCPS0 register is "1."
• When negative polarity (SCPS1 = "1") is selected for the synchronous clock:
The serial data output to the SOUT (P31) terminal changes at the falling edge of the clock input or output from/
to the SCLK (P30) terminal. The data in the shift register is shifted at the falling edge of the SCLK signal when
the SCPS0 register is "0" or at the rising edge of the SCLK signal when the SCPS0 register is "1."
When the output of the 8-bit data from SD0 to SD7 is completed, the interrupt factor flag ISIF is set to "1" and an
interrupt occurs. Moreover, the interrupt can be masked by the interrupt mask register EISIF. However, regardless of
the interrupt mask register setting, the interrupt factor flag is set to "1" after output of the 8-bit data.
Serial Data Input Procedure and Interrupt13.6.2
The S1C6F016 serial interface is capable of inputting serial data as parallel data, in units of 8 bits. The serial data is
input from the SIN (P32) terminal, synchronizes with the synchronous clock, and is sequentially read in the 8-bit shift
register. The synchronous clock used here is the internal clock in master mode or the external clock in slave mode.
Shift timing of serial data is as follows:
• When positive polarity (SCPS1 = "0") is selected for the synchronous clock:
The serial data is read into the built-in shift register at the rising edge of the SCLK signal when the SCPS0 register
is "0" or at the falling edge of the SCLK signal when the SCPS0 register is "1." The shift register is sequentially
shifted as the data is fetched.
• When negative polarity (SCPS1 = "1") is selected for the synchronous clock:
The serial data is read into the built-in shift register at the falling edge of the SCLK signal when the SCPS0 regis-
ter is "0" or at the rising edge of the SCLK signal when the SCPS0 register is "1." The shift register is sequentially
shifted as the data is fetched.
When the input of the 8-bit data from SD0 to SD7 is completed, the interrupt factor flag ISIF is set to "1" and an inter-
rupt is generated. Moreover, the interrupt can be masked by the interrupt mask register EISIF. However, regardless of
the interrupt mask register setting, the interrupt factor flag is set to "1" after input of the 8-bit data.
The data input in the shift register can be read from data registers SD[7:0] by software.
13 SERIAL INTERFACE
13-6 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
Serial Data Input/Output Permutation13.6.3
The S1C6F016 allows the input/output permutation of serial data to be selected by the SDP register as to either LSB
first or MSB first. The block diagram showing input/output permutation in case of LSB first and MSB first is provided
in Figure 13.6.3.1. The SDP register should be set before setting data to SD[7:0].
SIN
SIN
Address [FF5CH]
Address [FF5BH] Address [FF5CH]
Address [FF5BH]
Output
latch
Output
latch
SOUT
SOUT
SD3 SD2 SD1 SD0
SD4 SD5 SD6 SD7
SD7 SD6 SD5 SD4
SD0 SD1 SD2 SD3
(LSB first)
(MSB first)
6.3.1 Serial data input/output permutationFigure 13.
SRDY Signal13.6.4
When the S1C6F016 serial interface is used in the slave mode, the SRDY signal is used to indicate whether the inter-
nal serial interface is ready to transmit or receive data for the master side (external) serial device. The SRDY signal
is output from the SRDY (P33) terminal. When using the SRDY output in slave mode, write "1" to the ENCS and
ESREADY registers (this signal cannot be used in SPI slave mode).
Output timing of SRDY signal is as follows:
• When positive polarity (SCPS1 = "0") is selected for the synchronous clock:
The SRDY signal goes "1" (high) when the S1C6F016 serial interface is ready to transmit or receive data; nor-
mally, it is at "0" (low).
The SRDY signal changes from "0" to "1" immediately after "1" is written to SCTRG and returns from "1" to "0"
when "1" is input to the SCLK (P30) terminal (i.e., when the serial input/output begins transmitting or receiving
data). Moreover, when high-order data is read from or written to SD[7:4], the SRDY signal returns to "0."
• When negative polarity (SCPS1 = "1") is selected for the synchronous clock:
The SRDY signal goes "0" (low) when the S1C6F016 serial interface is ready to transmit or receive data; nor-
mally, it is at "1" (high).
The SRDY signal changes from "1" to "0" immediately after "1" is written to SCTRG and returns from "0" to "1"
when "0" is input to the SCLK (P30) terminal (i.e., when the serial input/output begins transmitting or receiving
data). Moreover, when high-order data is read from or written to SD[7:4], the SRDY signal returns to "1."
Timing Chart13.6.5
The S1C6F016 serial interface timing charts are shown in Figure 13.6.5.1.
13 SERIAL INTERFACE
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 13-7
(Rev. 1.1)
SCTRG (W)
SCTRG (R)
SCLK
SIN
8-bit shift register
SOUT
ISIF
SRDY (Slave mode)
(a) When SCPS1 = "0" and SCPS0="0"
(b) When SCPS1 = "0" and SCPS0 = "1"
(c) When SCPS1 = "1" and SCPS0 = "0"
(d) When SCPS1 = "1" and SCPS0 = "1"
SCTRG (W)
SCTRG (R)
SCLK
SIN
8-bit shift register
SOUT
ISIF
SRDY (Slave mode)
SCTRG (W)
SCTRG (R)
SCLK
SIN
8-bit shift register
SOUT
ISIF
SRDY (Slave mode)
SCTRG (W)
SCTRG (R)
SCLK
SIN
8-bit shift register
SOUT
ISIF
SRDY (Slave mode)
6.5.1 Serial interface timing chartFigure 13.
13 SERIAL INTERFACE
13-8 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
Data Transfer in SPI Mode13.7
The serial interface supports serial data transfer in SPI mode.
This mode has the same serial master and slave functions and control method except that the SRDY output cannot
be used when P33 is configured to the SS terminal. Refer to Section 13.4, "Operating mode of serial interface," and
Section 13.6, "Data input/output and interrupt function," for these common descriptions.
SPI slave device
When using the S1C6F016 as an SPI slave device, set the serial interface to SPI slave mode.
ESIF = "1," SMOD = "0," ENCS = "1," ESREADY = "0," ESOUT = "1" (when SOUT is used)
The P33 terminal functions as the SS (Slave Select) signal input terminal.
To perform data transfer in this mode, write "1" to SCTRG to enable the serial interface to transmit/receive data
the same as the slave mode described above. The serial interface starts data transfer when the external master
device outputs the synchronous clock to the SCLK terminal after it asserts the slave select signal (set to low) input
to the SS (P33) terminal. The external device must hold the SS signal (P33 terminal) active while data is being
transferred. When the SS signal is inactive, the serial interface does not start data transfer even if the synchronous
clock is input to the SCLK terminal.
SPI master device
When using the S1C6F016 as an SPI master device, set the serial interface to master mode.
ESIF = "1," SMOD = "1," ENCS = "0," ESREADY = "0," ESOUT = "1" (when SOUT is used)
The SS signal output terminal is not available in master mode, set an I/O port to output mode and use it as the SS
signal output terminal. The SS signal must be set to low before writing "1" to SCTRG and hold that active level
while data is being transferred. After 8-bit data is transmitted/received, set the SS signal to high.
Timing chart
The data transfer timing chart in SPI mode is shown in Figure 13.7.1.
SCTRG (W)
SCTRG (R)
SCLK
SIN
8-bit shift register
SOUT
ISIF
SS input (Slave mode)
SS output (Master mode)
7.1 Timing chart in SPI mode (when SCPS1 = SCPS0 = "0")Figure 13.
Notes: • The S1C6F016 serial interface does not have a transmit buffer and a receive buffer, therefore,
data transfer must be processed in every one-byte transfer. The interrupt factor flag is set after a
transfer for one byte has been completed. A start of data transfer from/to the SPI device cannot
be used as a trigger to start the interrupt handler.
• If the SS signal becomes inactive during data transfer in SPI slave mode or if the master device
outputs the SCLK signal before it asserts the SS signal, the serial interface cannot transmit/
receive data normally.
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I/O Memory of Serial Interface13.8
Table 13.8.1 shows the I/O addresses and the control bits for the serial interface.
8.1 Control bits of serial interfaceTable 13.
Address Register name R/W Default Setting/data Function
FF14H D3 0 (*3) R – (*2) – Unused
D2 SIFCKS2 R/W 0 7 f3/4 4 PT1 1 f1Serial I/F clock frequency selection
(f1 = fOSC1, f3 = fOSC3)
D1 SIFCKS1 R/W 0 6 f3/2 3 f1/4 0 Off/
External
D0 SIFCKS0 R/W 0 5 f32 f1/2
FF58H D3 0 (*3) R – (*2) – Unused
D2 ESOUT R/W 0 1 Enable 0 Disable SOUT enable
D1 SCTRG R/W 0 1 Trigger (W)
Run (R)
0 Invalid (W)
Stop (R)
Serial I/F clock trigger (writing)
Serial I/F clock status (reading)
D0 ESIF R/W 0 1 SIF 0 I/O Serial I/F enable (P3 port function selection)
FF59H D3 SCPS1 R/W 0 3 Negative, ↑1 Positive, ↓ Serial I/F clock format selection
(polarity, phase)
D2 SCPS0 R/W 0 2 Negative, ↓0 Positive, ↑
D1 SDP R/W 0 1 MSB first 0 LSB first Serial I/F data input/output permutation
D0 SMOD R/W 0 1 Master 0 Slave Serial I/F mode selection
FF5AH D3 0 (*3) R – (*2) – Unused
D2 0 (*3) R – (*2) – Unused
D1 ESREADY R/W 0 1 SRDY 0 SS SRDY_SS function selection (ENCS = "1")
D0 ENCS R/W 0 1 SRDY_SS 0 P33 SRDY_SS enable (P33 port function selection)
FF5BH D3 SD3 R/W ×
0H–FH
Serial I/F transmit/receive data
(low-order 4 bits)
SD0 = LSB
D2 SD2 R/W ×
D1 SD1 R/W ×
D0 SD0 R/W ×
FF5CH D3 SD7 R/W ×
0H–FH
Serial I/F transmit/receive data
(high-order 4 bits)
SD7 = MSB
D2 SD6 R/W ×
D1 SD5 R/W ×
D0 SD4 R/W ×
*1: Initial value at initial reset *2: Not set in the circuit *3: Constantly "0" when being read
SIFCKS[2:0]: Serial interface clock frequency select register (FF14H•D[2:0])
Selects the synchronous clock frequency in master mode.
8.2 Serial interface clock frequenciesTable 13.
SIFCKS[2:0] SIF clock (master mode)
7 fOSC3 / 4 *
6 fOSC3 / 2 *
5 fOSC3 / 1 *
4 Programmable timer 1 *
3 fOSC1 / 4 (8 kHz)
2 fOSC1 / 2 (16 kHz)
1 fOSC1 / 1 (32 kHz)
0 Off (slave mode) *
fOSC1: OSC1 oscillation frequency. ( ) indicates the frequency when fOSC1 = 32 kHz.
fOSC3: OSC3 oscillation frequency
* The maximum clock frequency is limited to 1 MHz.
When programmable timer 1 is selected, the programmable timer 1 underflow signal is divided by 2 before it is
used as the synchronous clock. In this case, the programmable timer must be controlled before operating the serial
interface. Refer to the "Programmable Timer" chapter for controlling the programmable timer.
Fix at "0" in slave mode.
At initial reset, this register is set to "0."
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ESIF: Serial interface enable register (P3 port function selection) (FF58H•D0)
Sets P30–P33 to the input/output port for the serial interface.
When "1" is written: Serial interface
When "0" is written: I/O port
Reading: Valid
When "1" is written to the ESIF register, P30, P31, P32 and P33 function as SIN, SOUT, SCLK and SRDY or
SS, respectively. In slave mode, the P33 terminal functions as SRDY output or SS input terminal, while in master
mode, it functions as the I/O port terminal.
At initial reset, this register is set to "0."
SCTRG: Clock trigger/status (FF58H•D1)
This is a trigger to start input/output of synchronous clock (SCLK).
When writing
When "1" is written: Trigger
When "0" is written: No operation
When this trigger is supplied to the serial interface activating circuit, the synchronous clock (SCLK) input/output
is started. As a trigger condition, it is required that data writing or reading on data registers SD[7:0] be performed
prior to writing "1" to SCTRG. (The internal circuit of the serial interface is initiated through data writing/reading
on data registers SD[7:0].) In addition, be sure to enable the serial interface with the ESIF register before setting
the trigger. Supply trigger only once every time the serial interface is placed in the RUN state. Refrain from per-
forming trigger input multiple times, as leads to malfunctioning. Moreover, when the synchronous clock SCLK
is external clock, start to input the external clock after the trigger.
When reading
When "1" is read: RUN (during input/output the synchronous clock)
When "0" is read: STOP (the synchronous clock stops)
When this bit is read, it indicates the status of serial interface clock. After "1" is written to SCTRG, this value is
latched till serial interface clock stops (8 clock counts). Therefore, if "1" is read, it indicates that the synchronous
clock is in input/output operation. When the synchronous clock input/output is completed, this latch is reset to
"0."
At initial reset, this bit is set to "0."
ESOUT: SOUT enable register (FF58H•D2)
Enables serial data output from the P31 port.
When "1" is written: Enabled (SOUT)
When "0" is written: Disabled (I/O port)
Reading: Valid
When serial data output is not used, the SOUT output can be disabled to use P31 as an I/O port. When performing
serial output, write "1" to ESOUT to set P31 as the SOUT output port. At initial reset, this register is set to "0."
SMOD: Operating mode select register (FF59H•D0)
Selects the serial interface operating mode from master mode and slave mode.
When "1" is written: Master mode
When "0" is written: Slave mode
Reading: Valid
In master mode, the serial interface uses the internal clock (selected in the clock manager) as the synchronous
clock for serial transfer. The synchronous clock is also output from the SCLK (P30) terminal to control the ex-
ternal serial interface (slave device). In slave mode, the serial interface inputs the synchronous clock that is sent
by the external serial interface (master device) from the SCLK terminal to perform serial transfer. Master mode
is selected by writing "1" to SMOD, and slave mode is selected by writing "0."
At initial reset, this register is set to "0."
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SDP: Data input/output permutation select register (FF59H•D1)
Selects the serial data input/output permutation.
When "1" is written: MSB first
When "0" is written: LSB first
Reading: Valid
Select whether the data input/output permutation will be MSB first or LSB first. At initial reset, this register is set
to "0."
SCPS[1:0]: Clock format select register (FF59H•D[3:2])
Selects the timing for reading in the serial data input from the SIN (P32) terminal.
8.3 Configuration of synchronous clock formatTable 13.
SCPS[1:0] Polarity Phase
3 Negative (SCLK) Rising edge (↑)
2 Negative (SCLK) Falling edge (↓)
1 Positive (SCLK) Falling edge (↓)
0 Positive (SCLK) Rising edge (↑)
• When positive polarity (SCPS1 = "0") is selected for the synchronous clock:
During receiving, the serial data is read into the built-in shift register at the rising edge of the SCLK signal when
the SCPS0 register is "0" or at the falling edge of the SCLK signal when the SCPS0 register is "1." The shift
register is sequentially shifted as the data is fetched.
During transmitting, the serial data output to the SOUT (P31) terminal changes at the rising edge of the clock
input or output from/to the SCLK (P30) terminal. The data in the shift register is shifted at the rising edge of the
SCLK signal when the SCPS0 register is "0" or at the falling edge of the SCLK signal when the SCPS0 register
is "1."
• When negative polarity (SCPS1 = "1") is selected for the synchronous clock:
During receiving, the serial data is read into the built-in shift register at the falling edge of the SCLK signal when
the SCPS0 register is "0" or at the rising edge of the SCLK signal when the SCPS0 register is "1." The shift reg-
ister is sequentially shifted as the data is fetched.
During transmitting, the serial data output to the SOUT (P31) terminal changes at the falling edge of the clock
input or output from/to the SCLK (P30) terminal. The data in the shift register is shifted at the falling edge of the
SCLK signal when the SCPS0 register is "0" or at the rising edge of the SCLK signal when the SCPS0 register
is "1."
At initial reset, this register is set to "0."
ENCS: SRDY_SS enable register (P33 port function selection) (FF5AH•D0)
Enables the serial interface function of P33. Use this register with ESREADY.
When "1" is written: Enabled (Serial interface)
When "0" is written: Disabled (I/O port)
Reading: Valid
When ENCS is enabled, the P33 terminal can be used as SRDY output or SS input terminal in slave mode (SMOD
= "0"). At initial reset, this register is set to "0."
ESREADY: SRDY_SS function select register (FF5AH•D1)
Selects the P33 port function when ENCS = "1."
When "1" is written: SRDY output
When "0" is written: SS input
Reading: Valid
The P33 port function can be selected from SRDY output and SS input in slave mode (SMOD = "0"). At initial
reset, this register is set to "0."
13 SERIAL INTERFACE
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8.4 Selecting P33 port functionTable 13.
Slave mode: SMOD="0" Master mode: SMOD="1"
ESREADY ENCS P33 terminal ESREADY ENCS P33 terminal
*0 P33 (I/O) *0 P33 (I/O)
0 1 SS (I) 0 1 P33 (I/O)
1 1 SRDY (O) 1 1 Prohibited
SD[7:0]: Serial interface data register (FF5CH, FF5BH)
These registers are used for writing and reading serial data.
When writing
When "1" is written: High level
When "0" is written: Low level
Write data to be output in these registers. The register data is converted into serial data and output from the SOUT
(P31) terminal; data bits set at "1" are output as high (VDD) level and data bits set at "0" are output as low (VSS)
level.
When reading
When "1" is read: High level
When "0" is read: Low level
The serial data input from the SIN (P32) terminal can be read from these registers. The serial data input from the
SIN (P32) terminal is converted into parallel data, as a high (VDD) level bit into "1" and as a low (VSS) level bit
into "0," and is loaded to these registers. Perform data reading only while the serial interface is not running (i.e.,
the synchronous clock is neither being input or output). At initial reset, these registers are undefined.
Precautions13.9
• Perform data writing/reading to the data registers SD[7:0] only while the serial interface is not running (i.e., the
synchronous clock is neither being input or output).
• As a trigger condition, it is required that data writing or reading on data registers SD[7:0] be performed prior to
writing "1" to SCTRG. (The internal circuit of the serial interface is initiated through data writing/reading on data
registers SD[7:0].) In addition, be sure to enable the serial interface with the ESIF register before setting the trig-
ger.
Supply trigger only once every time the serial interface is placed in the RUN state. Refrain from performing trigger
input multiple times, as leads to malfunctioning. Moreover, when the synchronous clock SCLK is external clock,
start to input the external clock after the trigger.
• Setting of the input/output permutation (MSB first/LSB first) with the SDP register should be done before setting
data to SD[7:0].
• Be aware that the maximum clock frequency for the serial interface is limited to 1 MHz when the programmable
timer is used as the clock source or the serial interface is used in slave mode.
14 LCD DRIVER
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LCD Driver14
Configuration of LCD Driver14.1
The S1C6F016 has 8 common terminals (COM0–COM7) and 56 segment terminals (SEG0–SEG55), so that it can
drive an LCD panel with a maximum of 448 dots (56 × 8). The driving method is 1/3, 1/4, 1/5, 1/6, 1/7 or 1/8 duty
dynamic drive with three drive voltages (1/3 bias), VC1, VC2 and VC3. LCD display can be controlled (turned on and
off) by software.
Mask Option14.2
SEG/GPIO/RFC Terminal Configuration 14.2.1
Custom mask option
The SEG0 to SEG35 terminals are fixed at segment output.
The SEG36 to SEG55 terminals are shared with I/O port or R/F converter, and each terminal can be set to the
function to be used by mask option.
2.1.1 SEG/GPIO/RFC terminal configuration optionTable 14.
Function 1
(GPIO/RFC terminal)
Function 2
(SEG terminal)
P40 SEG36
P41 SEG37
P42 SEG38
P43 SEG39
P30/SCLK SEG40
P31/SOUT SEG41
P32/SIN SEG42
P33/SRDY_SS SEG43
P20 SEG44
P21 SEG45
P22/EVIN_B SEG46
P23/TOUT_B SEG47
P50/RFOUT SEG48
P51/SEN0 SEG49
P52/REF0 SEG50
P53/RFIN0 SEG51
RFIN1 SEG52
REF1 SEG53
SEN1 SEG54
HUD SEG55
Standard mask option Type B
The SEG0 to SEG35 terminals can only be used for segment outputs. The maximum number of dots that can be
driven is 288 dots (36 × 8). The SEG36 to SEG55 terminals are not available, as they are all configured to the I/O
port and R/F converter terminals.
The SEG0 to SEG35 terminals cannot be used for DC outputs.
Standard mask option Type E
All the SEG0 to SEG55 terminals can only be used for segment outputs. The maximum number of dots that can
be driven is 448 dots (56 × 8). The R/F converter, serial interface and P20 to P53 I/O ports cannot be used.
The SEG0 to SEG55 terminals cannot be used for DC outputs.
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Standard mask option Type G
The SEG0 to SEG35 terminals can only be used for DC outputs. The SEG36 to SEG55 terminals are not available,
as they are all configured to the I/O port and R/F converter terminals.
The SEG0 to SEG35 terminals cannot be used for segment outputs.
Power Source for LCD Driving14.2.2
Custom mask option
The power source for driving LCD can be selected from the internal power supply and an external power
supply.
When the internal power supply is selected, the internal LCD system voltage regulator is enabled to generate
the LCD drive voltages VC1–VC3. The LCD system voltage regulator starts operating and outputs the LCD drive
voltages VC1–VC3 to the LCD driver when the LPWR register is set to "1." For more information on the LCD
system voltage regulator, refer to the "Power Supply" chapter.
When using an external power supply, select a drive voltage configuration from the following 3 types and supply
the LCD drive voltage to the VC1–VC3 terminals.
1. External power supply 1/3 bias (for 4.5 V panel) VDD = VC2
2. External power supply 1/3 bias (for 3.0 V panel) VDD = VC3
3. External power supply 1/2 bias (for 3.0 V panel) VDD = VC3, VC1 = VC2
For the external connection diagram when an external supply is used, refer to the "Power Supply" chapter.
Note that the power control using the LPWR register is necessary even if an external power supply is used.
Standard mask option Type B and Type E
The internal LCD system voltage regulator is used to generate the LCD drive voltages VC1–VC3. No external
power supply can be used.
Standard mask option Type G
The power source is set to the internal LCD system voltage regulator, but it is not used, as Type G supports DC
output only.
Segment Option14.2.3
Output specification
Custom mask option
The SEG0–SEG55 terminals can be used only for segment signal output. DC output cannot be selected.
Standard mask option Type B
The SEG0–SEG35 terminals can be used only for segment signal output. DC output cannot be selected.
Standard mask option Type E
The SEG0–SEG55 terminals can be used only for segment signal output. DC output cannot be selected.
Standard mask option Type G
The SEG0–SEG35 terminals can be used only for DC output (VDD and VSS binary output). Segment output
cannot be selected. The output specification is fixed at complementary output. Each segment terminal outputs
COM0 data.
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Segment allocation
Note: Segment allocation is not a mask option item. Create segment allocation data that represents corre-
sponding between display memory bits and segment terminals) using the segment option generator
"winsog" and program the Flash EEPROM with the created data.
Custom mask option, standard mask option Type B and Type E
Each data bits (D0–D3) of the display memory addresses (F000H–F07FH) can be allocated to a segment ter-
minal (SEG0–SEG55) individually. This makes design easy by increasing the degree of freedom with which
the LCD panel can be designed.
Figure 14.2.3.1 shows an example of the relationship between the LCD segments (on the panel) and the dis-
play memory for the case of 1/4 duty.
a
fb
g
e
d
c
SEG10 SEG11
COM0
COM1
COM2
Display memory allocation
Pin address allocation
COM3
Address
F010H
F011H
Data bit
D3
d
p
D2
c
g
D1
b
f
D0
a
c
SEG10
SEG11
COM0
11, D1
(f)
10, D0
(a)
COM1
11, D0
(e)
11, D2
(g)
COM2
10, D2
(c)
10, D1
(b)
COM3
10, D3
(d)
11, D3
(p)
p
2.3.1 Segment allocationFigure 14.
Standard mask option Type G
Each data bits (D0–D3) of the display memory addresses (F000H–F07FH) can be allocated to a segment
terminal (SEG0–SEG35) individually. The terminals output the contents of the address/bit corresponding to
COM0, so it is not necessary to allocate addresses/bits to COM1–COM7.
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2.3.1 Segment option (standard mask option Type B)Table 14.
Pin
name
Address (F0xxH)
Output specificationCOM0 COM1 COM2 COM3 COM4 COM5 COM6 COM7
HLDHLDHLDHLDHLDHLDHLDHLD
SEG0 n S C N
SEG1 n S C N
SEG2 n S C N
SEG3 n S C N
SEG4 n S C N
SEG5 n S C N
SEG6 n S C N
SEG7 n S C N
SEG8 n S C N
SEG9 n S C N
SEG10 n S C N
SEG11 n S C N
SEG12 n S C N
SEG13 n S C N
SEG14 n S C N
SEG15 n S C N
SEG16 n S C N
SEG17 n S C N
SEG18 n S C N
SEG19 n S C N
SEG20 n S C N
SEG21 n S C N
SEG22 n S C N
SEG23 n S C N
SEG24 n S C N
SEG25 n S C N
SEG26 n S C N
SEG27 n S C N
SEG28 n S C N
SEG29 n S C N
SEG30 n S C N
SEG31 n S C N
SEG32 n S C N
SEG33 n S C N
SEG34 n S C N
SEG35 n S C N
SEG36 n S C N
SEG37 n S C N
SEG38 n S C N
SEG39 n S C N
SEG40 n S C N
SEG41 n S C N
SEG42 n S C N
SEG43 n S C N
SEG44 n S C N
SEG45 n S C N
SEG46 n S C N
SEG47 n S C N
SEG48 n S C N
SEG49 n S C N
SEG50 n S C N
SEG51 n S C N
SEG52 n S C N
SEG53 n S C N
SEG54 n S C N
SEG55 n S C N
<address> H: RAM data high-order address (0–7) <Output specification> S: Segment output
L: RAM data low-order address (0–F) C: Complementary output
D: Data bit (0–3) N: Nch open drain output
Notes for using the segment option generator "winsog" (standard mask option Type B)
1. Any display memory address can be allocated to SEG0 to SEG35.
2. Always select "LCD segment output (S)" as the output specification of SEG0 to SEG35, as it is fixed at segment
output.
3. Configurations for nonexistent SEG pins (SEG36 to SEG55)
• Always select "LCD segment output (S)" as the output specification of SEG36 to SEG55.
• Leave the address cells for SEG36 to SEG55 blank. (Unused addresses will be allocated.)
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2.3.2 Segment option (standard mask option Type E)Table 14.
Pin
name
Address (F0xxH)
Output specificationCOM0 COM1 COM2 COM3 COM4 COM5 COM6 COM7
HLDHLDHLDHLDHLDHLDHLDHLD
SEG0 n S C N
SEG1 n S C N
SEG2 n S C N
SEG3 n S C N
SEG4 n S C N
SEG5 n S C N
SEG6 n S C N
SEG7 n S C N
SEG8 n S C N
SEG9 n S C N
SEG10 n S C N
SEG11 n S C N
SEG12 n S C N
SEG13 n S C N
SEG14 n S C N
SEG15 n S C N
SEG16 n S C N
SEG17 n S C N
SEG18 n S C N
SEG19 n S C N
SEG20 n S C N
SEG21 n S C N
SEG22 n S C N
SEG23 n S C N
SEG24 n S C N
SEG25 n S C N
SEG26 n S C N
SEG27 n S C N
SEG28 n S C N
SEG29 n S C N
SEG30 n S C N
SEG31 n S C N
SEG32 n S C N
SEG33 n S C N
SEG34 n S C N
SEG35 n S C N
SEG36 n S C N
SEG37 n S C N
SEG38 n S C N
SEG39 n S C N
SEG40 n S C N
SEG41 n S C N
SEG42 n S C N
SEG43 n S C N
SEG44 n S C N
SEG45 n S C N
SEG46 n S C N
SEG47 n S C N
SEG48 n S C N
SEG49 n S C N
SEG50 n S C N
SEG51 n S C N
SEG52 n S C N
SEG53 n S C N
SEG54 n S C N
SEG55 n S C N
<address> H: RAM data high-order address (0–7) <Output specification> S: Segment output
L: RAM data low-order address (0–F) C: Complementary output
D: Data bit (0–3) N: Nch open drain output
Notes for using the segment option generator "winsog" (standard mask option Type E)
1. Any display memory address can be allocated to SEG0 to SEG55.
2. Always select "LCD segment output (S)" as the output specification of SEG0 to SEG55, as it is fixed at segment
output.
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2.3.3 Segment option (standard mask option Type G)Table 14.
Pin
name
Address (F0xxH)
Output specificationCOM0 COM1 COM2 COM3 COM4 COM5 COM6 COM7
HLDHLDHLDHLDHLDHLDHLDHLD
SEG0 S n C N
SEG1 S n C N
SEG2 S n C N
SEG3 S n C N
SEG4 S n C N
SEG5 S n C N
SEG6 S n C N
SEG7 S n C N
SEG8 S n C N
SEG9 S n C N
SEG10 S n C N
SEG11 S n C N
SEG12 S n C N
SEG13 S n C N
SEG14 S n C N
SEG15 S n C N
SEG16 S n C N
SEG17 S n C N
SEG18 S n C N
SEG19 S n C N
SEG20 S n C N
SEG21 S n C N
SEG22 S n C N
SEG23 S n C N
SEG24 S n C N
SEG25 S n C N
SEG26 S n C N
SEG27 S n C N
SEG28 S n C N
SEG29 S n C N
SEG30 S n C N
SEG31 S n C N
SEG32 S n C N
SEG33 S n C N
SEG34 S n C N
SEG35 S n C N
SEG36 n S C N
SEG37 n S C N
SEG38 n S C N
SEG39 n S C N
SEG40 n S C N
SEG41 n S C N
SEG42 n S C N
SEG43 n S C N
SEG44 n S C N
SEG45 n S C N
SEG46 n S C N
SEG47 n S C N
SEG48 n S C N
SEG49 n S C N
SEG50 n S C N
SEG51 n S C N
SEG52 n S C N
SEG53 n S C N
SEG54 n S C N
SEG55 n S C N
<address> H: RAM data high-order address (0–7) <Output specification> S: Segment output
L: RAM data low-order address (0–F) C: Complementary output
D: Data bit (0–3) N: Nch open drain output
Notes for using the segment option generator "winsog" (standard mask option Type G)
1. Any display memory address can be allocated to SEG0 to SEG35. Leave the address cells for COM1 to COM7
blank, as Type G supports DC output only.
2. Always select "Complementary output (C)" as the output specification of SEG0 to SEG35, as it is fixed at comple-
mentary output.
3. Configurations for nonexistent SEG pins (SEG36 to SEG55)
• Always select "LCD segment output (S)" as the output specification of SEG36 to SEG55.
• Leave the address cells for SEG36 to SEG55 blank. (Unused addresses will be allocated.)
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2.3.4 Segment option (custom mask option)Table 14.
Pin
name
Address (F0xxH)
Output specificationCOM0 COM1 COM2 COM3 COM4 COM5 COM6 COM7
HLDHLDHLDHLDHLDHLDHLDHLD
SEG0 n S C N
SEG1 n S C N
SEG2 n S C N
SEG3 n S C N
SEG4 n S C N
SEG5 n S C N
SEG6 n S C N
SEG7 n S C N
SEG8 n S C N
SEG9 n S C N
SEG10 n S C N
SEG11 n S C N
SEG12 n S C N
SEG13 n S C N
SEG14 n S C N
SEG15 n S C N
SEG16 n S C N
SEG17 n S C N
SEG18 n S C N
SEG19 n S C N
SEG20 n S C N
SEG21 n S C N
SEG22 n S C N
SEG23 n S C N
SEG24 n S C N
SEG25 n S C N
SEG26 n S C N
SEG27 n S C N
SEG28 n S C N
SEG29 n S C N
SEG30 n S C N
SEG31 n S C N
SEG32 n S C N
SEG33 n S C N
SEG34 n S C N
SEG35 n S C N
SEG36 n S C N
SEG37 n S C N
SEG38 n S C N
SEG39 n S C N
SEG40 n S C N
SEG41 n S C N
SEG42 n S C N
SEG43 n S C N
SEG44 n S C N
SEG45 n S C N
SEG46 n S C N
SEG47 n S C N
SEG48 n S C N
SEG49 n S C N
SEG50 n S C N
SEG51 n S C N
SEG52 n S C N
SEG53 n S C N
SEG54 n S C N
SEG55 n S C N
<address> H: RAM data high-order address (0–7) <Output specification> S: Segment output
L: RAM data low-order address (0–F) C: Complementary output
D: Data bit (0–3) N: Nch open drain output
Notes for using the segment option generator "winsog" (custom mask option)
1. Any display memory address can be allocated to SEG0 to SEG55.
2. Always select "LCD segment output (S)" as the output specification of SEG0 to SEG55.
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LCD Display Control14.3
Selecting Display Mode14.3.1
In addition to the LPWR register for turning the display on and off, the DSPC[1:0] register is provided to select a
display mode. There are three display modes available as shown in Table 14.3.1.1.
3.1.1 Display modeTable 14.
DSPC[1:0] Display mode
3 All on mode
2 All off mode
1 All on mode
0 Normal mode
Normal mode: The display memory contents are output without being processed.
All on mode: All the LCD segments go on. The SEG terminals output an on waveform. The contents in the display
memory are not modified.
All off mode: All the LCD segments go off. The SEG terminals output an off waveform. The contents in the display
memory are not modified. (default)
Switching Drive Duty14.3.2
In the S1C6F016, the drive duty can be selected from six types (1/3 to 1/8) using the LDUTY[2:0] register.
3.2.1 Drive duty settingsTable 14.
LDUTY[2:0] Drive duty Common terminals used Max. number of segments
7 1/8 COM0–COM7 448 (56 × 8)
6 1/7 COM0–COM6 392 (56 × 7)
5 1/8 COM0–COM7 448 (56 × 8)
4 1/7 COM0–COM6 392 (56 × 7)
3 1/6 COM0–COM5 336 (56 × 6)
2 1/5 COM0–COM4 280 (56 × 5)
1 1/4 COM0–COM3 224 (56 × 4)
0 1/3 COM0–COM2 168 (56 × 3)
Switching Frame Frequency14.3.3
The frame frequency is determined by the selected drive duty and the clock supplied from the clock manager. The
clock to be supplied (16 Hz, 21.3 Hz, or 32 Hz) can be selected using the FLCKS[1:0] register. Selecting a low frame
frequency can reduce current consumption.
3.3.1 Frame frequency settingsTable 14.
FLCKS[1:0] Source clock 1/8 duty 1/7 duty 1/6 duty 1/5 duty 1/4 duty 1/3 duty
3 Prohibited
2 16.0 Hz 16.0 Hz 18.3 Hz 21.3 Hz 12.8 Hz 16.0 Hz 21.3 Hz
1 21.3 Hz 21.3 Hz 24.4 Hz 28.5 Hz 17.1 Hz 21.3 Hz 28.5 Hz
0 32.0 Hz 32.0 Hz 36.6 Hz 42.7 Hz 25.6 Hz 32.0 Hz 42.7 Hz
(When fOSC1 = 32.768 kHz)
Notes: • Be sure to turn the display off (LPWR = "0") before switching the frame frequency.
• The frame frequency affects the display quality. We recommend that the frame frequency should
be determined after the display quality is evaluated using the actual LCD panel.
Drive Waveform14.3.4
The drive waveforms by duty selection are shown in Figures 14.3.4.1 to 14.3.4.6.
14 LCD DRIVER
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 14-9
(Rev. 1.1)
COM0
COM1
COM2
COM3–7
LCD lighting status
SEGxx
VC3
VC2
VC1
VSS
VC3
VC2
VC1
VSS
VC2
VC1
VC2
VC1 Not lit
Lit
COM0
COM1
COM2
SEGxx
Frame
• • •
3.4.1 LCD drive waveform for 1/3 dutyFigure 14.
14 LCD DRIVER
14-10 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
COM0
COM1
COM2
COM3
COM4–7
LCD lighting status
SEGxx
VC3
VC2
VC1
VSS
VC3
VC2
VC1
VSS
VC2
VC1
VC2
VC1
Not lit
Lit
COM0
COM1
COM2
COM3
SEGxx
Frame
• • •
3.4.2 LCD drive waveform for 1/4 dutyFigure 14.
14 LCD DRIVER
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 14-11
(Rev. 1.1)
COM0
COM1
COM2
COM3
COM4
COM5–7
SEGxx
VC3
VC2
VC1
VSS
VC3
VC2
VC1
VSS
VC2
VC1
VC2
VC1
Not lit
Lit
COM0
COM1
COM2
COM3
COM4
SEGxx
Frame
• • •
LCD lighting status
3.4.3 LCD drive waveform for 1/5 dutyFigure 14.
14 LCD DRIVER
14-12 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
COM0
COM1
COM2
COM3
COM4
COM5
COM6–7
SEGxx
VC3
VC2
VC1
VSS
VC3
VC2
VC1
VSS
VC2
VC1
Not lit
Lit
COM0
COM1
COM2
COM3
COM4
COM5
SEGxx
Frame
• • •
VC2
VC1
LCD lighting status
3.4.4 LCD drive waveform for 1/6 dutyFigure 14.
14 LCD DRIVER
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 14-13
(Rev. 1.1)
COM0
COM1
COM2
COM3
COM4
COM5
COM6
COM7
SEGxx
VC3
VC2
VC1
VSS
VC3
VC2
VC1
VSS
VC2
VC1
Not lit
Lit
LCD lighting status
SEGxx
Frame
• • •
COM0
COM1
COM2
COM3
COM4
COM5
COM6
VC2
VC1
3.4.5 LCD drive waveform for 1/7 dutyFigure 14.
14 LCD DRIVER
14-14 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
COM0
COM1
COM2
COM3
COM4
COM5
COM6
COM7
SEGxx
VC3
VC2
VC1
VSS
VC3
VC2
VC1
VSS
VC2
VC1
Not lit
Lit
SEGxx
Frame
• • •
LCD lighting status
COM0
COM1
COM2
COM3
COM4
COM5
COM6
COM7
3.4.6 LCD drive waveform for 1/8 dutyFigure 14.
14 LCD DRIVER
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 14-15
(Rev. 1.1)
Static Drive14.3.5
The LCD driver allows the software to set static drive.
To set in static drive, write "1" to the STCD register. Then, by writing "1" to any one of COM0 to COM7 (display
memory) corresponding to the SEG terminal, the SEG terminal outputs a static on waveform. When all the COM0 to
COM7 bits are set to "0," the SEG terminal outputs an off waveform.
Figure 14.3.5.1 shows the static drive waveform.
COM0–7
Frame frequency
-VC3
-VC2
-VC1
-VSS
-VC3
-VC2
-VC1
-VSS
-VC3
-VC2
-VC1
-VSS
SEGxx
LCD lighting status
COM0
COM1
:
COM7
:
:
SEGxx
Not lit Lit
3.5.1 Static drive waveformFigure 14.
Note: The static drive function uses all COM outputs (COM0 to COM7) even if a duty other than 1/8 is
selected. Hence, for static drive, set the same value for all display memory corresponding to COM0
to COM7.
LCD Contrast Adjustment14.3.6
The S1C6F016 allows software to adjust the LCD contrast. This function is realized by controlling the voltages
VC1, VC2 and VC3 output from the LCD system voltage regulator. The contrast can be adjusted to 16 levels using the
LC[3:0] register as shown in Table 14.3.6.1.
3.6.1 LCD contrastTable 14.
LC[3:0] Contrast
FH Level 15 (dark)
EH Level 14 ↑
DH Level 13
CH Level 12
BH Level 11
AH Level 10
9H Level 9
8H Level 8
7H Level 7
6H Level 6
5H Level 5
4H Level 4
3H Level 3
2H Level 2
1H Level 1 ↓
0H Level 0 (light)
At initial reset, LC[3:0] is set to "0." The software should initialize the register to set to the desired contrast.
When an external power supply is selected by mask option, the LCD contrast cannot be adjusted using LC[3:0].
14 LCD DRIVER
14-16 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
Display Memory14.4
The display memory is located to F000H–F07FH in the data memory area and each data bit can be allocated to an
segment terminal (SEG0–SEG55) by programming the Flash EEPROM with the segment assignment data created
using the segment option generator "winsog." When a bit in the display memory is set to "1," the corresponding LCD
segment goes on, and when it is set to "0," the segment goes off.
At initial reset, the data memory contents become undefined hence, there is need to initialize by software.
The addresses that are not used for LCD display can be used as general-purpose registers.
I/O Memory of LCD Driver14.5
Table 14.5.1 shows the I/O addresses and the control bits for the LCD driver. Figure 14.5.1 shows the display memory
map.
5.1 Control bits of LCD driverTable 14.
Address Register name R/W Default Setting/data Function
FF12H D3 FLCKS1 R/W 0 3 – 1 21.3 Frame frequency (Hz) selection
D2 FLCKS0 R/W 0 2 16.0 0 32.0
D1 VCCKS1 R/W 0 3 – 1 2048 VC boost frequency (Hz) selection
D0 VCCKS0 R/W 0 2 – 0 Off
FF50H D3 0 (*3) R – (*2) – Unused
D2 0 (*3) R – (*2) – Unused
D1 DSPC1 R/W 1 3 All on 1 All on LCD display mode selection
D0 DSPC0 R/W 0 2 All off 0 Normal
FF51H D3 STCD R/W 0 1 Static 0 Dynamic LCD drive mode switch
D2 LDUTY2 R/W 0 7 1/8 4 1/7 1 1/4 LCD drive duty selection
D1 LDUTY1 R/W 0 6 1/7 3 1/6 0 1/3
D0 LDUTY0 R/W 0 5 1/8 2 1/5
FF52H D3 LC3 R/W 0
0H(light)–FH(dark)
LCD contrast adjustment
D2 LC2 R/W 0
D1 LC1 R/W 0
D0 LC0 R/W 0
*1: Initial value at initial reset *2: Not set in the circuit *3: Constantly "0" when being read
Address
Base
Low 0123456789ABCDEF
F000H
F010H
F020H
F030H
F040H
F050H
F060H
F070H
Display memory (128 words × 4 bits)
R/W
5.1 Display memory mapFigure 14.
FLCKS[1:0]: Frame frequency select register (FF12H•D[3:2])
Selects the frequency of the frame clock supplied from the clock manager.
5.2 Frame frequency settingsTable 14.
FLCKS[1:0] Source clock 1/8 duty 1/7 duty 1/6 duty 1/5 duty 1/4 duty 1/3 duty
3 Prohibited
2 16.0 Hz 16.0 Hz 18.3 Hz 21.3 Hz 12.8 Hz 16.0 Hz 21.3 Hz
1 21.3 Hz 21.3 Hz 24.4 Hz 28.5 Hz 17.1 Hz 21.3 Hz 28.5 Hz
0 32.0 Hz 32.0 Hz 36.6 Hz 42.7 Hz 25.6 Hz 32.0 Hz 42.7 Hz
(When fOSC1 = 32.768 kHz)
At initial reset, this register is set to "0."
Notes: • Be sure to turn the display off (LPWR = "0") before switching the frame frequency.
• The frame frequency affects the display quality. We recommend that the frame frequency should
be determined after the display quality is evaluated using the actual LCD panel.
14 LCD DRIVER
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 14-17
(Rev. 1.1)
DSPC[1:0]: LCD display mode select register (FF50H•D[1:0])
Sets the display mode.
5.3 Display modeTable 14.
DSPC[1:0] Display mode
3 All on mode
2 All off mode
1 All on mode
0 Normal mode
Normal mode: The display memory contents are output without being processed.
All on mode: All the LCD segments go on. The SEG terminals output an on waveform. The contents in the
display memory are not modified.
All off mode: All the LCD segments go off. The SEG terminals output an off waveform. The contents in the
display RAM are not modified. (default)
At initial reset, this register is set to "2."
LDUTY[2:0]: LCD drive duty select register (FF51H•D[2:0])
Selects the LCD drive duty.
5.4 Drive duty settingsTable 14.
LDUTY[2:0] Drive duty Common terminals used Max. number of segments
7 1/8 COM0–COM7 448 (56 × 8)
6 1/7 COM0–COM6 392 (56 × 7)
5 1/8 COM0–COM7 448 (56 × 8)
4 1/7 COM0–COM6 392 (56 × 7)
3 1/6 COM0–COM5 336 (56 × 6)
2 1/5 COM0–COM4 280 (56 × 5)
1 1/4 COM0–COM3 224 (56 × 4)
0 1/3 COM0–COM2 168 (56 × 3)
At initial reset, this register is set to "0."
STCD: LCD drive switch register (FF51H•D3)
Switches the LCD driving method.
When "1" is written: Static drive
When "0" is written: Dynamic drive
Reading: Valid
By writing "1" to STCD, static drive is selected, and dynamic drive is selected when "0" is written.
At initial reset, this register is set to "0."
Note: The static drive function uses all COM outputs (COM0 to COM7) even if a duty other than 1/8 is
selected. Hence, for static drive, set the same value for all display memory corresponding to COM0
to COM7.
LC[3:0]: LCD contrast adjustment register (FF52H)
Adjusts the LCD contrast.
LC[3:0] = 0H light
: :
LC[3:0] = FH dark
When the LCD drive voltage is supplied from outside by mask option selection, this adjustment becomes invalid.
At initial reset, this register is set to 0.
14 LCD DRIVER
14-18 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
Precautions14.6
• Be sure to turn the display off (LPWR = "0") before switching the frame frequency.
• The frame frequency affects the display quality. We recommend that the frame frequency should be determined
after the display quality is evaluated using the actual LCD panel.
• At initial reset, the contents of display memory are undefined and LC[3:0] (LCD contrast) is set to "0," therefore,
it is necessary to initialize those contents by software. Also note that the LPWR and DSPC[1:0] registers are set to
turn the display off.
• When Pxx (P20 to P53) and R/F converter terminals are used as the segment terminals by selecting mask option,
do not alter the Pxx port and R/F converter control registers that affect these terminals from their initial values.
15 SOUND GENERATOR
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 15-1
(Rev. 1.1)
Sound Generator15
Configuration of Sound Generator15.1
The S1C6F016 has a built-in sound generator for generating a buzzer signal. Hence, the generated buzzer signal can
be output from the BZ terminal. Aside permitting the respective setting of the buzzer signal frequency and sound level
to 8 stages, it permits the adding of a digital envelope by means of duty ratio control. It also has a one-shot output
function for outputting key operated sounds. Figure 15.1.1 shows the configuration of the sound generator.
fOSC1
fOSC1/128
SGCKE
Clock
manager
BZ (P12) terminal
Programmable
dividing circuit
One-shot buzzer
control circuit
Duty ratio
control circuit
BZFQ[2:0] BDTY[2:0]
Buzzer output
control circuit
Envelope
addition circuit
ENON
BZE
ENRTM
ENRST
BZSTP
BZSHT
SHTPW
1.1 Configuration of sound generatorFigure 15.
Note: If the BZ terminal is used to drive an external component that consumes a large amount of current
such as a bipolar transistor, design the pattern of traces on the printed circuit board so that the
operation of the external component does not affect the IC power supply. Refer to "Precautions on
Mounting" in Appendix for more information.
Controlling Operating Clock15.2
To generate the buzzer signal, the clock for the sound generator must be supplied from the clock manager by writing
"1" to the SGCKE register in advance.
2.1 Controlling sound generator clockTable 15.
SGCKE Sound generator clock
1 Programmable dividing circuit input clock: fOSC1 (32 kHz)
One-shot buzzer control circuit input clock: fOSC1 / 128 (256 Hz)
0 Off
If it is not necessary to run the sound generator, stop the clock supply by setting SGCKE to "0" to reduce current
consumption.
Buzzer Output Control15.3
The BZ signal generated by the sound generator is output from the BZ (P12) terminal by setting "1" for the buzzer output
enable register BZE. The I/O control register IOC12 and data register P12 settings are ineffective while the BZ signal is
being output. When BZE is set to "0," the P12 port is configured as a general-purpose DC input/output port.
BZE register
BZ output (P12 terminal)
"1""0" "0"
3.1 Buzzer signal output timing chartFigure 15.
Note: Since it generates the buzzer signal that is out of synchronization with the BZE register, hazards
may at times be produced when the signal goes on/off due to the setting of the BZE register.
15 SOUND GENERATOR
15-2 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
Buzzer Frequency and Sound Level Settings15.4
The divided signal of the OSC1 oscillation clock (32.768 kHz) is used for the buzzer signal and it is set up such that 8
types of frequencies can be selected by changing this division ratio. Frequency selection is done by setting the buzzer
frequency select register BZFQ[2:0] as shown in Table 15.4.1.
4.1 Buzzer signal frequency settingTable 15.
BZFQ[2:0] Buzzer frequency (Hz)
0 4096.0
1 3276.8
2 2730.7
3 2340.6
4 2048.0
5 1638.4
6 1365.3
7 1170.3
The buzzer sound level is changed by controlling the duty ratio of the buzzer signal.
The duty ratio can be selected from among the 8 types shown in Table 15.4.2 according to the setting of the buzzer
duty select register BDTY[2:0].
4.2 Duty ratio settingTable 15.
Level BDTY[2:0]
Duty ratio by buzzer frequency (Hz)
4096.0 3276.8 2730.7 2340.6
2048.0 1638.4 1365.3 1170.3
Level 1 (Max.) 0 8/16 8/20 12/24 12/28
Level 2 1 7/16 7/20 11/24 11/28
Level 3 2 6/16 6/20 10/24 10/28
Level 4 3 5/16 5/20 9/24 9/28
Level 5 4 4/16 4/20 8/24 8/28
Level 6 5 3/16 3/20 7/24 7/28
Level 7 6 2/16 2/20 6/24 6/28
Level 8 (Min.) 7 1/16 1/20 5/24 5/28
When the high level output time has been made TH and when the low level output time has been made TL due to the
ratio of the pulse width to the pulse synchronization, the duty ratio becomes TH/(TH+TL). When BDTY[2:0] have
all been set to "0," the duty ratio becomes maximum and the sound level also becomes maximum. Conversely, when
BDTY[2:0] have all been set to "1," the duty ratio becomes minimum and the sound level also becomes minimum.
The duty ratio that can be set is different depending on the frequency that has been set, so see Table 15.4.2.
Level 1 (Max.)
Level 2
Level 3
Level 4
Level 5
Level 6
Level 7
Level 8 (Min.)
TL TH
4.1 Duty ratio of the buzzer signal waveformFigure 15.
Note: When a digital envelope has been added to the buzzer signal, the BDTY[2:0] settings will be invalid
due to the control of the duty ratio.
15 SOUND GENERATOR
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 15-3
(Rev. 1.1)
Digital Envelope 15.5
A digital envelope for duty control can be added to the buzzer signal.
The envelope can be controlled by staged changing of the same duty envelope as detailed in Table 15.4.2 in the pre-
ceding item from level 1 (maximum) to level 8 (minimum). The addition of an envelope to the buzzer signal can be
done by writing "1" into ENON, but when "0" has been written it is not added.
When a buzzer signal output is begun (writing "1" into BZE) after setting ENON, the duty ratio shifts to level 1
(maximum) and changes in stages to level 8. When attenuated down to level 8 (minimum), it is retained at that level.
The duty ratio can be returned to maximum, by writing "1" into register ENRST during output of an envelope at-
tached buzzer signal.
The envelope attenuation time (time for changing of the duty ratio) can be selected by the register ENRTM. The time
for a 1 stage level change is 62.5 msec (16 Hz), when "0" has been written into ENRTM and 125 msec (8 Hz), when
to "1" has been written. However, there is also a max. 4 msec error from envelope ON, up to the first change.
Figure 15.5.1 shows the timing chart of the digital envelope.
BZFQ[2:0]
ENON
ENRST
ENRTM
BZE
t01
t02
t03
t04
t05
t06
t07
t01 t11
t12 t13 t14 t15 t16 t17
Level 1 (Max.)
2
3
4
5
6
7
8 (Min.)
BZ signal
duty ratio
No change of duty level
t01
t02–07
= 62.5 msec
= 62.5 msec
+0
–4 t11
t12–17
= 125 msec
= 125 msec
+0
–4
5.1 Timing chart for digital envelopeFigure 15.
One-shot output 15.6
The sound generator has a one-shot output function for outputting a short duration buzzer signal for key operation
sounds and similar effects. Either 125 msec or 31.25 msec can be selected by SHTPW register for one-shot buzzer
signal output time.
The output of the one-shot buzzer is controlled by writing "1" into the one-shot buzzer trigger BZSHT. When this
trigger has been assigned, a buzzer signal in synchronization with the internal 256 Hz signal is output from the buzzer
output terminal. Thereafter, when the set time has elapsed, a buzzer signal in synchronization with the 256 Hz signal
goes off in the same manner as for the start of output.
The BZSHT also permits reading. When BZSHT is "1," the one-shot output circuit is in operation (during one-shot
output) and when it is "0," it shows that the circuit is in the ready to output status.
In addition, it can also terminate one-shot output prior to the elapsing of the set time. This is done by writing a "1"
into the one-shot buzzer stop BZSTP. In this case as well, the buzzer signal goes off in synchronization with the 256
Hz signal.
When "1" is written to BZSHT again during a one-shot output, a new one-shot output for 125 msec or 31.25 msec
starts from that point (in synchronization with the 256 Hz signal).
The one-shot output cannot add an envelope for short durations. However, the sound level can be set by selecting the
duty ratio, and the frequency can also be set.
One-shot output is invalid during normal buzzer output (during BZE = "1").
Figure 15.6.1 shows timing chart for one-shot output.
15 SOUND GENERATOR
15-4 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
256 Hz
SHTPW
BZSHT (W)
BZSHT (R)
BZSTP
BZ output
6.1 Timing chart for one-shot outputFigure 15.
I/O Memory of Sound Generator15.7
Table 15.7.1 shows the I/O addresses and the control bits for the sound generator.
7.1 Control bits of sound generatorTable 15.
Address Register name R/W Default Setting/data Function
FF16H D3 MDCKE R/W 0 1 Enable 0 Disable Integer multiplier clock enable
D2 SGCKE R/W 0 1 Enable 0 Disable Sound generator clock enable
D1 SWCKE R/W 0 1 Enable 0 Disable Stopwatch timer clock enable
D0 RTCKE R/W 0 1 Enable 0 Disable Clock timer clock enable
FF44H D3 ENRTM R/W 0 1 1 sec 0 0.5 sec Envelope releasing time selection
D2 ENRST (*3) W (Reset) 1 Reset 0 Invalid Envelope reset (writing)
D1 ENON R/W 0 1 On 0 Off Envelope On/Off
D0 BZE R/W 0 1 Enable 0 Disable Buzzer output enable
FF45H D3 0 (*3) R – (*2) – Unused
D2 BZSTP (*3) W 0 1 Stop 0 Invalid 1-shot buzzer stop (writing)
D1 BZSHT R/W 0 1 Trigger (W)
Busy (R)
0 Invalid (W)
Ready (R)
1-shot buzzer trigger (writing)
1-shot buzzer status (reading)
D0 SHTPW R/W 0 1 125 msec 0 31.25 msec 1-shot buzzer pulse width setting
FF46H D3 0 (*3) R – (*2) – Unused
D2 BZFQ2 R/W 0 7 1170.3 4 2048.0 1 3276.8 Buzzer frequency (Hz) selection
D1 BZFQ1 R/W 0 6 1365.3 3 2340.6 0 4096.0
D0 BZFQ0 R/W 0 5 1638.4 2 2730.7
FF47H D3 0 (*3) R – (*2) – Unused
D2 BDTY2 R/W 0 7 Level 8 4 Level 5 1 Level 2 Buzzer signal duty ratio selection
D1 BDTY1 R/W 0 6 Level 7 3 Level 4 0 Level 1
(max.)
D0 BDTY0 R/W 0 5 Level 6 2 Level 3
*1: Initial value at initial reset *2: Not set in the circuit *3: Constantly "0" when being read
SGCKE: Sound generator clock enable register (FF16H•D2)
Controls the clock supply to the sound generator.
When "1" is written: On
When "0" is written: Off
Reading: Valid
When "1" is written to SGCKE, the sound generator operating clock is supplied from the clock manager. If it is
not necessary to run the sound generator, stop the clock supply by setting SGCKE to "0" to reduce current con-
sumption. At initial reset, this register is set to "0."
BZE: Buzzer output enable register (FF44H•D0)
Controls the buzzer signal output.
When "1" is written: Buzzer output On
When "0" is written: Buzzer output Off
Reading: Valid
When "1" is written to BZE, the BZ signal is output from the BZ (P12) terminal. The I/O control register IOC12
and data register P12 settings are ineffective while the BZ signal is being output. When BZE is set to "0," the P12
port is configured as a general-purpose DC input/output port. At initial reset, this register is set to "0."
15 SOUND GENERATOR
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 15-5
(Rev. 1.1)
ENON: Envelope On/Off control register (FF44H•D1)
Controls the addition of an envelope onto the buzzer signal.
When "1" is written: On
When "0" is written: Off
Reading: Valid
Writing "1" to ENON causes an envelope to be added during buzzer signal output. When "0" has been written,
an envelope is not added. At initial reset, this register is set to "0."
ENRST: Envelope reset (FF44H•D2)
Resets the envelope.
When "1" is written: Reset
When "0" is written: No operation
Reading: Always "0"
Writing "1" to ENRST resets envelope and the duty ratio becomes maximum. If an envelope has not been added
(ENON = "0") and if no buzzer signal is being output, the reset becomes invalid. Writing "0" is also invalid. This
bit is dedicated for writing, and is always "0" for reading.
ENRTM: Envelope releasing time select register (FF44H•D3)
Selects the envelope releasing time that is added to the buzzer signal.
When "1" is written: 1.0 sec (125 msec × 7 = 875 msec)
When "0" is written: 0.5 sec (62.5 msec × 7 = 437.5 msec)
Reading: Valid
The releasing time of the digital envelope is determined by the time for converting the duty ratio. When "1" is
written to ENRTM, it becomes 125 msec (8 Hz) units and when "0" is written, it becomes 62.5 msec (16 Hz)
units. At initial reset, this register is set to "0."
SHTPW: One-shot buzzer pulse width setting register (FF45H•D0)
Selects the output time of the one-shot buzzer.
When "1" is written: 125 msec
When "0" is written: 31.25 msec
Reading: Valid
Writing "1" to SHTPW causes the one-short output time to be set at 125 msec, and writing "0" causes it to be set
to 31.25 msec. It does not affect normal buzzer output. At initial reset, this register is set to "0."
BZSHT: One-shot buzzer trigger/status (FF45H•D1)
Controls the one-shot buzzer output.
When writing
When "1" is written: Trigger
When "0" is written: No operation
Writing "1" to BZSHT causes the one-short output circuit to operate and a buzzer signal to be output. This output
is automatically turned off after the time set by SHTPW has elapsed. The one-shot output is only valid when the
normal buzzer output is off (BZE = "0") and will be invalid when the normal buzzer output is on (BZE = "1").
When a re-trigger is assigned during a one-shot output, the one-shot output time set with SHTPW is measured
again from that point (time extension).
When reading
When "1" is read: BUSY
When "0" is read: READY
During reading BZSHT shows the operation status of the one-shot output circuit. During one-shot output, BZSHT
becomes "1" and the output goes off, it shifts to "0."
At initial reset, this bit is set to "0."
15 SOUND GENERATOR
15-6 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
BZSTP: One-shot buzzer stop (FF45H•D2)
Stops the one-shot buzzer output.
When "1" is written: Stop
When "0" is written: No operation
Reading: Always "0"
Writing "1" to BZSTP permits the one-shot buzzer output to be turned off prior to the elapsing of the time set by
SHTPW. Writing "0" is invalid and writing "1" is also invalid except during one-shot output. This bit is dedicated
for writing, and is always "0" for reading.
BZFQ[2:0]: Buzzer frequency select register (FF46H•D[2:0])
Selects the buzzer signal frequency.
7.2 Buzzer signal frequency settingTable 15.
BZFQ[2:0] Buzzer frequency (Hz)
0 4096.0
1 3276.8
2 2730.7
3 2340.6
4 2048.0
5 1638.4
6 1365.3
7 1170.3
Select the buzzer frequency from among the above 8 types that have divided the oscillation clock. At initial reset,
this register is set to "0."
BDTY[2:0]: Duty level select register (FF47H•D[2:0])
Selects the duty ratio of the buzzer signal as shown in Table 15.7.3.
7.3 Duty ratio settingTable 15.
Level BDTY[2:0]
Duty ratio by buzzer frequency (Hz)
4096.0 3276.8 2730.7 2340.6
2048.0 1638.4 1365.3 1170.3
Level 1 (Max.) 0 8/16 8/20 12/24 12/28
Level 2 1 7/16 7/20 11/24 11/28
Level 3 2 6/16 6/20 10/24 10/28
Level 4 3 5/16 5/20 9/24 9/28
Level 5 4 4/16 4/20 8/24 8/28
Level 6 5 3/16 3/20 7/24 7/28
Level 7 6 2/16 2/20 6/24 6/28
Level 8 (Min.) 7 1/16 1/20 5/24 5/28
The sound level of this buzzer can be set by selecting this duty ratio. However, when the envelope has been set to
on (ENON = "1"), this setting becomes invalid. At initial reset, this register is set to "0."
Precautions15.8
• Since it generates a buzzer signal that is out of synchronization with the BZE register, hazards may at times be
produced when the signal goes on/off due to the setting of the BZE register.
• The one-shot output is only valid when the normal buzzer output is off (BZE = "0") and will be invalid when the
normal buzzer output is on (BZE = "1").
16 INTEGER MULTIPLIER
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 16-1
(Rev. 1.1)
Integer Multiplier16
Configuration of Integer Multiplier16.1
The S1C6F016 has a built-in unsigned-integer multiplier. This multiplier performs 8 bits × 8 bits of multiplication or
16 bits ÷ 8 bits of division and returns the results and three flag states.
Figure 16.1.1 shows the configuration of the integer multiplier.
Clock
manager
System clock
Flag
(NF/VF/ZF)
Destination register
High-order byte (DRH) Low-order byte (DRL)
Data bus
Operation
control
(CALMD)
Source register
(SR)
Temporary
register B
Temporary
register A
Adder
1.1 Configuration of the integer multiplierFigure 16.
Controlling Clock Manager16.2
The integer multiplier operates with the clock supplied by the clock manager (CPU operating clock selected by OSCC
and CLKCHG). Before the integer multiplier can be run, write "1" to the MDCKE register to supply the operating
clock to the integer multiplier.
2.1 Controlling integer multiplier clockTable 16.
MDCKE Integer multiplier clock
1 When CLKCHG = "0": fOSC1 (32 kHz)
When OSCC = 1," CLKCHG = "1": fOSC3
0 Off
If it is not necessary to run the integer multiplier, stop the clock supply by setting MDCKE to "0" to reduce current
consumption.
Multiplication Mode16.3
To perform a multiplication, set the multiplier to the source register (SR) and the multiplicand to the low-order 8 bits
(DRL) of the destination register, then write "0" to the calculation mode select register (CALMD). The multiplication
takes 10 CPU clock cycles from writing "0" to CALMD until the 16-bit product is loaded into the destination register
(DRH and DRL). At the same time the result is loaded, the operation flags (NF, VF and ZF) are updated. The follow-
ing shows the conditions that change the operation flag states and examples of multiplication.
N flag: Set when the MSB of DRH is "1" and reset when it is "0."
V flag: Always reset after a multiplication.
Z flag: Set when the 16-bit value in DRH/DRL is 0000H and reset when it is not 0000H.
<Examples of multiplication>
DRL (multiplicand) SR (multiplier) DRH/DRL (product) NF VF ZF
00H 64H 0000H 0 0 1
64H 58H 2260H 0 0 0
C8H 58H 44C0H 0 0 0
C8H A5H 80E8H 1 0 0
16 INTEGER MULTIPLIER
16-2 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
Division Mode16.4
To perform a division, set the divisor to the source register (SR) and the dividend to the destination register (DRH
and DRL), then write "1" to the calculation mode select register (CALMD). The division takes 10 CPU clock cycles
from writing "1" to CALMD until the quotient is loaded into the low-order 8 bits (DRL) of the destination register
and the remainder is loaded into the high-order 8 bits (DRH) of the destination register. At the same time the result is
loaded, the operation flags (NF, VF and ZF) are updated. However, when an overflow results (if the quotient exceeds
the 8-bit range), the destination register (DRH and DRL) does not change its contents as it maintains the dividend.
The following shows the conditions that change the operation flag states and examples of division.
N flag: Set when the MSB of DRL is "1" and reset when it is "0."
V flag: Set when the quotient exceeds the 8-bit range and reset when it is within the 8-bit range.
Z flag: Set when the 8-bit value in DRL is 00H and reset when it is not 00H.
<Examples of division>
DRH/DRL (dividend) SR (divisor) DRL (quotient) DRH (remainder) NF VF ZF
1A16H 64H 42H 4EH 0 0 0
332CH 64H 83H 00H 1 0 0
0000H 58H 00H 00H 0 0 1
2468H 13H 68H 24H 1 1 0
In the example of "2468H" ÷ "13H" shown above, DRH/DRL maintains the dividend because the quotient overflows
the 8-bit. To get the correct results when an overflow has occurred, perform the division with two steps as shown
below.
1. Divide the high-order 8 bits of the dividend (24H) by the divisor (13H) and then store the quotient (01H) to
memory.
DRH/DRL (dividend) SR (divisor) DRL (quotient) DRH (remainder) NF VF ZF
0024H 13H 01H 11H 0 0 0
2. Keep the remainder (11H) in DRH and load the low-order 8 bits of the dividend (68H) to DRL, then perform
division again.
DRH/DRL (dividend) SR (divisor) DRL (quotient) DRH (remainder) NF VF ZF
1168H 13H EAH 0AH 1 0 0
The correct result is obtained as the quotient = 01EAH (the first and second results of DRL are merged) and the
remainder = 0AH. However, since the operation flags (NF/VF/ZF) are changed in each step, they cannot indicate the
states according to the final operation results.
Note: Make sure that the division results are correct using software as the hardware does not check.
Execution Cycle16.5
Both the multiplication and division take 10 CPU cycles for an operation. Therefore, before the results can be read
from the destination register DRH/DRL, wait at least 5 bus cycles after writing to CALMD. The same applies to
reading the operation flags NF/VF/ZF. The following shows a sample program.
ldb %ext, src_data@h
ldb %xl, src_data@l ; Set RAM address for operand
ldb %ext, au@h
ldb %yl, au@l ; Set multiplier I/O memory address
;
ldb %ba, [%x]+
ldb [%y]+, %ba ; Set data to SR
ldb %ba, [%x]+
ldb [%y]+, %ba ; Set data to DRL
ldb %ba, [%x]+
ldb [%y]+, %ba ; Set data to DRH
;
ld [%y], 0b0001 ; Start operation (select division mode)
;
16 INTEGER MULTIPLIER
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 16-3
(Rev. 1.1)
ldb %ext, rslt_data@h
ldb %xl, rslt_data@l ; Set result store address
nop
nop
nop ;
Dummy instructions to wait end of operation
;
bit [%y], 0b0100
jrnz overflow ; Jump to error routine if VF = "1"
;
add %y, -4 ; Set DRL again
;
ldb %ba, [%y]+
ldb [%x]+, %ba ; Store result (quotient) into RAM
ldb %ba, [%y]+
ldb [%x]+, %ba ; Store result (remainder) into RAM
I/O Memory of Integer Multiplier16.6
Table 16.6.1 shows the I/O addresses and the control bits for the integer multiplier.
6.1 Control bits of integer multiplierTable 16.
Address Register name R/W Default Setting/data Function
FF16H D3 MDCKE R/W 0 1 Enable 0 Disable Integer multiplier clock enable
D2 SGCKE R/W 0 1 Enable 0 Disable Sound generator clock enable
D1 SWCKE R/W 0 1 Enable 0 Disable Stopwatch timer clock enable
D0 RTCKE R/W 0 1 Enable 0 Disable Clock timer clock enable
FF70H D3 SR3 R/W ×
0H–FH
Source register (low-order 4 bits)
SR0 = LSB
D2 SR2 R/W ×
D1 SR1 R/W ×
D0 SR0 R/W ×
FF71H D3 SR7 R/W ×
0H–FH
Source register (high-order 4 bits)
SR7 = MSB
D2 SR6 R/W ×
D1 SR5 R/W ×
D0 SR4 R/W ×
FF72H D3 DRL3 R/W ×
0H–FH
Low-order 8-bit destination register
(low-order 4 bits)
DRL0 = LSB
D2 DRL2 R/W ×
D1 DRL1 R/W ×
D0 DRL0 R/W ×
FF73H D3 DRL7 R/W ×
0H–FH
Low-order 8-bit destination register
(high-order 4 bits)
DRL7 = MSB
D2 DRL6 R/W ×
D1 DRL5 R/W ×
D0 DRL4 R/W ×
FF74H D3 DRH3 R/W ×
0H–FH
High-order 8-bit destination register
(low-order 4 bits)
DRH0 = LSB
D2 DRH2 R/W ×
D1 DRH1 R/W ×
D0 DRH0 R/W ×
FF75H D3 DRH7 R/W ×
0H–FH
High-order 8-bit destination register
(high-order 4 bits)
DRH7 = MSB
D2 DRH6 R/W ×
D1 DRH5 R/W ×
D0 DRH4 R/W ×
FF76H D3 NF R 0 1 Negative 0 Positive Negative flag
D2 VF R 0 1 Overflow 0 No Overflow flag
D1 ZF R 0 1 Zero 0 No Zero flag
D0 CALMD R/W 0 1 Division (W)
Run (R)
0 Multiplication (W)
Stop (R)
Calculation mode selection (writing)
Operation status (reading)
*1: Initial value at initial reset *2: Not set in the circuit *3: Constantly "0" when being read
16 INTEGER MULTIPLIER
16-4 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
MDCKE: Integer multiplier clock enable register (FF16H•D3)
Controls the operating clock supply to the integer multiplier.
When "1" is written: On
When "0" is written: Off
Reading: Valid
When "1" is written to MDCKE, the integer multiplier operating clock (CPU operating clock selected by OSCC
and CLKCHG) is supplied from the clock manager. If it is not necessary to run the integer multiplier, stop the
clock supply by setting MDCKE to "0" to reduce current consumption. At initial reset, this register is set to "0."
SR[7:0]: Source register (FF71H, FF70H)
Used to set multipliers and divisors.
Set the low-order 4 bits of data to SR[3:0] and the high-order 4 bits to SR[7:4]. This register maintains the latest
set value until the next writing, so it is not necessary to set data for each operation if the same multiplier and
divisor is used in a series of operations. At initial reset, this register is undefined.
DRL[7:0]: Destination register low-order 8 bits (FF73H, FF72H)
Used to set multiplicands and low-order 8 bits of dividends.
Set the low-order 4 bits of data to DRL[3:0] and the high-order 4 bits to DRL[7:4]. Data written to this register
is loaded to the arithmetic circuit when an operation starts (by writing to FF76H•D0), and then a multiplication
or a division is performed in 10 CPU clock cycles (5 bus cycles). After the operation has finished, the low-order
8 bits of the product or the quotient are loaded to this register. However, if an overflow occurs in a division pro-
cess, the quotient is not loaded and the low-order 8 bits of the dividend remains. At initial reset, this register is
undefined.
DRH[7:0]: Destination register high-order 8 bits (FF75H, FF74H)
Used to set high-order 8 bits of dividends.
Set the low-order 4 bits of data to DRH[3:0] and the high-order 4 bits to DRH[7:4].
At the start of a multiplication (by writing "0" to FF76H•D0), the contents in this register are ignored. After 10
CPU cycles (5 bus cycles) of multiplication process has finished, the high-order 8 bits of the product are loaded in
this register. In a division process, data written to this register is loaded to the arithmetic circuit when an operation
starts (by writing "1" to FF76H•D0), and then a division is performed in 10 CPU clock cycles (5 bus cycles). After
the operation has finished, the remainder is loaded to this register. However, if an overflow occurs in a division
process, the remainder is not loaded and the high-order 8 bits of the dividend remains. At initial reset, this register
is undefined.
CALMD: Calculation mode select register/operation status (FF76H•D0)
Selects multiplication or division mode and starts operation.
When "1" is written: Selects/starts division
When "0" is written: Selects/starts multiplication
When "1" is read: Under operating
When "0" is read: Operation has finished
Writing to this register starts the specified operation. After that, this register is set to "1" and returns to "0" when
the multiplication or division process has finished.
At initial reset, this register is reset to "0."
ZF: Zero flag (FF76H•D1)
Indicates whether the operation result is zero or not.
When "1" is read: Zero
When "0" is read: Not zero
Writing: Invalid
ZF is a read-only bit, so writing operation is invalid. At initial reset, this flag is set to "0."
16 INTEGER MULTIPLIER
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 16-5
(Rev. 1.1)
VF: Overflow flag (FF76H•D2)
Indicates whether an overflow has occurred or not in a division process.
When "1" is read: Overflow occurred
When "0" is read: Overflow has not occurred
Writing: Invalid
When a multiplication process has finished, this flag is always set to "0." VF is a read-only bit, so writing opera-
tion is invalid. At initial reset, this flag is set to "0."
NF: Negative flag (FF76H•D3)
Indicates whether the operation result is a positive value or a negative value.
When "1" is read: Negative value (MSB of the results is "1")
When "0" is read: Positive value (MSB of the results is "0")
Writing: Invalid
NF is a read-only bit, so writing operation is invalid. At initial reset, this flag is set to "0."
Precautions16.7
An operation process takes 10 CPU clock cycles (5 bus cycles) after writing to the calculation mode select register
CALMD until the operation result is set to the destination register DRH/DRL and the operation flags. While this
operation is in process, do not read/write from/to the destination register DRH/DRL and do not read NF/VF/ZF.
17 R/F CONVERTER
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 17-1
(Rev. 1.1)
R/F Converter17
Configuration of R/F Converter17.1
The S1C6F016 has a built-in CR oscillation type R/F converter that can be used as an A/D converter. Two systems
(channel 0 and channel 1) of CR oscillation circuits are built into the R/F converter, so it is possible to compose two
types of R/F conversion circuits by connecting different sensors to each CR oscillation circuit. Channel 0 can be used
as an R/F (Resistor/Frequency) conversion circuit using a DC bias resistive sensor such as a thermistor, and channel 1
can be used as an R/F conversion circuit the same as channel 0, or for an AC bias resistive sensor such as a humidity
sensor. The channel to be used and sensor type for channel 1 are selected with software. Resistance value (relative
value to external reference resistance) of the resistive sensor that has been connected to the sensor input terminal is
converted into frequency by the CR oscillation circuit and the number of clocks is counted in the built-in measure-
ment counter. By reading the value of the measurement counter, it can obtain the data after digitally-converting the
value detected by the sensor. Various sensor circuits such as temperature/humidity measurement circuits can be easily
realized using this R/F converter.
The configuration of the R/F converter is shown in Figure 17.1.1.
VDD
VSS
OSC3 oscillation
circuit (fOSC3)
OSC1 oscillation
circuit (fOSC1)
R/F converter
clock (fTCCLK)
Measurement
counter
clock (fMCCLK)
REF0
(P52)
SEN0
(P51)
RFIN0
(P53)
Interrupt
request
Ch. 0 oscillation control circuit
REF1
VDD
VSS
SEN1HUDRFIN1
Ch. 1 oscillation control circuit
Measurement counter
Time base counter
Data bus
Interrupt
control
OVTC
OVMC
MC00
–MC03
MC04
–MC07
MC08
–MC11
RFRUNR
RFRUNS
Clock
manager
Measurement
counter control
Channel
control circuit
MC12
–MC15
Time base
counter
control
TC00
–TC03
TC04
–TC07
TC08
–TC11
TC12
–TC15
MC16
–MC19
TC16
–TC19
RFOUT
(P50)
RFCKS[2:0]
ERF[1:0]
Programmable timer 1
underflow signal
1.1 Configuration of R/F converterFigure 17.
Controlling Operating Clock17.2
The R/F converter uses the clock supplied from the clock manager as its operating clock and the count clock for the
time base counter. The clock manager generates six R/F converter clocks by dividing the OSC1 and OSC3 clocks.
The R/F converter clock can be selected from seven types (the above six clocks and the programmable timer 1 output
clock). Use the RFCKS[2:0] register to select one of them as shown in Table 17.2.1.
17 R/F CONVERTER
17-2 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
2.1 R/F converter clock frequenciesTable 17.
RFCKS[2:0] RFC clock
7 fOSC3 / 4
6 fOSC3 / 2
5 fOSC3 / 1
4 Programmable timer 1
3 fOSC1 / 4 (8 kHz)
2 fOSC1 / 2 (16 kHz)
1 fOSC1 / 1 (32 kHz)
0 Off
fOSC1: OSC1 oscillation frequency. ( ) indicates the frequency when fOSC1 = 32 kHz.
fOSC3: OSC3 oscillation frequency
When programmable timer 1 is selected, the programmable timer 1 underflow signal is divided by 2 before it is used
as the R/F converter clock. In this case, the programmable timer must be controlled before operating the serial inter-
face. Refer to the "Programmable Timer" chapter for controlling the programmable timer.
If it is not necessary to run the R/F converter, stop the clock supply by setting RFCKS[2:0] to "0" to reduce current
consumption.
Connection Terminals and CR Oscillation Circuit17.3
The R/F converter channel 0 input/output terminals and the RFOUT output terminal are shared with the I/O port
(P50–P53), and the terminal functions must be switched with software when using these terminals for the R/F con-
verter.
By setting the ERF[1:0] register to other than "0," P53, P52 and P51 are configured as the RFIN0, REF0 and SEN0
terminals, respectively.
The RFOUT output through the P50 port is effective when "1" is written to the RFOUT register. When the RFOUT
register is "0," P50 is used as an I/O port.
The table below lists the correspondence between the P50 to P53 terminals and the R/F converter input/output.
3.1 Setting input/output terminal functionsTable 17.
Terminal name R/F converter input/output
P50 RFOUT
P51 SEN0
P52 REF0
P53 RFIN0
Note: At initial reset, P50 to P53 are configured as the I/O ports.
When using the R/F converter channel 0, switch the terminal functions (ERF[1:0] = "1," RFOUT =
"1") in the initialize routine.
Two systems of CR oscillation circuits, channel 0 and channel 1, are built into the R/F converter and perform CR
oscillation with the external resistor and capacitor.
The counter that is used to obtain R/F converted values is shared with channel 0 and channel 1. Therefore, operation
for two channels is realized by switching the CR oscillation circuit that performs R/F conversion. The channel to
perform R/F conversion and the sensor type should be selected using the ERF[1:0] register in advance.
3.2 Selecting channel and sensor typeTable 17.
ERF[1:0] Channel and sensor type
3 Ch.1 DC
2 Ch.1 AC
1 Ch.0 DC
0 I/O
DC: R/F conversion using a DC bias resistive sensor such as a thermistor
AC: R/F conversion using an AC bias resistive sensor such as a humidity sensor
17 R/F CONVERTER
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 17-3
(Rev. 1.1)
(1) R/F conversion using a DC bias resistive sensor such as a thermistor
Channel 0 supports this conversion method only, and channel 1 is selected into this method by setting ERF[1:0]
to "3." This method should be selected for R/F conversion using a normal resistive sensor (DC bias), such as
temperature measurement using a thermistor. At initial reset, channel 1 is set into this conversion method.
Figure 17.3.1 shows the connection diagram of external elements.
RSEN
RREF
VSS
CRFC
RSEN
RREF
Open
CRFC
SEN0
(P51)
REF0
(P52)
RFIN0
(P53)
Channel 0 VSS
SEN1
HUD
REF1
RFIN1
Channel 1
RSEN:
RREF:
CRFC:
Resistive sensor (e.g. thermistor)
Reference resistor
Oscillating capacitor
3.1 Connection diagram in case of R/F conversionFigure 17.
CR oscillation waveforms are shaped by the schmitt trigger and sent to the measurement counter. The clock sent
to the measurement counter is also output from the RFOUT terminal while the sensor is oscillating. As a result,
the oscillation frequency can be measured by an oscilloscope or other equipment. Since this monitor has no effect
on oscillation frequency, it can be used to adjust R/F conversion accuracy. Oscillation waveforms and waveforms
output from the RFOUT terminal are shown in Figure 17.3.2.
RFIN0/1 terminal
RFOUT output
(Measurement counter clock)
VDD
VSS
VDD
VSS
3.2 Oscillation waveformFigure 17.
(2) R/F conversion using an AC bias resistive sensor such as a humidity sensor
This conversion is possible only in channel 1, and this method is selected by setting ERF[1:0] to "2." This is basi-
cally the same as the R/F conversion described above (1), but the AC bias circuit works for a sensor (e.g. humidity
sensor) to which DC bias cannot be applied for a long time. The oscillating operation by reference resistance
is the same as the R/F conversion described above (1). Figure 17.3.3 shows the connection diagram of external
devices.
VSS
SEN1
HUD
REF1
RFIN1
Channel 1
RSEN
RREF
CRFC RSEN:
RREF:
CRFC:
Resistive sensor (e.g. humidity sensor)
Reference resistor
Oscillating capacitor
2.3 Connection diagram of resistive humidity sensorFigure 17.
The oscillation waveform is the same as Figure 17.3.2.
17 R/F CONVERTER
17-4 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
Operation of R/F Conversion17.4
Counter
The R/F converter incorporates two types of counters: measurement counter MC[19:0] and time base counter
TC[19:0]. The measurement counter is a 20-bit up counter that counts the CR oscillation clock with the reference
resistance or sensor selected by software. The R/F conversion results can be obtained by reading this counter. The
time base counter is a 20-bit up/down counter to equal both oscillation times for the reference resistance and the
sensor. The time base counter uses the R/F converter clock selected by the RFCKS[2:0] register. Each counter
permits reading and writing on a 4-bit basis.
First start an R/F conversion for the reference resistance. The measurement counter starts counting up and the
time base counter starts counting down. The counters stop counting when the measurement counter overflows
("FFFFFH" → "00000H"). By resetting the time base counter to "00000H" before starting an R/F conversion for
the reference resistance, the reference oscillation time will be obtained from the time base counter.
Then start an R/F conversion for the sensor, the measurement counter starts counting up from "00000H" and
the time base counter starts counting up from the counted value. The counters stop counting when the time base
counter overflows ("FFFFFH" → "00000H"). The oscillation time in this phase is the same as that of the reference
resistance.
Therefore, by converting an appropriate initial value for counting of the oscillation of the reference resistance
into a complement (value subtracted from "00000H") and setting it into the measurement counter before starting
to count, the number of counts for the sensor oscillation is obtained by reading the measurement counter after the
R/F conversion. In other words, the difference between the reference resistance and sensor oscillation frequencies
can be found easily. For instance, if resistance values of the reference resistance and the sensor are equivalent, the
same value as the initial value before converting into a complement will be obtained as the result.
The time base counter allows reading of the counter value and presetting of data. By saving the counter value after
the reference oscillation has completed into the RAM, the subsequent reference oscillation phase can be omitted.
The sensor oscillation can be started after setting the saved value to the time base counter and "00000H" to the
measurement counter.
Note: When setting the measurement counter or time base counter, always write 5 words of data continu-
ously in order from the lower address (FF62H → FF63H → FF64H → FF65H → FF66H, FF67H →
FF68H → FF69H → FF6AH → FF6BH). Furthermore, an LD instruction should be used for writing
data to the measurement counter and a read-modify-write instruction (AND, OR, ADD, SUB, etc.)
cannot be used. If data other than low-order 4 bits is written, the counter cannot be set to the desired
value.
R/F conversion sequence
An R/F conversion for the reference resistance starts by writing "1" to the RFRUNR register.
However, an initial value must be set to the measurement counter and the time base counter must be cleared to
"00000H" before starting the R/F conversion.
When R/F conversion is initiated by the RFRUNR register, oscillation by the reference resistance begins, and the
measurement counter starts counting up from the initial value by the oscillation clock. The time base counter also
starts counting down by the R/F converter clock.
If the measurement counter becomes "00000H" due to overflow, the oscillation is terminated. At the same time
an interrupt occurs and the RFRUNR register is set to "0," and the R/F converter circuit stops operation com-
pletely.
The time base counter value should be saved into the RAM for R/F conversion of the sensor.
Figure 17.4.1 shows a timing chart for the reference oscillation.
17 R/F CONVERTER
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 17-5
(Rev. 1.1)
Interrupt is generated
R/F converter clock
RFRUNR register
RFIN0/1
Time base counter clock
Time base counter
Measurement counter clock
(RFOUT output)
Measurement counter n *n+1 n+2 FFFFFH 00000H
*: Initial setting value (complement) for counting of reference resistance
00000H
FFFFFH FFFFEH FFFFDH FFFFCH FFFFBH
x+3 x+2 x+1 x
Time base counter starts counting (count-down)
Starts measurement of reference resistance
Measurement counter starts counting
4.1 Reference oscillation timing chartFigure 17.
An R/F conversion for the sensor starts by writing "1" to the RFRUNS register. When performing this sensor
oscillation after a reference oscillation has completed, it is not necessary to set initial values to the counters. If
converting the sensor resistance independently, the measurement counter must be set to "00000H" and the time
base counter must be set to the value measured at the time of a reference oscillation. When R/F conversion is
initiated by the RFRUNS register, oscillation by the sensor begins, and the measurement counter starts counting
up from "00000H" by the oscillation clock. The time base counter also starts counting up by the R/F converter
clock. If the time base counter becomes "00000H," the oscillation is terminated. At the same time an interrupt
occurs and the RFRUNS register is set to "0," and the R/F converter circuit stops operation completely.
Figure 17.4.2 shows a timing chart for the sensor oscillation.
Interrupt is generatedTime up
R/F converter clock
RFRUNS register
RFIN0/1
Time base counter clock
Time base counter
Measurement counter clock
(RFOUT output)
Measurement counter 00000H 00001H 00002H n-1 n *
*: Number of counts during sensor oscillation
x x+1 x+2 x+3 x+4 x+5
FFFFEH FFFFFH
00000H
Time base counter starts counting (count-up)
Starts measurement of sensor
Measurement counter starts counting
4.2 Sensor oscillation timing chart Figure 17.
By the above operation, the sensor is oscillated for the same period of time as the reference resistance is oscillated.
Therefore, the difference in oscillation frequency can be measured from the values counted by the measurement
counter.
Since the reference resistance is oscillated until the measurement counter overflows, an appropriate initial value
needs to be set before R/F conversion is started. If a smaller initial value is set, a longer counting period is pos-
sible, thereby ensuring more accurate detection. Convert the initial value into a complement (value subtracted
from "00000H") before setting it on the measurement counter. Since the data output from the measurement coun-
ter after R/F conversion matches data detected by the sensor, process the difference between that value and the
initial value before it is converted into a complement according to the program and calculate the target value.
The above operations are shown in Figure 17.4.3.
17 R/F CONVERTER
17-6 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
Measurement counter
(MC)
(00000H-n)
(1) Set the initial value 00000H-n 00000H
Count up
FFFFFH
0
0
Count up
:
m
Time base counter
(TC)
00000H
Count down
:
x
x
FFFFFH
00000H
(2) Start reference oscillation
(Set RFRUNR to "1")
(3) Read the measurement counter and process the m - n value by the program
Setting by software
Set the complement of the initial
value n on the measurement counter.
Set "00000H" on the time base counter.
(Set "00000H" on the measurement counter.
Set x on the time base counter.)
Oscillation by
reference resistance
The CR oscillation stops when
the measurement counter overflows
and an interrupt occurs. Save the TC value
into the memory.
When the value of the time base
counter reaches "00000H,"
oscillation and counting stop,
and an interrupt occurs.
Oscillation by
sensor
Count up
Reference oscillation
(1) Set the initial value (00000H) (x)
(2) Start sensor oscillation
(Set RFRUNS to "1")
Sensor oscillation
4.3 Sequence of R/F conversionFigure 17.
Note: Set the initial value of the measurement counter taking into account the measurable range and the
overflow of counters.
Interrupt Function17.5
The R/F converter has a function which allows interrupt to occur when an R/F conversion has completed or an error
has occurred.
When the measurement counter reaches "00000H" during counting of the reference oscillation, both counters stop
counting and RFRUNR is set to "0." At the same time, the interrupt factor flag IRFR is set to "1."
When the time base counter reaches "00000H" during counting of the sensor oscillation, both counters stop counting
and RFRUNS is set to "0." At the same time, the interrupt factor flag IRFS is set to "1."
If the measurement counter overflows during counting of the sensor oscillation, both counters stop counting and
RFRUNS is set to "0." In this case, the interrupt factor flag IRFE is set to "1." At the same time, the OVMC flag is
also set to 1.
If the time base counter overflows during counting of the reference oscillation, both counters stop counting and
RFRUNR is set to "0." In this case, the interrupt factor flag IRFE is set to "1." At the same time, the OVTC flag is
also set to 1.
These interrupt factors allow masking by the interrupt mask registers EIRFR, EIRFS and EIRFE, and an interrupt is
generated to the CPU when these registers are set to "1." When the interrupt mask register is set to "0," an interrupt
is not generated to the CPU even if the interrupt factor flag is set to "1." The interrupt factor flag is reset to "0" by
writing "1."
Timing of interrupt by the R/F converter is shown in Figures 17.5.1 to 17.5.4.
17 R/F CONVERTER
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 17-7
(Rev. 1.1)
n
0
FFFFCH FFFFBH
n+1 n+2 n+3 FFFFD FFFFEH FFFFFH 0
x+3 x+2 x+1 x
FFFFFH FFFFEH FFFFDH
Oscillation by reference resistance
R/F converter clock
RFRUNR register
Time base counter
Measurement counter clock
Measurement counter
IRFR
Interrupt request
Count-down
5.1 Reference oscillate completion interruptFigure 17.
0
x x+4 x+5
123 m-3 m-2 m-1 m
FFFFEH FFFFFH
0x+1 x+2
Oscillation by sensor resistance
R/F converter clock
RFRUNS register
Time base counter
Measurement counter clock
Measurement counter
IRFS
Interrupt request
Count-up
x+3
5.2 Sensor oscillate completion interruptFigure 17.
0
x x+4 x+5
123 FFFFDH FFFFEH FFFFFH 0
y-2 y-1 yx+1 x+2
Oscillation by sensor resistance
R/F converter clock
RFRUNS register
Time base counter
Measurement counter clock
Measurement counter
IRFE, OVMC
Interrupt request
Count-up
x+3
Overflow
5.3 Error interrupt due to measurement counter overflowFigure 17.
n
0
FFFFCH FFFFBH
n+1 n+2 n+3 m-2 m-1 m(≠0) Undefined
3210
FFFFFH FFFFEH
Oscillation by reference resistance
R/F converter clock
RFRUNR register
Time base counter
Measurement counter clock
Measurement counter
IRFE, OVTC
Interrupt request
Count-down
FFFFDH
Overflow
5.4 Error interrupt due to time base counter overflowFigure 17.
Note: When an error interrupt occurs, reset the overflow flag (OVMC or OVTC) by writing "1." The same
error interrupt will occur again if the overflow flag is not reset.
17 R/F CONVERTER
17-8 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
Continuous Oscillation Function17.6
By setting the RFCNT register to "1," the reference oscillation or sensor oscillation can be continued even if the
stop condition has been met. This function with RFOUT enabled allows easy measurement of the CR oscillation
frequency.
I/O Memory of R/F Converter17.7
Table 17.7.1 shows the I/O addresses and the control bits for the R/F converter.
7.1 Control bits of R/F converterTable 17.
Address Register name R/W Default Setting/data Function
FF15H D3 0 (*3) R – (*2) – Unused
D2 RFCKS2 R/W 0 7 f3/4 4 PT1 1 f1R/F converter clock frequency selection
(f1 = fOSC1, f3 = fOSC3)
D1 RFCKS1 R/W 0 6 f3/2 3 f1/4 0 Off
D0 RFCKS0 R/W 0 5 f32 f1/2
FF60H D3 RFCNT R/W 0 1 Continuous 0 Normal Continuous oscillation enable
D2 RFOUT R/W 0 1 Enable 0 Disable RFOUT enable
D1 ERF1 R/W 0 3 Ch.1 DC 1 Ch.0 DC R/F conversion selection
D0 ERF0 R/W 0 2 Ch.1 AC 0 I/O
FF61H D3 OVTC R/W 0 1 Overflow error 0 No error Time base counter overflow flag
D2 OVMC R/W 0 1 Overflow error 0 No error Measurement counter overflow flag
D1 RFRUNR R/W 0 1 Run 0 Stop Reference oscillation Run control/status
D0 RFRUNS R/W 0 1 Run 0 Stop Sensor oscillation Run control/status
FF62H D3 MC3 R/W ×
0H–FH
Measurement counter MC0–MC3
MC0 = LSB
D2 MC2 R/W ×
D1 MC1 R/W ×
D0 MC0 R/W ×
FF63H D3 MC7 R/W ×
0H–FH
Measurement counter MC4–MC7
D2 MC6 R/W ×
D1 MC5 R/W ×
D0 MC4 R/W ×
FF64H D3 MC11 R/W ×
0H–FH
Measurement counter MC8–MC11
D2 MC10 R/W ×
D1 MC9 R/W ×
D0 MC8 R/W ×
FF65H D3 MC15 R/W ×
0H–FH
Measurement counter MC12–MC15
D2 MC14 R/W ×
D1 MC13 R/W ×
D0 MC12 R/W ×
FF66H D3 MC19 R/W ×
0H–FH
Measurement counter MC16–MC19
MC19 = MSB
D2 MC18 R/W ×
D1 MC17 R/W ×
D0 MC16 R/W ×
FF67H D3 TC3 R/W ×
0H–FH
Time base counter TC0–TC3
TC0 = LSB
D2 TC2 R/W ×
D1 TC1 R/W ×
D0 TC0 R/W ×
FF68H D3 TC7 R/W ×
0H–FH
Time base counter TC4–TC7
D2 TC6 R/W ×
D1 TC5 R/W ×
D0 TC4 R/W ×
FF69H D3 TC11 R/W ×
0H–FH
Time base counter TC8–TC11
D2 TC10 R/W ×
D1 TC9 R/W ×
D0 TC8 R/W ×
FF6AH D3 TC15 R/W ×
0H–FH
Time base counter TC12–TC15
D2 TC14 R/W ×
D1 TC13 R/W ×
D0 TC12 R/W ×
FF6BH D3 TC19 R/W ×
0H–FH
Time base counter TC16–TC19
TC19 = MSB
D2 TC18 R/W ×
D1 TC17 R/W ×
D0 TC16 R/W ×
*1: Initial value at initial reset *2: Not set in the circuit *3: Constantly "0" when being read
17 R/F CONVERTER
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 17-9
(Rev. 1.1)
RFCKS[2:0]: R/F converter clock frequency select register (FF15H•D[2:0])
Selects the R/F converter clock frequency.
7.2 R/F converter clock frequenciesTable 17.
RFCKS[2:0] RFC clock
7 fOSC3 / 4
6 fOSC3 / 2
5 fOSC3 / 1
4 Programmable timer 1
3 fOSC1 / 4 (8 kHz)
2 fOSC1 / 2 (16 kHz)
1 fOSC1 / 1 (32 kHz)
0 Off
fOSC1: OSC1 oscillation frequency. ( ) indicates the frequency when fOSC1 = 32 kHz.
fOSC3: OSC3 oscillation frequency
When programmable timer 1 is selected, the programmable timer 1 underflow signal is divided by 2 before it is
used as the R/F converter clock. In this case, the programmable timer must be controlled before operating the R/F
converter. Refer to the "Programmable Timer" chapter for controlling the programmable timer.
If it is not necessary to run the R/F converter, stop the clock supply by setting this register to "0" to reduce current
consumption. At initial reset, this register is set to "0."
ERF[1:0]: R/F conversion select register (FF60H•D[1:0])
Selects the channel and sensor type to perform R/F conversion.
7.3 Selecting channel and sensor typeTable 17.
ERF[1:0] Channel and sensor type
3 Ch.1 DC
2 Ch.1 AC
1 Ch.0 DC
0 I/O
DC: R/F conversion using a DC bias resistive sensor such as a thermistor
AC: R/F conversion using an AC bias resistive sensor such as a humidity sensor
The R/F converter channel 0 input/output terminals are shared with the I/O port (P51–P53). By setting this reg-
ister to other than "0," P53, P52 and P51 are configured as the RFIN0, REF0 and SEN0 terminals, respectively.
At initial reset, this register is set to "0."
RFOUT: RFOUT enable register (FF60H•D2)
Enables RFOUT output from the P50 port.
When "1" is written: Enabled (RFOUT)
When "0" is written: Disabled (I/O port)
Reading: Valid
When using the RFOUT output, write "1" to RFOUT to set P50 as the RFOUT output port. At initial reset, this
register is set to "0."
RFCNT: Continuous oscillation enable register (FF60H•D3)
Enables the R/F converter to oscillate continuously.
When "1" is written: Continuous oscillation
When "0" is written: Normal oscillation
Reading: Valid
By writing "1" to RFCNT, the reference oscillation or sensor oscillation can be continued even if the stop condi-
tion has been met. This function with RFOUT enabled allows easy measurement of the CR oscillation frequency.
At initial reset, this register is set to "0."
17 R/F CONVERTER
17-10 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
RFRUNS: Sensor oscillation RUN control/status (FF61H•D0)
Starts R/F conversion for the sensor and indicates the operating (RUN/STOP) status.
When "1" is written: R/F conversion starts
When "0" is written: No operation
When "1" is read: RUN status
When "0" is read: STOP status
Writing "1" to RFRUNS starts an R/F conversion for the sensor. The register is held at "1" while the R/F conver-
sion is being processed and is set to "0" when the R/F conversion has completed. Writing "0" during an R/F con-
version stops the CR oscillation. When the channel 1 sensor type (AC bias and DC bias) is changed by ERF[1:0]
during sensor oscillation, RFRUNS is not reset. In this case, reset RFRUNS by writing "0." If RFRUNS and
RFRUNR are set to "1" simultaneously, RFRUNR is effective. At initial reset, this register is set to "0."
RFRUNR: Reference oscillation RUN control/status (FF61H•D1)
Starts R/F conversion for the reference resistance and indicates the operating (RUN/STOP) status.
When "1" is written: R/F conversion starts
When "0" is written: No operation
When "1" is read: RUN status
When "0" is read: STOP status
Writing "1" to RFRUNR starts an R/F conversion for the reference resistance. The register is held at "1" while
the R/F conversion is being processed and is set to "0" when the R/F conversion has completed. Writing "0"
during an R/F conversion stops the CR oscillation. When the channel 1 sensor type (AC bias and DC bias) is
changed by ERF[1:0] during reference oscillation, RFRUNR is not reset. In this case, reset RFRUNR by writing
"0." RFRUNR is reset when the channel for R/F conversion is changed. If RFRUNS and RFRUNR are set to "1"
simultaneously, RFRUNR is effective. At initial reset, this register is set to "0."
OVMC: Measurement counter overflow flag (FF61H•D2)
Indicates whether the measurement counter has overflown.
When "1" is read: Overflow has occurred
When "0" is read: Overflow has not occurred
When "1" is written: Flag reset
When "0" is written: No operation
If an overflow occurs while counting the oscillation of the sensor, OVMC is set to "1" and an error interrupt oc-
curs at the same time. This flag is reset by writing "1" or starting R/F conversion. At initial reset, this flag is set
to "0."
OVTC: Time base counter overflow flag (FF61H•D3)
Indicates whether the time base counter has overflown.
When "1" is read: Overflow has occurred
When "0" is read: Overflow has not occurred
When "1" is written: Flag reset
When "0" is written: No operation
If an overflow occurs while counting the oscillation of the reference resistance, OVTC is set to "1" and an error
interrupt occurs at the same time. This flag is reset by writing "1" or starting R/F conversion. At initial reset, this
flag is set to "0."
17 R/F CONVERTER
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 17-11
(Rev. 1.1)
MC[19:0]: Measurement counter (FF66H–FF62H)
The measurement counter counts up according to the CR oscillation clock. It permits writing and reading on a
4-bit basis. The complement of the number of clocks to be counted by the oscillation of the reference resistance
must be entered in this counter prior to reference oscillation. When the counter reaches "00000H" due to overflow,
the oscillation of the reference resistance stops. When converting a sensor oscillation, "00000H" must be set in
this register (it is unnecessary when it is done immediately after a reference oscillation has completed). The sen-
sor oscillation and measurement counter stop when the time base counter overflows. Number of clocks counted
by the sensor oscillation can be evaluated from the value indicated by the counter when it stops. Calculate the
target value by processing the above counted number according to the program. Measurable range and the over-
flow of the counter must be taken into account when setting an initial value to be entered prior to R/F conversion.
At initial reset, this counter is undefined.
TC[19:0]: Time base counter (FF6BH–FF67H)
Writing and reading is possible on a 4-bit basis by the time base counter that is used to adjust the CR oscillation
time between the reference resistance and the sensor. The time base counter counts down during oscillation of the
reference resistance and counts up to "00000H" during oscillation of the sensor. "00000H" needs to be entered in
the counter prior to a reference oscillation in order to adjust the CR oscillating time (number of clocks) of both
counts. The counter value after a reference oscillation has completed should be read from this register and save it
in the memory. The saved value should be set in this counter before starting a sensor oscillation. At initial reset,
this counter is undefined.
Precautions17.8
• When an error interrupt occurs, reset the overflow flag (OVMC or OVTC) by writing "1." The same error interrupt
will occur again if the overflow flag is not reset.
• When setting the measurement counter or time base counter, always write 5 words of data continuously in order
from the lower address (FF62H → FF63H → FF64H → FF65H → FF66H, FF67H → FF68H → FF69H → FF6AH
→ FF6BH). Furthermore, an LD instruction should be used for writing data to the measurement counter and a
read-modify-write instruction (AND, OR, ADD, SUB, etc.) cannot be used. If data other than low-order 4 bits is
written, the counter cannot be set to the desired value.
• The R/F converter reference and sensor oscillation frequencies should be determined after an adequate evaluation,
since low voltage, 2 V or lower in particular, increases the voltage deviation. Also the voltage deviation depends
on the environment including board, resistance, and capacitance (see RFC characteristic curves in the "Electrical
Characteristics" chapter).
18 SVD (SUPPLY VOLTAGE DETECTION) CIRCUIT
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 18-1
(Rev. 1.1)
SVD (Supply Voltage Detection) Circuit18
Configuration of SVD Circuit18.1
The S1C6F016 has a built-in SVD (supply voltage detection) circuit, so that the software can find when the source
voltage lowers. Turning the SVD circuit on/off and the SVD criteria voltage setting can be done with software. Figure
18.1.1 shows the configuration of the SVD circuit.
V
Detection output
Data bus
DD
VSS
SVDON
SVDS3
|
SVDS0
Criteria voltage
setting circuit
SVD circuit SVDDT
1.1 Configuration of SVD circuitFigure 18.
SVD Operation18.2
The SVD circuit compares the criteria voltage set by software and the supply voltage (VDD terminal–VSS terminal)
and sets its results into the SVDDT latch. By reading the data of this SVDDT latch, it can be determined by means
of software whether the supply voltage is normal or has dropped.
The criteria voltage can be selected from 16 types shown in Table 18.2.1 using the SVDS[3:0] register.
2.1 Criteria voltageTable 18.
SVDS[3:0] Criteria voltage (V)
FH 3.2
EH 3.1
DH 3.0
CH 2.9
BH 2.8
AH 2.7
9H 2.6
8H 2.5
7H 2.4
6H 2.3
5H 2.2
4H 2.1
3H 2.0
2H 1.9
1H 1.8
0H 1.7
When the SVDON register is set to "1," supply voltage detection by the SVD circuit is executed. As soon as the SV-
DON register is reset to "0," the result is loaded to the SVDDT latch and the SVD circuit goes off.
To obtain a stable detection result, the SVD circuit must be on for at least 500 µsec. So, to obtain the SVD detection
result, follow the programming sequence below.
1. Set SVDON to "1"
2. Maintain for 500 µsec minimum
3. Set SVDON to "0"
4. Read SVDDT
When the SVD circuit is on, the IC draws a large current, so keep the SVD circuit off unless it is.
18 SVD (SUPPLY VOLTAGE DETECTION) CIRCUIT
18-2 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
I/O Memory of SVD Circuit18.3
Table 18.3.1 shows the I/O addresses and the control bits for the SVD circuit.
3.1 Control bits of SVD circuitTable 18.
Address Register name R/W Default Setting/data Function
FF04H D3 SVDS3 R/W 0 F 3.2 B 2.8 7 2.4 3 2.0 SVD criteria voltage (V) setting
D2 SVDS2 R/W 0 E 3.1 A 2.7 6 2.3 2 1.9
D1 SVDS1 R/W 0 D 3.0 9 2.6 5 2.2 1 1.8
D0 SVDS0 R/W 0 C 2.9 8 2.5 4 2.1 0 1.7
FF05H D3 0 (*3) R – (*2) – Unused
D2 SVDS4 R/W 0 1 1 0 0 General-purpose register
D1 SVDDT R 0 1 Low 0 Normal SVD evaluation data
D0 SVDON R/W 0 1 On 0 Off SVD circuit On/Off
*1: Initial value at initial reset *2: Not set in the circuit *3: Constantly "0" when being read
SVDS[3:0]: VD criteria voltage setting register (FF04H)
Criteria voltage for SVD is set as shown in Table 18.2.1. At initial reset, this register is set to "0."
SVDON: SVD circuit On/Off register (FF05H•D0)
Turns the SVD circuit on and off.
When "1" is written: SVD circuit On
When "0" is written: SVD circuit Off
Reading: Valid
When SVDON is set to "1," a source voltage detection is executed by the SVD circuit. As soon as SVDON is
reset to "0," the result is loaded to the SVDDT latch. To obtain a stable detection result, the SVD circuit must be
on for at least 500 µsec. At initial reset, this register is set to "0."
SVDDT: SVD evaluation data (FF05H•D1)
This is the result of supply voltage detection.
When "1" is read: Supply voltage (VDD–VSS) < Criteria voltage
When "0" is read: Supply voltage (VDD–VSS) ≥ Criteria voltage
Writing: Invalid
The result of supply voltage detection at time of SVDON is set to "0" can be read from this latch. At initial reset,
SVDDT is set to "0."
Precautions18.4
• To obtain a stable detection result, the SVD circuit must be on for at least 500 µsec. So, to obtain the SVD detection
result, follow the programming sequence below.
1. Set SVDON to "1"
2. Maintain for 500 µsec minimum
3. Set SVDON to "0"
4. Read SVDDT
• The SVD circuit should normally be turned off because SVD operation increase current consumption.
19 ELECTRICAL CHARACTERISTICS
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 19-1
(Rev. 1.1)
Electrical Characteristics19
Absolute Maximum Rating19.1
(VSS = 0V)
Item Symbol Condition Rated value Unit
Power supply voltage VDD – -0.3 to +4.0 V
LCD power supply voltage VC3 – -0.3 to +6.0 V
Input voltage VI– -0.3 to VDD + 0.3 V
Output voltage VO– -0.3 to VDD + 0.3 V
High level output current IOH 1 pin -5 mA
Total of all pins -20 mA
Low level output current IOL 1 pin 5 mA
Total of all pins 20 mA
Permissible loss *1PD– 200 mW
Operating temperature Ta – -20 to 70 °C
Storage temperature Tstg – -65 to 150 °C
Soldering temperature/time Tsol – 260°C, 10 seconds (lead section) –
*1 In case of plastic package (QFP15-100pin)
Recommended Operating Conditions19.2
(Ta = -20 to 70°C)
Item Symbol Condition Min. Typ. Max. Unit
Power supply voltage VDD Normal operation mode 1.8 – 3.6 V
Flash programming mode 2.7 – 3.6 V
Operating frequency fOSC1 Crystal oscillation – 32.768 – kHz
fOSC3 Ceramic oscillation 30 – 4,200 kHz
CR oscillation (external R) 30 – 2,200 kHz
Capacitor between CA and CB *1C1– 0.1 – µF
Capacitor between VSS and VC1 *1C3– 0.1 – µF
Capacitor between VSS and VC2 *1C4– 0.1 – µF
Capacitor between VSS and VC3 *1C5– 0.1 – µF
Capacitor between VSS and VD1 C2– 0.1 – µF
*1 The capacitors are not required when LCD driver is not used. In this case, leave the VC1 to VC3, CA and CB pins open.
Flash EEPROM programming/erasing
Unless otherwise specified: VDD=2.7 to 3.6V (VD1=2.5V), VSS = 0V, Ta=25°C
Item Symbol Condition Min. Typ. Max. Unit
Programming count CFEP *11,000 – – cycle
*1 The programming count assumes that "erasing + programming" or "programming only" is one count and the programmed data is
guaranteed to be retained for 10 years.
19 ELECTRICAL CHARACTERISTICS
19-2 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
DC Characteristics19.3
Unless otherwise specified: VDD=1.8 to 3.6V, VSS=0V, Ta=-20 to 70°C
Item Symbol Condition Min. Typ. Max. Unit
High level input voltage VIH – P00–P13 *1 0.8VDD – VDD V
Low level input voltage VIL – P00–P13 *1 0 – 0.2VDD V
High level Schmitt input voltage
VT+ – RESET, RFIN1, Pxx *2 0.5VDD – 0.9VDD V
Low level Schmitt input voltage
VT- – RESET, RFIN1, Pxx *2 0.1VDD – 0.5VDD V
High level output current IOH1 VOH1=0.9VDD Pxx, REF1, SEN1, HUD – – -0.5 mA
Low level output current IOL1 VOL1=0.1VDD Pxx, REF1, SEN1, HUD 0.5 – – mA
Input leakage current ILI – RESET, RFIN1, Pxx -1 – 1 µA
Output leakage current ILO – Pxx, REF1, SEN1, HUD -1 – 1 µA
Input pull-down resistance RIN – RESET, Pxx 100 – 500 kΩ
Input pin capacitance CIN VIN=0V, Ta = 25°C RESET, RFIN1, Pxx – – 15 pF
Common output current IOH2 VOH2=VC3-0.05V COM0 to COM7 – – -10 µA
IOL2 VOL2=VSS+0.05V 10 – – µA
Segment output current
(during LCD output)
IOH3 VOH3=VC3-0.05V SEG0 to SEG55 – – -10 µA
IOL3 VOL3=VSS+0.05V 10 – – µA
Segment output current
(during DC output)
IOH4 VOH4=0.8VD1 SEG0 to SEG35 – – -330 µA
IOL4 VOL4=0.2VD1 330 – – µA
*1 When CMOS level is selected as the input interface
*2 P00–P13 configured as Schmitt input and other P ports
VDD
0 VT+VT-0
VIN (V)
VOUT (V)
VDD
Analog Circuit Characteristics and Current Consumption19.4
LCD Driver19.4.1
The typical values in the following LCD driver characteristics varies depending on the panel load (panel size, drive
duty, number of display pixels and display contents), so evaluate them by connecting to the actually used LCD panel.
LCD drive voltage (VC1 reference)
Unless otherwise specified: VDD=1.8 to 3.6V, VSS=0V, Ta=25°C, C1–C5=0.1µF, When a checker pattern is displayed, No panel load
A 1 MΩ load resistor is connected between VSS and VC1, between VSS and VC2, and between VSS and VC3.
Item Symbol Condition Min. Typ. Max. Unit
LCD drive voltage VC1 0.334 ×
VC3(typ.)
– 0.364 ×
VC3(typ.)
V
VC2 0.653 ×
VC3(typ.)
– 0.693 ×
VC3(typ.)
V
VC3 LC[3:0]=0H
Typ. ×
0.96
2.75
Typ. ×
1.04
V
LC[3:0]=1H 2.84 V
LC[3:0]=2H 2.92 V
LC[3:0]=3H 3.00 V
LC[3:0]=4H 3.08 V
LC[3:0]=5H 3.17 V
LC[3:0]=6H 3.25 V
LC[3:0]=7H 3.34 V
LC[3:0]=8H 3.42 V
LC[3:0]=9H 3.50 V
LC[3:0]=AH 3.58 V
LC[3:0]=BH 3.67 V
LC[3:0]=CH 3.75 V
LC[3:0]=DH 3.83 V
LC[3:0]=EH 3.91 V
LC[3:0]=FH 4.00 V
19 ELECTRICAL CHARACTERISTICS
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 19-3
(Rev. 1.1)
LCD drive voltage (VC2 reference)
Unless otherwise specified: VDD=3.6V, VSS=0V, Ta=25°C, C1–C5=0.1µF, When a checker pattern is displayed, No panel load
A 1 MΩ load resistor is connected between VSS and VC1, between VSS and VC2, and between VSS and VC3.
Item Symbol Condition Min. Typ. Max. Unit
LCD drive voltage VC1 0.317 ×
VC3(typ.)
– 0.357 ×
VC3(typ.)
V
VC2 0.656 ×
VC3(typ.)
– 0.706 ×
VC3(typ.)
V
VC3 LC[3:0]=0H
Typ. ×
0.96
2.84
Typ. ×
1.04
V
LC[3:0]=1H 2.92 V
LC[3:0]=2H 3.01 V
LC[3:0]=3H 3.09 V
LC[3:0]=4H 3.17 V
LC[3:0]=5H 3.26 V
LC[3:0]=6H 3.34 V
LC[3:0]=7H 3.43 V
LC[3:0]=8H 3.51 V
LC[3:0]=9H 3.60 V
LC[3:0]=AH 3.68 V
LC[3:0]=BH 3.77 V
LC[3:0]=CH 3.85 V
LC[3:0]=DH 3.94 V
LC[3:0]=EH 4.02 V
LC[3:0]=FH 4.11 V
SVD Circuit19.4.2
Unless otherwise specified: VDD=1.8 to 3.6V, VSS=0V, Ta=25°C
Item Symbol Condition Min. Typ. Max. Unit
SVD voltage VSVD SVDS[3:0]=0H
Typ. ×
0.97
1.7
Typ. ×
1.03
V
SVDS[3:0]=1H 1.8 V
SVDS[3:0]=2H 1.9 V
SVDS[3:0]=3H 2.0 V
SVDS[3:0]=4H 2.1 V
SVDS[3:0]=5H 2.2 V
SVDS[3:0]=6H 2.3 V
SVDS[3:0]=7H 2.4 V
SVDS[3:0]=8H 2.5 V
SVDS[3:0]=9H 2.6 V
SVDS[3:0]=AH 2.7 V
SVDS[3:0]=BH 2.8 V
SVDS[3:0]=CH 2.9 V
SVDS[3:0]=DH 3.0 V
SVDS[3:0]=EH 3.1 V
SVDS[3:0]=FH 3.2 V
SVD circuit response time tSVD – – 500 µs
R/F Converter Circuit19.4.3
Unless otherwise specified: VDD=1.8 to 3.6V, VSS=0V, Ta=25°C
Item Symbol Condition Min. Typ. Max. Unit
Reference/sensor oscillation
frequencies *1
fRFCLK Ta=-20 to 70°C 1 – 2,000 kHz
Reference/sensor oscillation
frequency/IC deviation *2
DfRFCLK/DIC -40 – 40 %
Reference/sensor resistance RREF/RSEN 10 – – kΩ
Reference capacitor and capacitive
sensor capacitance *3
CRFC/CSEN 100 – 2,000 pF
Time base counter clock frequency fTCCLK – – 4.2 MHz
*1 The oscillation frequency/IC deviation characteristic value may increase due to variations in oscillation frequency caused by leak-
age current if the oscillation frequency is 1 kHz or lower.
*2 In these characteristics, unevenness between production lots, and variations in board, resistances and capacitances used in the
measurement environment are taken into account (variations in temperature are not included).
*3 The CR oscillation can be performed if the resistance or capacitance is out of the range shown in the table (see characteristic
curves), note, however, that the oscillation frequency/IC deviation characteristic value may increase due to parasitic elements on
the board and those in the IC.
19 ELECTRICAL CHARACTERISTICS
19-4 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
Current Consumption19.4.4
Unless otherwise specified: VDD=1.8 to 3.6V, VSS=0V, FLCKSx=0x0 (32Hz), Ta=25°C, C1–C5=0.1µF, No panel load
Item Symbol Condition Min. Typ. Max. Unit
Current consumption in SLEEP ISLP When SLP is executed: OSC1=ON, OSC3=OFF – 0.7 2.5 µA
Current consumption in HALT IHALT1 OSC1=32kHz Crystal, OSC3=OFF – 2 5 µA
IHALT2 OSC1=32kHz Crystal, OSC3=4MHz Ceramic – 100 200 µA
IHALT3 OSC1=32kHz Crystal, OSC3=2MHz CR (external R) – 160 300 µA
IHALT4
OSC1=32kHz Crystal, OSC3=500kHz CR (built-in R)
– 50 90 µA
Current consumption
during execution
IEXE1 OSC1=32kHz Crystal, OSC3=OFF, CPUclk=OSC1 – 9 18 µA
IEXE2 OSC1=32kHz Crystal, OSC3=4MHz Ceramic,
CPUclk=OSC3
– 950 1300 µA
IEXE3 OSC1=32kHz Crystal, OSC3=2MHz CR(external R),
CPUclk=OSC3
– 600 1100 µA
IEXE4 OSC1=32kHz Crystal, OSC3=500kHz CR(built-in R),
CPUclk=OSC3
– 160 250 µA
Current consumption during
execution in heavy load
protection mode
IEXE1H OSC1=32kHz Crystal, OSC3=OFF, CPUclk=OSC1
VDHLMOD=1
– 16 30 µA
LCD circuit current
(VC1 reference)
ILCD1 DSPC[1:0]=All on, LC[3:0]=FH, OSC1=32kHz,
VDD=1.8 to 3.6V, VCREF=0 *1
– 1 3 µA
LCD circuit current in heavy
load protection mode
(VC1 reference)
ILCD1H DSPC[1:0]=All on, LC[3:0]=FH, OSC1=32kHz,
VDD=1.8 to 3.6V, VCREF=0, VCHLMOD=1 *1
– 10 25 µA
LCD circuit current
(VC2 reference)
ILCD2 DSPC[1:0]=All on, LC[3:0]=FH, OSC1=32kHz,
VDD=2.8 to 3.6V, VCREF=1 *1
– 0.8 2 µA
LCD circuit current in heavy
load protection mode
(VC2 reference)
ILCD2H DSPC[1:0]=All on, LC[3:0]=FH, OSC1=32kHz,
VDD=2.8 to 3.6V, VCREF=1, VCHLMOD=1 *1
– 15 30 µA
SVD circuit current ISVD VDD=3.6V *2– 8 15 µA
R/F converter circuit current IRFC VDD=3.6V, CREF=CSEN=1000pF, RREF=RSEN=10kΩ *3– 200 300 µA
*1 This value is added to the current consumption in HALT mode, current consumption during execution, or current consumption
during execution in heavy load protection mode when the LCD circuit is active. Current consumption increases according to the
display contents and panel load.
*2 This value is added to the current consumption during execution or current consumption during execution in heavy load protection
mode when the SVD circuit is active.
*3 This value is added to the current consumption during execution when the R/F converter circuit is active.
Oscillation Characteristics19.5
The oscillation characteristics change depending on the conditions (components used, board pattern, etc.). Use the
following characteristics as reference values.
OSC1 crystal oscillation circuit
Unless otherwise specified: VDD=1.8 to 3.6V, VSS=0V, Ta=25°C, Crystal resonator=C-002RX (R1=30kΩ Typ., CL=12.5pF),
CG1=25pF (external), CD1=Built-in
Item Symbol Condition Min. Typ. Max. Unit
Oscillation start time tsta – – 3 s
External gate capacitance CG1 Including the board capacitance 0 – 25 pF
Built-in drain capacitance CD1 In case of the chip – 20 – pF
Frequency/IC deviation Df/DIC VDD=constant -10 – 10 ppm
Frequency/voltage deviation Df/DV – – 1 ppm/V
Frequency adjustment range Df/DCGVDD=constant, CG=0 to 25pF 25 – – ppm
OSC3 ceramic oscillation circuit
Unless otherwise specified: VDD=1.8 to 3.6V, VSS=0V, Ta=25°C, CG3=CD3=30pF
Item Symbol Condition Min. Typ. Max. Unit
Oscillation start time tsta – – 1 ms
19 ELECTRICAL CHARACTERISTICS
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 19-5
(Rev. 1.1)
OSC3 CR oscillation circuit (external R type)
Unless otherwise specified: VDD=1.8 to 3.6V, VSS=0V, Ta=25°C
Item Symbol Condition Min. Typ. Max. Unit
Oscillation start time tsta – – 1 ms
Frequency/IC deviation Df/DIC RCR=constant -25 – 25 %
OSC3 CR oscillation circuit (built-in R type)
Unless otherwise specified: VDD=1.8 to 3.6V, VSS=0V, Ta=25°C
Item Symbol Condition Min. Typ. Max. Unit
Oscillation frequency fOSC3 Typ. ×
0.75
500 Typ. ×
1.25
kHz
Oscillation start time tsta – – 20 µs
Serial Interface AC Characteristics19.6
Master mode
Unless otherwise specified: VDD=3.0V, VSS=0V, Ta=-20 to 70°C, VIH1=0.8VDD, VIL1=0.2VDD, VOH=0.8VDD, VOL=0.2VDD
Item Symbol Min. Typ. Max. Unit
Transmit data output delay time tSMD – – 200 ns
Receive data input set-up time tSMS 400 – – ns
Receive data input hold time tSMH 200 – – ns
Note that the maximum clock frequency is limited to 1 MHz.
Slave mode
Unless otherwise specified: VDD=3.0V, VSS=0V, Ta=-20 to 70°C, VIH1=0.8VDD, VIL1=0.2VDD, VOH=0.8VDD, VOL=0.2VDD
Item Symbol Min. Typ. Max. Unit
Transmit data output delay time tSSD – – 500 ns
Receive data input set-up time tSSS 400 – – ns
Receive data input hold time tSSH 200 – – ns
Note that the maximum clock frequency is limited to 1 MHz.
<Master mode>
SCLK OUT
SOUT
SIN
VOH
VOL
tsms tsmh
tsmd
VOH
VIH1
VIL1
VOL
<Slave mode>
SCLK IN
SOUT
SIN
VIH1
VOH
VOL
tsss tssh
tssd
VIH1
VIL1
VIL1
Timing Chart19.7
System clock switching timing chart
OSCC
CLKCHG
1 instruction execution
time or longer
10 msec min.
19 ELECTRICAL CHARACTERISTICS
19-6 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
Characteristics Curves (reference value)19.8
High level output current-voltage characteristic
Ta = 70°C, Max. value
0.0
0
-3
-6
-9
-12
-15
0.2 0.4 0.6 0.8 1.0
VDD–VOH [V]
VDD = 1.8 V
VDD = 2.4 V
VDD = 3.6 V
IOH [mA]
Low level output current-voltage characteristic
Ta = 70°C, Min. value
0.0
15
12
9
6
3
0
0.1 0.2 0.3 0.4 0.5 0.6
VOL [V]
VDD = 1.8 V
IOL [mA]
VDD = 3.6 V
VDD = 2.4 V
19 ELECTRICAL CHARACTERISTICS
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 19-7
(Rev. 1.1)
LCD drive voltage - supply voltage characteristic (1/3 bias, VC2 reference)
Ta = 25°C, Typ. value
1.5 2.0 2.5 3.0 3.5 4.0
5.0
4.0
3.0
2.0
VDD [V]
LCx = FH
LCx = 8H
LCx = 0H
VC3 [V]
LCD drive voltage - supply voltage characteristic (1/3 bias, VC1 reference)
Ta = 25°C, Typ. value
1.5 2.0 2.5 3.0 3.5 4.0
5.0
4.0
3.0
2.0
VDD [V]
LCx = FH
LCx = 8H
LCx = 0H
VC3 [V]
LCD drive voltage - ambient temperature characteristic (1/3 bias, VC2/VC1 reference)
VDD = 3.0 V, Typ. value
-50
1.05VC3
1.04VC3
1.03VC3
1.02VC3
1.01VC3
1.00VC3
0.99VC3
0.98VC3
0.97VC3
0.96VC3
0.95VC3
0.94VC3
-25 0255075 100
Ta [°C]
VC3 [V]
19 ELECTRICAL CHARACTERISTICS
19-8 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
LCD drive voltage - load characteristic (1/3 bias)
When a load is connected to VC3 terminal only LCx = FH, Ta = 25°C, Typ. value
0
4.40
4.20
4.00
3.80
3.60
3.40
4812 16 20
VC2 reference
VC1 reference
-IVC3 [µA]
VC3 [V]
SVD voltage - ambient temperature characteristic
SVDSx = FH, Typ. value
-50
1.05VSVD
1.04VSVD
1.03VSVD
1.02VSVD
1.01VSVD
1.00VSVD
0.99VSVD
0.98VSVD
0.97VSVD
0.96VSVD
0.95VSVD
-25 0255075 100
Ta [°C]
VSVD [V]
HALT state current consumption - temperature characteristic (during operation with OSC1)
<Crystal oscillation, fOSC1 = 32.768 kHz> VDD = 3.6 V, OSC3 = OFF, Clock manager = OFF, Typ. value
-50
8
6
4
2
0
-25 0255075 100
Ta [°C]
IHALT1 [µA]
19 ELECTRICAL CHARACTERISTICS
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 19-9
(Rev. 1.1)
RUN state current consumption - temperature characteristic (during operation with OSC1)
<Crystal oscillation, fOSC1 = 32.768 kHz> VDD = 3.6 V, OSC3 = OFF, Clock manager = OFF, Typ. value
-50
20
15
10
5
0
-25 0255075 100
Ta [°C]
IEXE1 [µA]
RUN state current consumption - frequency characteristic (during operation with OSC3)
<Ceramic oscillation> VDD = 3.6 V, Ta = 25°C, Typ. value
0.50 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
1200
1000
800
600
400
200
0
OSC3 frequency [MHz]
IEXE2 [µA]
RUN state current consumption - resistor characteristic (during operation with OSC3)
<CR oscillation (external R)> VDD = 3.6 V, Ta = 25°C, Typ. value
10
1000
800
600
400
200
0
100 1000
RCR3 [kΩ]
IEXE3 [µA]
19 ELECTRICAL CHARACTERISTICS
19-10 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
Oscillation frequency - resistor characteristic (OSC3)
<CR oscillation (external R)> VDD = 3.6 V, Ta = 25°C, Typ. value
10
10000
1000
100
10
100 1000
RCR3 [kΩ]
fOSC3 [kHz]
Oscillation frequency - temperature characteristic (OSC3)
<CR oscillation (external R)> RCR3 = 30 kΩ, Typ. value
-50
10000
1000
100
25-25 50075 100
Ta [°C]
fOSC3 [kHz]
RUN state current consumption - temperature characteristic (during operation with OSC3)
<CR oscillation (built-in R)> VDD = 3.6 V, Typ. value
-50
250
200
150
100
0
-25 0255075 100
Ta [°C]
IEXE4 [µA]
19 ELECTRICAL CHARACTERISTICS
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 19-11
(Rev. 1.1)
Oscillation frequency - temperature characteristic (OSC3)
<CR oscillation (built-in R)> VDD = 3.6 V, Typ. value
-50
650
600
550
500
450
400
350
-25 0255075 100
Ta [°C]
fOSC3 [kHz]
RFC reference/sensor oscillation frequency - resistance characteristic (DC oscillation mode)
CSEN = 1000 pF, Ta = 25°C, Typ. value
0110 100 1,000 10,000
10,000
1,000
100
10
1
0
RREF/RSEN [kΩ]
fRFCLK [kHz]
VDD = 3.6 V
VDD = 1.8 V
IC deviation
RFC reference/sensor oscillation frequency - resistance characteristic (AC oscillation mode)
CSEN = 1000 pF, Ta = 25°C, Typ. value
0110 100 1,000 10,000
10,000
1,000
100
10
1
0
RREF/RSEN [kΩ]
fRFCLK [kHz]
VDD = 3.6 V
VDD = 1.8 V
IC deviation
19 ELECTRICAL CHARACTERISTICS
19-12 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
RFC reference/sensor oscillation frequency - capacitance characteristic
(DC/AC oscillation mode)
RSEN = 100 kΩ, Ta = 25°C, Typ. value
10 100 1,000 10,000
1,000
100
10
1
0
CRFC [pF]
fRFCLK [kHz]
VDD = 3.6 V
VDD = 1.8 V
IC deviation
RFC reference/sensor oscillation frequency - current consumption characteristic
(DC/AC oscillation mode)
CRFC = 1000 pF, Ta = 25°C, Typ. value
0110 100 1,000 10,000
fRFC [kHz]
IRFC [µA]
10,000
1,000
100
10
1
VDD = 3.6 V
VDD = 1.8 V
20 BASIC EXTERNAL WIRING DIAGRAM
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 20-1
(Rev. 1.1)
Basic External Wiring Diagram20
Standard mask option Type B
CA
CB
VDD
RESET
VD1
VC1
VC2
VC3
TEST
VSS
OSC1
OSC2
OSC3
OSC4
3.6 V
|
1.8 V
+
X'tal
Ceramic
P00–P03
P10–P13
P20–P23
P30–P33
P40–P43
SEG0
|
SEG35
COM0
|
COM7
LCD panel
36 × 8/7/6/5/4/3
I/O
DMOD
DCLK
DRXD
DTXD
Flash EEPROM
programmer
I/O
S1C6F016
TYPE-B
[The potential of the substrate
(back of the chip) is VSS.]
RTMP
RREF1
RHUD
RREF2
RFOUT/P50
SEN0/P51
REF0/P52
RFIN0/P53
HUD
SEN1
REF1
RFIN1
TEST1
TEST2
TEST3
Recommended values for external parts
CG1
C1
C2
C3
C4
C5
Cres
CP
Symbol
X'tal
CG1
Ceramic
CG3
CD3
C1
C2
C3
C4
C5
CP
Cres
Name
Crystal resonator
Trimmer capacitor
Ceramic resonator
Gate capacitor
Drain capacitor
Booster capacitor
Capacitor between VSS and VD1
Capacitor between VSS and VC1
Capacitor between VSS and VC2
Capacitor between VSS and VC3
Capacitor for power supply
Capacitor for RESET terminal
Recommended value
32.768 kHz
0 pF to 25 pF
4 MHz
30 pF (Ceramic oscillation)
30 pF (Ceramic oscillation)
0.1 µF
0.1 µF
0.1 µF
0.1 µF
0.1 µF
3.3 µF
0.47 µF
CG3
CD3
Note: The values in the above table are shown only for reference and not guaranteed.
20 BASIC EXTERNAL WIRING DIAGRAM
20-2 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
Standard mask option Type E
CA
CB
VDD
RESET
VD1
VC1
VC2
VC3
TEST
VSS
OSC1
OSC2
OSC3
OSC4
3.6 V
|
1.8 V
+
X'tal
P00–P03
P10–P13
SEG0
|
SEG55
COM0
|
COM7
LCD panel
56 × 8/7/6/5/4/3
I/O
DMOD
DCLK
DRXD
DTXD
Flash EEPROM
programmer
I/O
S1C6F016
TYPE-E
[The potential of the substrate
(back of the chip) is VSS.]
TEST1
TEST2
TEST3
Recommended values for external parts
CG1
C1
C2
C3
C4
C5
Cres
CP
Symbol
X'tal
CG1
RCR
C1
C2
C3
C4
C5
CP
Cres
Name
Crystal resonator
Trimmer capacitor
Resistor for CR oscillation
Booster capacitor
Capacitor between VSS and VD1
Capacitor between VSS and VC1
Capacitor between VSS and VC2
Capacitor between VSS and VC3
Capacitor for power supply
Capacitor for RESET terminal
Recommended value
32.768 kHz
0 pF to 25 pF
22 kΩ to 400 kΩ
0.1 µF
0.1 µF
0.1 µF
0.1 µF
0.1 µF
3.3 µF
0.47 µF
RCR
Note: The values in the above table are shown only for reference and not guaranteed.
20 BASIC EXTERNAL WIRING DIAGRAM
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation 20-3
(Rev. 1.1)
Standard mask option Type G
CA
CB
VDD
RESET
VD1
VC1
VC2
VC3
TEST
VSS
OSC1
OSC2
OSC3
OSC4
3.6 V
|
1.8 V
+
X'tal
P00–P03
P10–P13
P20–P23
P30–P33
P40–P43
SEG0–SEG35
O
COM0
|
COM7
I/O
DMOD
DCLK
DRXD
DTXD
Flash EEPROM
programmer
I/O
S1C6F016
TYPE-G
[The potential of the substrate
(back of the chip) is VSS.
RTMP
RREF1
RHUD
RREF2
RFOUT/P50
SEN0/P51
REF0/P52
RFIN0/P53
HUD
SEN1
REF1
RFIN1
TEST1
TEST2
TEST3
CG1
C2
Cres
CP
RCR
Recommended values for external parts
Symbol
X'tal
CG1
RCR
C2
CP
Cres
Name
Crystal resonator
Trimmer capacitor
Resistor for CR oscillation
Capacitor between VSS and VD1
Capacitor for power supply
Capacitor for RESET terminal
Recommended value
32.768 kHz
0 pF to 25 pF
22 kΩ to 400 kΩ
0.1 µF
3.3 µF
0.47 µF
Note: The values in the above table are shown only for reference and not guaranteed.
APPENDIX A LIST OF I/O REGISTERS
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation AP-A-1
(Rev. 1.1)
Appendix A List of I/O Registers
*1: Initial value at initial reset *2: Not set in the circuit *3: Constantly "0" when being read
FF00H Oscillation Circuit
Address Register name R/W Default Setting/data Function
FF00H D3 CLKCHG R/W 0 1 OSC3 0 OSC1 CPU clock switch
D2 OSCC R/W 0 1 On 0 Off OSC3 oscillation On/Off
D1 0 (*3) R – (*2) – Unused
D0 0 (*3) R – (*2) – Unused
FF01H Watchdog Timer
Address Register name R/W Default Setting/data Function
FF01H D3 0 (*3) R – (*2) – Unused
D2 0 (*3) R – (*2) – Unused
D1 WDEN R/W 1 1 Enable 0 Disable Watchdog timer enable
D0 WDRST (*3) W (Reset) 1 Reset 0 Invalid Watchdog timer reset (writing)
FF02H–FF03H Power Supply Circuit
Address Register name R/W Default Setting/data Function
FF02H D3 VDSEL R/W 0 1 1 0 0 General-purpose register
D2 VCSEL R/W 0 1 1 0 0 General-purpose register
D1 HLON R/W 0 1 1 0 0 General-purpose register
D0 DBON R/W 0 1 1 0 0 General-purpose register
FF03H D3 VCHLMOD R/W 0 1 On 0 Off
VC regulator heavy load protection mode On/Off
D2 VDHLMOD R/W 0 1 On 0 Off
VD regulator heavy load protection mode On/Off
D1 VCREF R/W 0 1 VC2 0 VC1 VC regulator reference voltage selection
D0 LPWR R/W 0 1 On 0 Off VC regulator On/Off
FF04H–FF05H SVD Circuit
Address Register name R/W Default Setting/data Function
FF04H D3 SVDS3 R/W 0 F 3.2 B 2.8 7 2.4 3 2.0 SVD criteria voltage (V) setting
D2 SVDS2 R/W 0 E 3.1 A 2.7 6 2.3 2 1.9
D1 SVDS1 R/W 0 D 3.0 9 2.6 5 2.2 1 1.8
D0 SVDS0 R/W 0 C 2.9 8 2.5 4 2.1 0 1.7
FF05H D3 0 (*3) R – (*2) – Unused
D2 SVDS4 R/W 0 1 1 0 0 General-purpose register
D1 SVDDT R 0 1 Low 0 Normal SVD evaluation data
D0 SVDON R/W 0 1 On 0 Off SVD circuit On/Off
FF10H–FF1BH Clock Manager
Address Register name R/W Default Setting/data Function
FF10H D3 FOUT3 R/W 0 F f3B f3/16 7 f13 f1/32 FOUT frequency selection
(f1 = fOSC1, f3 = fOSC3)
D2 FOUT2 R/W 0 E f3/2 A f3/32 6 f1/2 2 f1/64
D1 FOUT1 R/W 0 D f3/4 9 f3/64 5 f1/4 1 f1/256
D0 FOUT0 R/W 0 C f3/8 8 f3/256 4 f1/16 0 Off
FF11H D3 NRSP11 R/W 0 3 f1/256 1 f1/16 P1 key input interrupt noise reject frequency
selection (f1 = fOSC1, f3 = fOSC3)
D2 NRSP10 R/W 0 2 f1/64 0 Off
D1 NRSP01 R/W 0 3 f1/256 1 f1/16 P0 key input interrupt noise reject frequency
selection (f1 = fOSC1, f3 = fOSC3)
D0 NRSP00 R/W 0 2 f1/64 0 Off
FF12H D3 FLCKS1 R/W 0 3 – 1 21.3 Frame frequency (Hz) selection
D2 FLCKS0 R/W 0 2 16.0 0 32.0
D1 VCCKS1 R/W 0 3 – 1 2048 VC boost frequency (Hz) selection
D0 VCCKS0 R/W 0 2 – 0 Off
FF14H D3 0 (*3) R – (*2) – Unused
D2 SIFCKS2 R/W 0 7 f3/4 4 PT1 1 f1Serial I/F clock frequency selection
(f1 = fOSC1, f3 = fOSC3)
D1 SIFCKS1 R/W 0 6 f3/2 3 f1/4 0 Off/
External
D0 SIFCKS0 R/W 0 5 f32 f1/2
APPENDIX A LIST OF I/O REGISTERS
AP-A-2 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
Address Register name R/W Default Setting/data Function
FF15H D3 0 (*3) R – (*2) – Unused
D2 RFCKS2 R/W 0 7 f3/4 4 PT1 1 f1R/F converter clock frequency selection
(f1 = fOSC1, f3 = fOSC3)
D1 RFCKS1 R/W 0 6 f3/2 3 f1/4 0 Off
D0 RFCKS0 R/W 0 5 f32 f1/2
FF16H D3 MDCKE R/W 0 1 Enable 0 Disable Integer multiplier clock enable
D2 SGCKE R/W 0 1 Enable 0 Disable Sound generator clock enable
D1 SWCKE R/W 0 1 Enable 0 Disable Stopwatch timer clock enable
D0 RTCKE R/W 0 1 Enable 0 Disable Clock timer clock enable
FF18H D3 PTPS03 R/W 0 F f3B f3/16 7 f13 f1/32 Programmable timer 0 count clock frequency
selection (f1 = fOSC1, f3 = fOSC3)
D2 PTPS02 R/W 0 E f3/2 A f3/32 6 f1/2 2 f1/64
D1 PTPS01 R/W 0 D f3/4 9 f3/64 5 f1/4 1 f1/256
D0 PTPS00 R/W 0 C f3/8 8 f3/256 4 f1/16 0 Off
FF19H D3 PTPS13 R/W 0 F f3B f3/16 7 f13 f1/32 Programmable timer 1 count clock frequency
selection (f1 = fOSC1, f3 = fOSC3)
D2 PTPS12 R/W 0 E f3/2 A f3/32 6 f1/2 2 f1/64
D1 PTPS11 R/W 0 D f3/4 9 f3/64 5 f1/4 1 f1/256
D0 PTPS10 R/W 0 C f3/8 8 f3/256 4 f1/16 0 Off
FF1AH D3 PTPS23 R/W 0 F f3B f3/16 7 f13 f1/32 Programmable timer 2 count clock frequency
selection (f1 = fOSC1, f3 = fOSC3)
D2 PTPS22 R/W 0 E f3/2 A f3/32 6 f1/2 2 f1/64
D1 PTPS21 R/W 0 D f3/4 9 f3/64 5 f1/4 1 f1/256
D0 PTPS20 R/W 0 C f3/8 8 f3/256 4 f1/16 0 Off
FF1BH D3 PTPS33 R/W 0 F f3B f3/16 7 f13 f1/32 Programmable timer 3 count clock frequency
selection (f1 = fOSC1, f3 = fOSC3)
D2 PTPS32 R/W 0 E f3/2 A f3/32 6 f1/2 2 f1/64
D1 PTPS31 R/W 0 D f3/4 9 f3/64 5 f1/4 1 f1/256
D0 PTPS30 R/W 0 C f3/8 8 f3/256 4 f1/16 0 Off
FF20H–FF3FH I/O Ports
Address Register name R/W Default Setting/data Function
FF20H D3 P03 R/W 1 1 High 0 Low P03 I/O port data
D2 P02 R/W 1 1 High 0 Low P02 I/O port data
D1 P01 R/W 1 1 High 0 Low P01 I/O port data
D0 P00 R/W 1 1 High 0 Low P00 I/O port data
FF21H D3 IOC03 R/W 0 1 Output 0 Input P03 I/O control register
D2 IOC02 R/W 0 1 Output 0 Input P02 I/O control register
D1 IOC01 R/W 0 1 Output 0 Input P01 I/O control register
D0 IOC00 R/W 0 1 Output 0 Input P00 I/O control register
FF22H D3 PUL03 R/W 1 1 Enable 0 Disable P03 pull-down control register
D2 PUL02 R/W 1 1 Enable 0 Disable P02 pull-down control register
D1 PUL01 R/W 1 1 Enable 0 Disable P01 pull-down control register
D0 PUL00 R/W 1 1 Enable 0 Disable P00 pull-down control register
FF23H D3 SMT03 R/W 1 1 Schmitt 0 CMOS P03 input I/F level select register
D2 SMT02 R/W 1 1 Schmitt 0 CMOS P02 input I/F level select register
D1 SMT01 R/W 1 1 Schmitt 0 CMOS P01 input I/F level select register
D0 SMT00 R/W 1 1 Schmitt 0 CMOS P00 input I/F level select register
FF24H D3 P13 R/W 1 1 High 0 Low P13 I/O port data
D2 P12 R/W 1 1 High 0 Low P12 I/O port data
D1 P11 R/W 1 1 High 0 Low P11 I/O port data
D0 P10 R/W 1 1 High 0 Low P10 I/O port data
FF25H D3 IOC13 R/W 0 1 Output 0 Input P13 I/O control register
D2 IOC12 R/W 0 1 Output 0 Input P12 I/O control register
D1 IOC11 R/W 0 1 Output 0 Input P11 I/O control register
D0 IOC10 R/W 0 1 Output 0 Input P10 I/O control register
FF26H D3 PUL13 R/W 1 1 Enable 0 Disable P13 pull-down control register
D2 PUL12 R/W 1 1 Enable 0 Disable P12 pull-down control register
D1 PUL11 R/W 1 1 Enable 0 Disable P11 pull-down control register
D0 PUL10 R/W 1 1 Enable 0 Disable P10 pull-down control register
FF27H D3 SMT13 R/W 1 1 Schmitt 0 CMOS P13 input I/F level select register
D2 SMT12 R/W 1 1 Schmitt 0 CMOS P12 input I/F level select register
D1 SMT11 R/W 1 1 Schmitt 0 CMOS P11 input I/F level select register
D0 SMT10 R/W 1 1 Schmitt 0 CMOS P10 input I/F level select register
FF28H D3 P23 R/W 1 1 High 0 Low P23 I/O port data
D2 P22 R/W 1 1 High 0 Low P22 I/O port data
D1 P21 R/W 1 1 High 0 Low P21 I/O port data
D0 P20 R/W 1 1 High 0 Low P20 I/O port data
APPENDIX A LIST OF I/O REGISTERS
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation AP-A-3
(Rev. 1.1)
Address Register name R/W Default Setting/data Function
FF29H D3 IOC23 R/W 0 1 Output 0 Input P23 I/O control register
D2 IOC22 R/W 0 1 Output 0 Input P22 I/O control register
D1 IOC21 R/W 0 1 Output 0 Input P21 I/O control register
D0 IOC20 R/W 0 1 Output 0 Input P20 I/O control register
FF2AH D3 PUL23 R/W 1 1 Enable 0 Disable P23 pull-down control register
D2 PUL22 R/W 1 1 Enable 0 Disable P22 pull-down control register
D1 PUL21 R/W 1 1 Enable 0 Disable P21 pull-down control register
D0 PUL20 R/W 1 1 Enable 0 Disable P20 pull-down control register
FF2CH D3 P33 R/W 1 1 High 0 Low P33 I/O port data
D2 P32 R/W 1 1 High 0 Low P32 I/O port data
D1 P31 R/W 1 1 High 0 Low P31 I/O port data
D0 P30 R/W 1 1 High 0 Low P30 I/O port data
FF2DH D3 IOC33 R/W 0 1 Output 0 Input P33 I/O control register
D2 IOC32 R/W 0 1 Output 0 Input P32 I/O control register
D1 IOC31 R/W 0 1 Output 0 Input P31 I/O control register
D0 IOC30 R/W 0 1 Output 0 Input P30 I/O control register
FF2EH D3 PUL33 R/W 1 1 Enable 0 Disable P33 pull-down control register
D2 PUL32 R/W 1 1 Enable 0 Disable P32 pull-down control register
D1 PUL31 R/W 1 1 Enable 0 Disable P31 pull-down control register
D0 PUL30 R/W 1 1 Enable 0 Disable P30 pull-down control register
FF30H D3 P43 R/W 1 1 High 0 Low P43 I/O port data
D2 P42 R/W 1 1 High 0 Low P42 I/O port data
D1 P41 R/W 1 1 High 0 Low P41 I/O port data
D0 P40 R/W 1 1 High 0 Low P40 I/O port data
FF31H D3 IOC43 R/W 0 1 Output 0 Input P43 I/O control register
D2 IOC42 R/W 0 1 Output 0 Input P42 I/O control register
D1 IOC41 R/W 0 1 Output 0 Input P41 I/O control register
D0 IOC40 R/W 0 1 Output 0 Input P40 I/O control register
FF32H D3 PUL43 R/W 1 1 Enable 0 Disable P43 pull-down control register
D2 PUL42 R/W 1 1 Enable 0 Disable P42 pull-down control register
D1 PUL41 R/W 1 1 Enable 0 Disable P41 pull-down control register
D0 PUL40 R/W 1 1 Enable 0 Disable P40 pull-down control register
FF34H D3 P53 R/W 1 1 High 0 Low P53 I/O port data
D2 P52 R/W 1 1 High 0 Low P52 I/O port data
D1 P51 R/W 1 1 High 0 Low P51 I/O port data
D0 P50 R/W 1 1 High 0 Low P50 I/O port data
FF35H D3 IOC53 R/W 0 1 Output 0 Input P53 I/O control register
D2 IOC52 R/W 0 1 Output 0 Input P52 I/O control register
D1 IOC51 R/W 0 1 Output 0 Input P51 I/O control register
D0 IOC50 R/W 0 1 Output 0 Input P50 I/O control register
FF36H D3 PUL53 R/W 1 1 Enable 0 Disable P53 pull-down control register
D2 PUL52 R/W 1 1 Enable 0 Disable P52 pull-down control register
D1 PUL51 R/W 1 1 Enable 0 Disable P51 pull-down control register
D0 PUL50 R/W 1 1 Enable 0 Disable P50 pull-down control register
FF3CH D3 SIP03 R/W 0 1 Enable 0 Disable P03 (KEY03) interrupt select register
D2 SIP02 R/W 0 1 Enable 0 Disable P02 (KEY02) interrupt select register
D1 SIP01 R/W 0 1 Enable 0 Disable P01 (KEY01) interrupt select register
D0 SIP00 R/W 0 1 Enable 0 Disable P00 (KEY00) interrupt select register
FF3DH D3 PCP03 R/W 1 1 ↓ (falling edge) 0 ↑ (rising edge) P03 (KEY03) interrupt polarity select register
D2 PCP02 R/W 1 1 ↓ (falling edge) 0 ↑ (rising edge) P02 (KEY02) interrupt polarity select register
D1 PCP01 R/W 1 1 ↓ (falling edge) 0 ↑ (rising edge) P01 (KEY01) interrupt polarity select register
D0 PCP00 R/W 1 1 ↓ (falling edge) 0 ↑ (rising edge) P00 (KEY00) interrupt polarity select register
FF3EH D3 SIP13 R/W 0 1 Enable 0 Disable P13(KEY13) interrupt select register
D2 SIP12 R/W 0 1 Enable 0 Disable P12(KEY12) interrupt select register
D1 SIP11 R/W 0 1 Enable 0 Disable P11(KEY11) interrupt select register
D0 SIP10 R/W 0 1 Enable 0 Disable P10(KEY10) interrupt select register
FF3FH D3 PCP13 R/W 1 1 ↓ (falling edge) 0 ↑ (rising edge) P13(KEY13) interrupt polarity select register
D2 PCP12 R/W 1 1 ↓ (falling edge) 0 ↑ (rising edge) P12(KEY12) interrupt polarity select register
D1 PCP11 R/W 1 1 ↓ (falling edge) 0 ↑ (rising edge) P11(KEY11) interrupt polarity select register
D0 PCP10 R/W 1 1 ↓ (falling edge) 0 ↑ (rising edge) P10(KEY10) interrupt polarity select register
APPENDIX A LIST OF I/O REGISTERS
AP-A-4 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
FF40H–FF42H Clock Timer
Address Register name R/W Default Setting/data Function
FF40H D3 0 (*3) R – (*2) – Unused
D2 0 (*3) R – (*2) – Unused
D1 TMRST (*3) W (Reset) 1 Reset 0 Invalid Clock timer reset (writing)
D0 TMRUN R/W 0 1 Run 0 Stop Clock timer Run/Stop
FF41H D3 TM3 R 0
0H–FH
Clock timer data (16 Hz)
D2 TM2 R 0 Clock timer data (32 Hz)
D1 TM1 R 0 Clock timer data (64 Hz)
D0 TM0 R 0 Clock timer data (128 Hz)
FF42H D3 TM7 R 0
0H–FH
Clock timer data (1 Hz)
D2 TM6 R 0 Clock timer data (2 Hz)
D1 TM5 R 0 Clock timer data (4 Hz)
D0 TM4 R 0 Clock timer data (8 Hz)
FF44H–FF47H Sound Generator
Address Register name R/W Default Setting/data Function
FF44H D3 ENRTM R/W 0 1 1 sec 0 0.5 sec Envelope releasing time selection
D2 ENRST (*3) W (Reset) 1 Reset 0 Invalid Envelope reset (writing)
D1 ENON R/W 0 1 On 0 Off Envelope On/Off
D0 BZE R/W 0 1 Enable 0 Disable Buzzer output enable
FF45H D3 0 (*3) R – (*2) – Unused
D2 BZSTP (*3) W 0 1 Stop 0 Invalid 1-shot buzzer stop (writing)
D1 BZSHT R/W 0 1 Trigger (W)
Busy (R)
0 Invalid (W)
Ready (R)
1-shot buzzer trigger (writing)
1-shot buzzer status (reading)
D0 SHTPW R/W 0 1 125 msec 0 31.25 msec 1-shot buzzer pulse width setting
FF46H D3 0 (*3) R – (*2) – Unused
D2 BZFQ2 R/W 0 7 1170.3 4 2048.0 1 3276.8 Buzzer frequency (Hz) selection
D1 BZFQ1 R/W 0 6 1365.3 3 2340.6 0 4096.0
D0 BZFQ0 R/W 0 5 1638.4 2 2730.7
FF47H D3 0 (*3) R – (*2) – Unused
D2 BDTY2 R/W 0 7 Level 8 4 Level 5 1 Level 2 Buzzer signal duty ratio selection
D1 BDTY1 R/W 0 6 Level 7 3 Level 4 0 Level 1
(max.)
D0 BDTY0 R/W 0 5 Level 6 2 Level 3
FF48H–FF4DH Stopwatch Timer
Address Register name R/W Default Setting/data Function
FF48H D3 0 (*3) R – (*2) – Unused
D2 0 (*3) R – (*2) – Unused
D1 SWDIR R/W 0 1 P00 = Lap
P01 = Run/Stop
0 P00 = Run/Stop
P01 = Lap
Stopwatch direct input switch
D0 EDIR R/W 0 1 Enable 0 Disable Direct input enable
FF49H D3 0 (*3) R – (*2) – Unused
D2 DKM2 R/W 0 7 P10–13 4 P10 1 P02 Key mask selection
D1 DKM1 R/W 0 6 P10–12 3
P02–03,10
0 No mask
D0 DKM0 R/W 0 5 P10–11 2 P02–03
FF4AH D3 LCURF R 0 1 Request 0 No Lap data carry-up request flag
D2 CRNWF R 0 1 Renewal 0 No Capture renewal flag
D1 SWRUN R/W 0 1 Run 0 Stop Stopwatch timer Run/Stop
D0 SWRST (*3) W (Reset) 1 Reset 0 Invalid Stopwatch timer reset (writing)
FF4BH D3 SWD3 R 0
0–9
Stopwatch timer data
BCD (1/1000 sec)
D2 SWD2 R 0
D1 SWD1 R 0
D0 SWD0 R 0
FF4CH D3 SWD7 R 0
0–9
Stopwatch timer data
BCD (1/100 sec)
D2 SWD6 R 0
D1 SWD5 R 0
D0 SWD4 R 0
FF4DH D3 SWD11 R 0
0–9
Stopwatch timer data
BCD (1/10 sec)
D2 SWD10 R 0
D1 SWD9 R 0
D0 SWD8 R 0
APPENDIX A LIST OF I/O REGISTERS
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation AP-A-5
(Rev. 1.1)
FF50H–FF52H LCD Driver
Address Register name R/W Default Setting/data Function
FF50H D3 0 (*3) R – (*2) – Unused
D2 0 (*3) R – (*2) – Unused
D1 DSPC1 R/W 1 3 All on 1 All on LCD display mode selection
D0 DSPC0 R/W 0 2 All off 0 Normal
FF51H D3 STCD R/W 0 1 Static 0 Dynamic LCD drive mode switch
D2 LDUTY2 R/W 0 7 1/8 4 1/7 1 1/4 LCD drive duty selection
D1 LDUTY1 R/W 0 6 1/7 3 1/6 0 1/3
D0 LDUTY0 R/W 0 5 1/8 2 1/5
FF52H D3 LC3 R/W 0
0H(light)–FH(dark)
LCD contrast adjustment
D2 LC2 R/W 0
D1 LC1 R/W 0
D0 LC0 R/W 0
FF58H–FF5CH Serial Interface
Address Register name R/W Default Setting/data Function
FF58H D3 0 (*3) R – (*2) – Unused
D2 ESOUT R/W 0 1 Enable 0 Disable SOUT enable
D1 SCTRG R/W 0 1 Trigger (W)
Run (R)
0 Invalid (W)
Stop (R)
Serial I/F clock trigger (writing)
Serial I/F clock status (reading)
D0 ESIF R/W 0 1 SIF 0 I/O Serial I/F enable (P3 port function selection)
FF59H D3 SCPS1 R/W 0 3 Negative, ↑1 Positive, ↓ Serial I/F clock format selection
(polarity, phase)
D2 SCPS0 R/W 0 2 Negative, ↓0 Positive, ↑
D1 SDP R/W 0 1 MSB first 0 LSB first Serial I/F data input/output permutation
D0 SMOD R/W 0 1 Master 0 Slave Serial I/F mode selection
FF5AH D3 0 (*3) R – (*2) – Unused
D2 0 (*3) R – (*2) – Unused
D1 ESREADY R/W 0 1 SRDY 0 SS SRDY_SS function selection (ENCS = "1")
D0 ENCS R/W 0 1 SRDY_SS 0 P33 SRDY_SS enable (P33 port function selection)
FF5BH D3 SD3 R/W ×
0H–FH
Serial I/F transmit/receive data
(low-order 4 bits)
SD0 = LSB
D2 SD2 R/W ×
D1 SD1 R/W ×
D0 SD0 R/W ×
FF5CH D3 SD7 R/W ×
0H–FH
Serial I/F transmit/receive data
(high-order 4 bits)
SD7 = MSB
D2 SD6 R/W ×
D1 SD5 R/W ×
D0 SD4 R/W ×
FF60H–FF6BH R/F Converter
Address Register name R/W Default Setting/data Function
FF60H D3 RFCNT R/W 0 1 Continuous 0 Normal Continuous oscillation enable
D2 RFOUT R/W 0 1 Enable 0 Disable RFOUT enable
D1 ERF1 R/W 0 3 Ch.1 DC 1 Ch.0 DC R/F conversion selection
D0 ERF0 R/W 0 2 Ch.1 AC 0 I/O
FF61H D3 OVTC R/W 0 1 Overflow error 0 No error Time base counter overflow flag
D2 OVMC R/W 0 1 Overflow error 0 No error Measurement counter overflow flag
D1 RFRUNR R/W 0 1 Run 0 Stop Reference oscillation Run control/status
D0 RFRUNS R/W 0 1 Run 0 Stop Sensor oscillation Run control/status
FF62H D3 MC3 R/W ×
0H–FH
Measurement counter MC0–MC3
MC0 = LSB
D2 MC2 R/W ×
D1 MC1 R/W ×
D0 MC0 R/W ×
FF63H D3 MC7 R/W ×
0H–FH
Measurement counter MC4–MC7
D2 MC6 R/W ×
D1 MC5 R/W ×
D0 MC4 R/W ×
FF64H D3 MC11 R/W ×
0H–FH
Measurement counter MC8–MC11
D2 MC10 R/W ×
D1 MC9 R/W ×
D0 MC8 R/W ×
APPENDIX A LIST OF I/O REGISTERS
AP-A-6 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
Address Register name R/W Default Setting/data Function
FF65H D3 MC15 R/W ×
0H–FH
Measurement counter MC12–MC15
D2 MC14 R/W ×
D1 MC13 R/W ×
D0 MC12 R/W ×
FF66H D3 MC19 R/W ×
0H–FH
Measurement counter MC16–MC19
MC19 = MSB
D2 MC18 R/W ×
D1 MC17 R/W ×
D0 MC16 R/W ×
FF67H D3 TC3 R/W ×
0H–FH
Time base counter TC0–TC3
TC0 = LSB
D2 TC2 R/W ×
D1 TC1 R/W ×
D0 TC0 R/W ×
FF68H D3 TC7 R/W ×
0H–FH
Time base counter TC4–TC7
D2 TC6 R/W ×
D1 TC5 R/W ×
D0 TC4 R/W ×
FF69H D3 TC11 R/W ×
0H–FH
Time base counter TC8–TC11
D2 TC10 R/W ×
D1 TC9 R/W ×
D0 TC8 R/W ×
FF6AH D3 TC15 R/W ×
0H–FH
Time base counter TC12–TC15
D2 TC14 R/W ×
D1 TC13 R/W ×
D0 TC12 R/W ×
FF6BH D3 TC19 R/W ×
0H–FH
Time base counter TC16–TC19
TC19 = MSB
D2 TC18 R/W ×
D1 TC17 R/W ×
D0 TC16 R/W ×
FF70H–FF76H Integer Multiplier
Address Register name R/W Default Setting/data Function
FF70H D3 SR3 R/W ×
0H–FH
Source register (low-order 4 bits)
SR0 = LSB
D2 SR2 R/W ×
D1 SR1 R/W ×
D0 SR0 R/W ×
FF71H D3 SR7 R/W ×
0H–FH
Source register (high-order 4 bits)
SR7 = MSB
D2 SR6 R/W ×
D1 SR5 R/W ×
D0 SR4 R/W ×
FF72H D3 DRL3 R/W ×
0H–FH
Low-order 8-bit destination register
(low-order 4 bits)
DRL0 = LSB
D2 DRL2 R/W ×
D1 DRL1 R/W ×
D0 DRL0 R/W ×
FF73H D3 DRL7 R/W ×
0H–FH
Low-order 8-bit destination register
(high-order 4 bits)
DRL7 = MSB
D2 DRL6 R/W ×
D1 DRL5 R/W ×
D0 DRL4 R/W ×
FF74H D3 DRH3 R/W ×
0H–FH
High-order 8-bit destination register
(low-order 4 bits)
DRH0 = LSB
D2 DRH2 R/W ×
D1 DRH1 R/W ×
D0 DRH0 R/W ×
FF75H D3 DRH7 R/W ×
0H–FH
High-order 8-bit destination register
(high-order 4 bits)
DRH7 = MSB
D2 DRH6 R/W ×
D1 DRH5 R/W ×
D0 DRH4 R/W ×
FF76H D3 NF R 0 1 Negative 0 Positive Negative flag
D2 VF R 0 1 Overflow 0 No Overflow flag
D1 ZF R 0 1 Zero 0 No Zero flag
D0 CALMD R/W 0 1 Division (W)
Run (R)
0 Multiplication (W)
Stop (R)
Calculation mode selection (writing)
Operation status (reading)
APPENDIX A LIST OF I/O REGISTERS
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation AP-A-7
(Rev. 1.1)
FF80H–FF9FH Programmable Timer
Address Register name R/W Default Setting/data Function
FF80H D3 MOD16_A R/W 0 1 16 bits 0 8 bits PTM0–1 16-bit mode selection
D2 EVCNT_A R/W 0 1 Event counter 0 Timer PTM0 counter mode selection
D1 FCSEL_A R/W 0 1 With noise reject 0 No noise reject
PTM0 function selection (for event counter mode)
D0 PLPUL_A R/W 0 1 ↑ (positive) 0 ↓ (negative)
PTM0 pulse polarity selection (event counter mode)
FF81H D3 PTSEL1 R/W 0 1 PWM 0 Normal Programmable timer 1 PWM output selection
D2 PTSEL0 R/W 0 1 PWM 0 Normal Programmable timer 0 PWM output selection
D1 CHSEL_A R/W 0 1 Timer 1 0 Timer 0 PTM0–1 TOUT_A output selection
D0 PTOUT_A R/W 0 1 On 0 Off PTM0–1 TOUT_A output control
FF82H D3 PTRST1 (*3) W – (*2) 1 Reset 0 Invalid Programmable timer 1 reset (reload)
D2 PTRUN1 R/W 0 1 Run 0 Stop Programmable timer 1 Run/Stop
D1 PTRST0 (*3) W – (*2) 1 Reset 0 Invalid Programmable timer 0 reset (reload)
D0 PTRUN0 R/W 0 1 Run 0 Stop Programmable timer 0 Run/Stop
FF84H D3 RLD03 R/W 0
0H–FH
Programmable timer 0 reload data
(low-order 4 bits)
RLD00 = LSB
D2 RLD02 R/W 0
D1 RLD01 R/W 0
D0 RLD00 R/W 0
FF85H D3 RLD07 R/W 0
0H–FH
Programmable timer 0 reload data
(high-order 4 bits)
RLD07 = MSB
D2 RLD06 R/W 0
D1 RLD05 R/W 0
D0 RLD04 R/W 0
FF86H D3 RLD13 R/W 0
0H–FH
Programmable timer 1 reload data
(low-order 4 bits)
RLD10 = LSB
D2 RLD12 R/W 0
D1 RLD11 R/W 0
D0 RLD10 R/W 0
FF87H D3 RLD17 R/W 0
0H–FH
Programmable timer 1 reload data
(high-order 4 bits)
RLD17 = MSB
D2 RLD16 R/W 0
D1 RLD15 R/W 0
D0 RLD14 R/W 0
FF88H D3 PTD03 R 0
0H–FH
Programmable timer 0 data (low-order 4 bits)
PTD00 = LSB
D2 PTD02 R 0
D1 PTD01 R 0
D0 PTD00 R 0
FF89H D3 PTD07 R 0
0H–FH
Programmable timer 0 data (high-order 4 bits)
PTD07 = MSB
D2 PTD06 R 0
D1 PTD05 R 0
D0 PTD04 R 0
FF8AH D3 PTD13 R 0
0H–FH
Programmable timer 1 data (low-order 4 bits)
PTD10 = LSB
D2 PTD12 R 0
D1 PTD11 R 0
D0 PTD10 R 0
FF8BH D3 PTD17 R 0
0H–FH
Programmable timer 1 data (high-order 4 bits)
PTD17 = MSB
D2 PTD16 R 0
D1 PTD15 R 0
D0 PTD14 R 0
FF8CH D3 CD03 R/W 0
0H–FH
Programmable timer 0 compare data
(high-order 4 bits)
CD00 = LSB
D2 CD02 R/W 0
D1 CD01 R/W 0
D0 CD00 R/W 0
FF8DH D3 CD07 R/W 0
0H–FH
Programmable timer 0 compare data
(high-order 4 bits)
CD07 = MSB
D2 CD06 R/W 0
D1 CD05 R/W 0
D0 CD04 R/W 0
FF8EH D3 CD13 R/W 0
0H–FH
Programmable timer 1 compare data
(low-order 4 bits)
CD10 = LSB
D2 CD12 R/W 0
D1 CD11 R/W 0
D0 CD10 R/W 0
FF8FH D3 CD17 R/W 0
0H–FH
Programmable timer 1 compare data
(high-order 4 bits)
CD17 = MSB
D2 CD16 R/W 0
D1 CD15 R/W 0
D0 CD14 R/W 0
APPENDIX A LIST OF I/O REGISTERS
AP-A-8 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
Address Register name R/W Default Setting/data Function
FF90H D3 MOD16_B R/W 0 1 16 bits 0 8 bits PTM2–3 16-bit mode selection
D2 EVCNT_B R/W 0 1 Event counter 0 Timer PTM2 counter mode selection
D1 FCSEL_B R/W 0 1 With noise reject 0 No noise reject
PTM2 function selection (for event counter mode)
D0 PLPUL_B R/W 0 1 ↑ (positive) 0 ↓ (negative)
PTM2 pulse polarity selection (event counter mode)
FF91H D3 PTSEL3 R/W 0 1 PWM 0 Normal Programmable timer 3 PWM output selection
D2 PTSEL2 R/W 0 1 PWM 0 Normal Programmable timer 2 PWM output selection
D1 CHSEL_B R/W 0 1 Timer 3 0 Timer 2 PTM2–3 TOUT_B output selection
D0 PTOUT_B R/W 0 1 On 0 Off PTM2–3 TOUT_B output control
FF92H D3 PTRST3 (*3) W – (*2) 1 Reset 0 Invalid Programmable timer 3 reset (reload)
D2 PTRUN3 R/W 0 1 Run 0 Stop Programmable timer 3 Run/Stop
D1 PTRST2 (*3) W – (*2) 1 Reset 0 Invalid Programmable timer 2 reset (reload)
D0 PTRUN2 R/W 0 1 Run 0 Stop Programmable timer 2 Run/Stop
FF94H D3 RLD23 R/W 0
0H–FH
Programmable timer 2 reload data
(low-order 4 bits)
RLD20 = LSB
D2 RLD22 R/W 0
D1 RLD21 R/W 0
D0 RLD20 R/W 0
FF95H D3 RLD27 R/W 0
0H–FH
Programmable timer 2 reload data
(high-order 4 bits)
RLD27 = MSB
D2 RLD26 R/W 0
D1 RLD25 R/W 0
D0 RLD24 R/W 0
FF96H D3 RLD33 R/W 0
0H–FH
Programmable timer 3 reload data
(low-order 4 bits)
RLD30 = LSB
D2 RLD32 R/W 0
D1 RLD31 R/W 0
D0 RLD30 R/W 0
FF97H D3 RLD37 R/W 0
0H–FH
Programmable timer 3 reload data
(high-order 4 bits)
RLD37 = MSB
D2 RLD36 R/W 0
D1 RLD35 R/W 0
D0 RLD34 R/W 0
FF98H D3 PTD23 R 0
0H–FH
Programmable timer 2 data (low-order 4 bits)
PTD20 = LSB
D2 PTD22 R 0
D1 PTD21 R 0
D0 PTD20 R 0
FF99H D3 PTD27 R 0
0H–FH
Programmable timer 2 data (high-order 4 bits)
PTD27 = MSB
D2 PTD26 R 0
D1 PTD25 R 0
D0 PTD24 R 0
FF9AH D3 PTD33 R 0
0H–FH
Programmable timer 3 data (low-order 4 bits)
PTD30 = LSB
D2 PTD32 R 0
D1 PTD31 R 0
D0 PTD30 R 0
FF9BH D3 PTD37 R 0
0H–FH
Programmable timer 3 data (high-order 4 bits)
PTD37 = MSB
D2 PTD36 R 0
D1 PTD35 R 0
D0 PTD34 R 0
FF9CH D3 CD23 R/W 0
0H–FH
Programmable timer 2 compare data
(low-order 4 bits)
CD20 = LSB
D2 CD22 R/W 0
D1 CD21 R/W 0
D0 CD20 R/W 0
FF9DH D3 CD27 R/W 0
0H–FH
Programmable timer 2 compare data
(high-order 4 bits)
CD27 = MSB
D2 CD26 R/W 0
D1 CD25 R/W 0
D0 CD24 R/W 0
FF9EH D3 CD33 R/W 0
0H–FH
Programmable timer 3 compare data
(low-order 4 bits)
CD30 = LSB
D2 CD32 R/W 0
D1 CD31 R/W 0
D0 CD30 R/W 0
FF9FH D3 CD37 R/W 0
0H–FH
Programmable timer 3 compare data
(high-order 4 bits)
CD37 = MSB
D2 CD36 R/W 0
D1 CD35 R/W 0
D0 CD34 R/W 0
APPENDIX A LIST OF I/O REGISTERS
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation AP-A-9
(Rev. 1.1)
FFE1H–FFFFH Interrupt Controller
Address Register name R/W Default Setting/data Function
FFE1H D3 0 (*3) R – (*2) – Unused
D2 EIRFE R/W 0 1 Enable 0 Mask Interrupt mask register (RFC error)
D1 EIRFR R/W 0 1 Enable 0 Mask Interrupt mask register (RFC REF completion)
D0 EIRFS R/W 0 1 Enable 0 Mask
Interrupt mask register
(RFC SEN completion)
FFE2H D3 0 (*3) R – (*2) – Unused
D2 0 (*3) R – (*2) – Unused
D1 EIPT0 R/W 0 1 Enable 0 Mask Interrupt mask register (PT0 underflow)
D0 EICTC0 R/W 0 1 Enable 0 Mask Interrupt mask register (PT0 compare match)
FFE3H D3 0 (*3) R – (*2) – Unused
D2 0 (*3) R – (*2) – Unused
D1 EIPT1 R/W 0 1 Enable 0 Mask Interrupt mask register (PT1 underflow)
D0 EICTC1 R/W 0 1 Enable 0 Mask Interrupt mask register (PT1 compare match)
FFE4H D3 0 (*3) R – (*2) – Unused
D2 0 (*3) R – (*2) – Unused
D1 EIPT2 R/W 0 1 Enable 0 Mask Interrupt mask register (PT2 underflow)
D0 EICTC2 R/W 0 1 Enable 0 Mask Interrupt mask register (PT2 compare match)
FFE5H D3 0 (*3) R – (*2) – Unused
D2 0 (*3) R – (*2) – Unused
D1 EIPT3 R/W 0 1 Enable 0 Mask Interrupt mask register (PT3 underflow)
D0 EICTC3 R/W 0 1 Enable 0 Mask Interrupt mask register (PT3 compare match)
FFEAH D3 0 (*3) R – (*2) – Unused
D2 0 (*3) R – (*2) – Unused
D1 0 (*3) R – (*2) – Unused
D0 EISIF R/W 0 1 Enable 0 Mask Interrupt mask register (Serial I/F)
FFEBH D3 EIK03 R/W 0 1 Enable 0 Mask Interrupt mask register (KEY03<P03>)
D2 EIK02 R/W 0 1 Enable 0 Mask Interrupt mask register (KEY02<P02>)
D1 EIK01 R/W 0 1 Enable 0 Mask Interrupt mask register (KEY01<P01>)
D0 EIK00 R/W 0 1 Enable 0 Mask Interrupt mask register (KEY00<P00>)
FFECH D3 EIK13 R/W 0 1 Enable 0 Mask Interrupt mask register (KEY13<P13>)
D2 EIK12 R/W 0 1 Enable 0 Mask Interrupt mask register (KEY12<P12>)
D1 EIK11 R/W 0 1 Enable 0 Mask Interrupt mask register (KEY11<P11>)
D0 EIK10 R/W 0 1 Enable 0 Mask Interrupt mask register (KEY10<P10>)
FFEDH D3 EIRUN R/W 0 1 Enable 0 Mask Interrupt mask register (SW direct RUN)
D2 EILAP R/W 0 1 Enable 0 Mask Interrupt mask register (SW direct LAP)
D1 EISW1 R/W 0 1 Enable 0 Mask
Interrupt mask register (Stopwatch 1 Hz)
D0 EISW10 R/W 0 1 Enable 0 Mask
Interrupt mask register (Stopwatch 10 Hz)
FFEEH D3 EIT3 R/W 0 1 Enable 0 Mask Interrupt mask register (Clock timer 16 Hz)
D2 EIT2 R/W 0 1 Enable 0 Mask Interrupt mask register (Clock timer 32 Hz)
D1 EIT1 R/W 0 1 Enable 0 Mask Interrupt mask register (Clock timer 64 Hz)
D0 EIT0 R/W 0 1 Enable 0 Mask Interrupt mask register (Clock timer 128 Hz)
FFEFH D3 EIT7 R/W 0 1 Enable 0 Mask Interrupt mask register (Clock timer 1 Hz)
D2 EIT6 R/W 0 1 Enable 0 Mask Interrupt mask register (Clock timer 2 Hz)
D1 EIT5 R/W 0 1 Enable 0 Mask Interrupt mask register (Clock timer 4 Hz)
D0 EIT4 R/W 0 1 Enable 0 Mask Interrupt mask register (Clock timer 8 Hz)
FFF1H D3 0 (*3) R – (*2) – Unused
D2 IRFE R/W 0 1 Occurred (R)
Reset (W)
0 Not occurred (R)
Invalid (W)
Interrupt factor flag (RFC error)
D1 IRFR R/W 0 Interrupt factor flag (RFC REF completion)
D0 IRFS R/W 0 Interrupt factor flag (RFC SEN completion)
FFF2H D3 0 (*3) R – (*2) – Unused
D2 0 (*3) R – (*2) – Unused
D1 IPT0 R/W 0 1 Occurred (R)
Reset (W)
0 Not occurred (R)
Invalid (W)
Interrupt factor flag (PT0 underflow)
D0 ICTC0 R/W 0 Interrupt factor flag (PT0 compare match)
FFF3H D3 0 (*3) R – (*2) – Unused
D2 0 (*3) R – (*2) – Unused
D1 IPT1 R/W 0 1 Occurred (R)
Reset (W)
0 Not occurred (R)
Invalid (W)
Interrupt factor flag (PT1 underflow)
D0 ICTC1 R/W 0 Interrupt factor flag (PT1 compare match)
FFF4H D3 0 (*3) R – (*2) – Unused
D2 0 (*3) R – (*2) – Unused
D1 IPT2 R/W 0 1 Occurred (R)
Reset (W)
0 Not occurred (R)
Invalid (W)
Interrupt factor flag (PT2 underflow)
D0 ICTC2 R/W 0 Interrupt factor flag (PT2 compare match)
APPENDIX A LIST OF I/O REGISTERS
AP-A-10 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
Address Register name R/W Default Setting/data Function
FFF5H D3 0 (*3) R – (*2) – Unused
D2 0 (*3) R – (*2) – Unused
D1 IPT3 R/W 0 1 Occurred (R)
Reset (W)
0 Not occurred (R)
Invalid (W)
Interrupt factor flag (PT3 underflow)
D0 ICTC3 R/W 0 Interrupt factor flag (PT3 compare match)
FFFAH D3 0 (*3) R – (*2) – Unused
D2 0 (*3) R – (*2) – Unused
D1 0 (*3) R – (*2) – Unused
D0 ISIF R/W 0 1 Occurred (R)
Reset (W)
0 Not occurred (R)
Invalid (W)
Interrupt factor flag (Serial I/F)
FFFBH D3 IK03 R/W 0 1 Occurred (R)
Reset (W)
0 Not occurred (R)
Invalid (W)
Interrupt factor flag (KEY03<P03>)
D2 IK02 R/W 0 Interrupt factor flag (KEY02<P02>)
D1 IK01 R/W 0 Interrupt factor flag (KEY01<P01>)
D0 IK00 R/W 0 Interrupt factor flag (KEY00<P00>)
FFFCH D3 IK13 R/W 0 1 Occurred (R)
Reset (W)
0 Not occurred (R)
Invalid (W)
Interrupt factor flag (KEY13<P13>)
D2 IK12 R/W 0 Interrupt factor flag (KEY12<P12>)
D1 IK11 R/W 0 Interrupt factor flag (KEY11<P11>)
D0 IK10 R/W 0 Interrupt factor flag (KEY10<P10>)
FFFDH D3 IRUN R/W 0 1 Occurred (R)
Reset (W)
0 Not occurred (R)
Invalid (W)
Interrupt factor flag (SW direct RUN)
D2 ILAP R/W 0 Interrupt factor flag (SW direct LAP)
D1 ISW1 R/W 0 Interrupt factor flag
(Stopwatch 1 Hz)
D0 ISW10 R/W 0 Interrupt factor flag
(Stopwatch 10 Hz)
FFFEH D3 IT3 R/W 0 1 Occurred (R)
Reset (W)
0 Not occurred (R)
Invalid (W)
Interrupt factor flag (Clock timer 16 Hz)
D2 IT2 R/W 0 Interrupt factor flag (Clock timer 32 Hz)
D1 IT1 R/W 0 Interrupt factor flag (Clock timer 64 Hz)
D0 IT0 R/W 0 Interrupt factor flag (Clock timer 128 Hz)
FFFFH D3 IT7 R/W 0 1 Occurred (R)
Reset (W)
0 Not occurred (R)
Invalid (W)
Interrupt factor flag (Clock timer 1 Hz)
D2 IT6 R/W 0 Interrupt factor flag (Clock timer 2 Hz)
D1 IT5 R/W 0 Interrupt factor flag (Clock timer 4 Hz)
D0 IT4 R/W 0 Interrupt factor flag (Clock timer 8 Hz)
APPENDIX B PERIPHERAL CIRCUIT BOARDS FOR S1C6F016
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation AP-B-1
(Rev. 1.1)
Appendix B Peripheral Circuit Boards
for S1C6F016
This section describes how to use the Peripheral Circuit Boards for the S1C6F016 (S5U1C63000P6 and
S5U1C6F016P2), which provide emulation functions when mounted on the debugging tool for the S1C63 Family of
4-bit single-chip microcomputers, the ICE (S5U1C63000H2/S5U1C63000H6).
This description of the S1C63 Family Peripheral Circuit Board (S5U1C63000P6) provided in this document assumes
that circuit data for the S1C6F016 has already been downloaded to the board. For information on downloading vari-
ous circuit data, please see Section B.3. Please refer to the S5U1C63000H manual for detailed information on the
ICE functions and method of use.
Note: The S5U1C63000P1 cannot be used for developing the S1C6F016 applications.
Names and Functions of Each PartB.1
S5U1C63000P6B.1.1
The S5U1C63000P6 board provides peripheral circuit functions of S1C63 Family microcomputers other than the
core CPU. The following explains the names and functions of each part of the S5U1C63000P6 board.
Xtal
OSC3 (CR) Adj
OSC1 (CR) Adj
Ceramic
CN0 GND
GND
FOSC1(CR)
FOSC3(CR)
ADOSCA fCera
SN0 ST1 ST0
RESET
VC5
ProgNorm PRG
S5U1C63000P6
VSVD
16 1
2
VC5
VLCD(V2V/V3V)
4
6
8
10
12
14
LED1
LED3
LED5
LED7
LED9
LED11
LED13
LED15
LED16
E
IOSEL2
D
CPA1
CLK
LCLK32K
(1)
(3)
(10)(8)(7)
(6)
(5)
(9) (2)
(8)
(4)
CN3 (not used) CN2 CN1
1.1.1 S5U1C63000P6Figure B.
(1) VLCD
This control is used to adjust the LCD drive voltage when an external power supply is selected by mask option
for the LCD drive power supply.
(2) VSVD
Unused
The switches on the S5U1C6F016P2 board are used to verify the operation of the supply voltage detection func-
tion (SVD).
APPENDIX B PERIPHERAL CIRCUIT BOARDS FOR S1C6F016
AP-B-2 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
(3) Register monitor LEDs/pins
These LEDs and pins correspond one-to-one to the registers listed below. The LED lights when the register is set
to "1" and goes out when the register is set to "0." The monitor pins output a high level when the register is "1"
and a low level when the register is "0."
1.1.1 Register monitor LEDs/pinsTable B.
Monitor
pins
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
1
3
5
7
9
11
13
15
2
4
6
8
10
12
14
16
LED
No. pin LED Register = "1" Register = "0"
Name Name
1 DONE – Initialization of this board has com-
pleted normally.
During initialization
2 OSCC OSC3 oscillation: On OSC3 oscillation: Off
3 CLKCHG CPU clock: OSC3 CPU clock: OSC1
4 VCSEL – FF02H•D2 = "1"
(general-purpose register)
FF02H•D2 = "0"
(general-purpose register)
5 DBON – FF02H•D0 = "1"
(general-purpose register)
FF02H•D0 = "0"
(general-purpose register)
6 VCHLMOD VC regulator heavy load protection
mode: On
VC regulator heavy load protection
mode: Off
7 VDHLMOD VD regulator heavy load protection
mode: On
VD regulator heavy load protection
mode: Off
8 VCREF VC regulator reference voltage: VC2 VC regulator reference voltage: VC1
9 LPWR VC regulator: On VC regulator: Off
10 SVDON SVD circuit: On SVD circuit: Off
11 SVDS0 SVD criteria voltage level
12 SVDS1
13 SVDS2
14 SVDS3
15 SVDS4 – FF05H•D2 = "1"
(general-purpose register)
FF05H•D2 = "0"
(general-purpose register)
16 – – – –
(4) CR oscillation frequency adjusting control
This control is used to adjust the OSC3 oscillation frequency. This function is effective only when CR oscillation
is selected for the OSC3 oscillation circuit by mask option. The oscillation frequency can be adjusted in the range
of about 100 kHz to 8 MHz. Note that the actual IC may not operate throughout this frequency range. Refer to
"Electrical Characteristics" to select the appropriate operating frequency.
Not used
Not used
OSC3 rough adjustment
OSC3 fine adjustment
1.1.2 CR oscillation frequency adjusting controlFigure B.
When ceramic oscillation is selected for the OSC3 oscillation circuit by mask option, the OSC3 frequency is fixed
at 4.1943 MHz in this board .
(5) CR oscillation frequency monitor pins
These pins are used to monitor the clock waveform from the CR oscillation circuit with an oscilloscope. Note that
the monitor pin always outputs a clock regardless of whether the oscillation is enabled via software or not.
OSC3 monitor pin (red)
Not used
GND pin (black)
RESET
1.1.3 CR oscillation frequency monitor pinsFigure B.
(6) RESET switch
This switch initializes the internal circuits of this board and feeds a reset signal to the ICE.
(7) External part connecting socket
Unused
APPENDIX B PERIPHERAL CIRCUIT BOARDS FOR S1C6F016
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation AP-B-3
(Rev. 1.1)
(8) CLK and PRG switches
If power to the ICE is shut down before downloading circuit data is completed, the circuit configuration in this
board will remain incomplete and the debugger may not be able to start after the ICE is turned on again.
In this case, temporarily turn the ICE off and set the CLK switch to the 32K position and the PRG switch to the
Prog position, then turn the ICE on again. This should allow the debugger to start up, allowing you to download
circuit data. After the circuit data has downloaded, temporarily turn the ICE off and reset the CLK and PRG
switch to the LCLK and the Norm position, respectively. Then turn the ICE on again.
(9) IOSEL2
When downloading circuit data, set IOSEL2 to the "E" position. Otherwise, set to the "D" position.
(10) VC5
This control allows fine adjustment of the LCD drive voltage when an internal power supply is selected by mask
option. Note, however, that the LCD drive voltage of the actual IC must be controlled using the LCD contrast
adjustment register.
S5U1C6F016P2B.1.2
The S5U1C6F016P2 board provides the R/F converter function that supports resistive sensors such as a thermistor
and resistive humidity sensors, the SVD function, and the P50–P53 port inputs/outputs.
The following explains the names and functions of each part of the S5U1C6F016P2 board.
RFOUT
SEN0
REF0
RFIN0
GND
HUD
SEN1
REF1
RFIN1
GND
CH 0 SW1
SW2
LED1
CH 1
CN1
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
0
(1) (2)
(4)
(5)
(3)
1.2.1 S5U1C6F016P2Figure B.
(1) R/F converter monitor pins and external part connecting socket (Channel 0)
These monitor pins are used to check the operation of R/F converter channel 0. The socket is used to connect
external resistors and a capacitor for R/F conversion. Mount resistors and a capacitor on the platform attached
with the S5U1C6F016P2 and then connect it to the onboard socket.
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
Connecting a DC-bias
resistive sensor (e.g. thermistor)
Capacitor
Reference resistor
Sensor (resistor)
RFOUT
SEN0
REF0
RFIN0
GND
CH 0
1.2.2 R/F converter monitor pins and external part connecting socket (Channel 0)Figure B.
APPENDIX B PERIPHERAL CIRCUIT BOARDS FOR S1C6F016
AP-B-4 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
(2) R/F converter monitor pins and external part connecting socket (Channel 1)
These monitor pins are used to check the operation of R/F converter channel 1. The socket is used to connect
external resistors and a capacitor for R/F conversion. Mount resistors and a capacitor on the platform attached
with the S5U1C6F016P2 and then connect it to the onboard socket.
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
HUD
SEN1
REF1
RFIN1
GND
CH 1
Capacitor
Reference
resistor
Sensor (resistor)
Connecting an AC-bias
resistive humidity sensor
The sensor connect position changes according to the sensor type to be used.
Do not mount an AC bias sensor and a DC bias sensor at the same time as it causes a malfunction.
Capacitor
Reference
resistor
Sensor (resistor)
Connecting a DC-bias
resistive sensor (e.g. thermistor)
1.2.3 R/F converter monitor pins and external part connecting socket (Channel 1)Figure B.
(3) CN1 (P5 I/O connector)
This is a user connector to input/output the P50 to P53 port signals. The P50 to P53 terminals of the actual IC
are shared with the terminals for R/F converter channel 0. The S5U1C6F016P2 board provides this connector
separated with the R/F converter socket and monitor pins shown in (1) above. Therefore, be sure to leave this
connector open when R/F converter channel 0 is used. Furthermore, do not use this connector when the P50 to
P53 ports are switched to SEG outputs by mask option.
(4) Supply voltage level setting switches for SVD (SW1, SW2)
These switches are used to set a supply voltage level for verifying the SVD operation. Table B.1.2.1 shows the
relationship between the switch settings and the SVD control register. Note that these switches do not change the
actual power supply voltage. These switches are intended to be used only for changing the detection results to
debug whether the SVD routine works normally or not.
1.2.1 Relationship between SW1/SW2 settings and SVDS registerTable B.
Switch settings Supply voltage emulation level
SW1 SW2
0 DETECTION Voltage level < (SVDS[3:0] = 0)
1 DETECTION (SVDS[3:0] = 0) ≤ Voltage level < (SVDS[3:0] = 1)
2 DETECTION (SVDS[3:0] = 1) ≤ Voltage level < (SVDS[3:0] = 2)
3 DETECTION (SVDS[3:0] = 2) ≤ Voltage level < (SVDS[3:0] = 3)
4 DETECTION (SVDS[3:0] = 3) ≤ Voltage level < (SVDS[3:0] = 4)
5 DETECTION (SVDS[3:0] = 4) ≤ Voltage level < (SVDS[3:0] = 5)
6 DETECTION (SVDS[3:0] = 5) ≤ Voltage level < (SVDS[3:0] = 6)
7 DETECTION (SVDS[3:0] = 6) ≤ Voltage level < (SVDS[3:0] = 7)
8 DETECTION (SVDS[3:0] = 7) ≤ Voltage level < (SVDS[3:0] = 8)
9 DETECTION (SVDS[3:0] = 8) ≤ Voltage level < (SVDS[3:0] = 9)
A DETECTION (SVDS[3:0] = 9) ≤ Voltage level < (SVDS[3:0] = 0AH)
B DETECTION (SVDS[3:0] = 0AH) ≤ Voltage level < (SVDS[3:0] = 0BH)
C DETECTION (SVDS[3:0] = 0BH) ≤ Voltage level < (SVDS[3:0] = 0CH)
D DETECTION (SVDS[3:0] = 0CH) ≤ Voltage level < (SVDS[3:0] = 0DH)
E DETECTION (SVDS[3:0] = 0DH) ≤ Voltage level < (SVDS[3:0] = 0EH)
F DETECTION (SVDS[3:0] = 0EH) ≤ Voltage level < (SVDS[3:0] = 0FH)
– MAX (SVDS[3:0] = 0FH) < Voltage level
(5) SVD result LED (LED1)
This LED indicates the SVD results according to the SW1 and SW2 settings. The LED lights when the voltage
level set using the switches is lower than the level set using the SVDS register (SVDDT = "1").
APPENDIX B PERIPHERAL CIRCUIT BOARDS FOR S1C6F016
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation AP-B-5
(Rev. 1.1)
Connecting to the Target SystemB.2
This section explains how to connect the target system.
First insert the S5U1C63000P6 board into the second upper slot of the ICE and the S5U1C6F016P2 board into the
top slot. Download the circuit data to the S5U1C63000P6 board before installing the S5U1C6F016P2 board if the
S5U1C63000P6 board does not include the correct circuit data. See Section B.3 for downloading circuit data.
S5U1C63000H6
DIAG LC2 LC1
OFF ON
S5U1C6F016P2
S5U1C63000P6
2.1 Installing the peripheral circuit boards to the ICEFigure B.
Installing the S5U1C63000P6/6F016P2 board
Set the jig included with the ICE into position as
shown in Figure B.2.2. Using this jig as a lever, push
it toward the inside of the board evenly on the left and
right sides. After confirming that the board has been
firmly fitted into the internal slot of the ICE, remove
the jig.
2.2 Installing the board Figure B.
Dismounting the S5U1C63000P6/6F016P2 board
Set the jig included with the ICE into position as
shown in Figure B.2.3. Using this jig as a lever, push
it toward the outside of the board evenly on the left
and right sides. After confirming that the board has
been dismounted from the backboard connector, pull
the board out of the ICE.
2.3 Dismounting the board Figure B.
To connect the S5U1C63000P6 and S5U1C6F016P2 to the target system, use the I/O connecting cables supplied with
these boards. Take care when handling the connectors, since they conduct electrical power (VDD = +3.3 V).
Board
Board
APPENDIX B PERIPHERAL CIRCUIT BOARDS FOR S1C6F016
AP-B-6 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
TRGOUT
STOPOUT
TRC IN
BRK IN
GND
DIAG
OFF ON
S5U1C63000H6 EPSON
SLP/HLT
EMU
POWER
LC2 LC1
LC1-1
(50 pins)
CN2-1
(50 pins)
Target board
S5U1C63000H6 LC1
(100 pins)
CN1-1
(40 pins)
S5U1C63000P6 CN1
(80 pins)
S5U1C6F016P2 CN1
(10 pins)
CN1-2
(40 pins)
CN1
(10 pins)
LC1-2
(50 pins)
LC1-1 CN1-1 CN1-2CN1 LC1-2CN2-1
(When SEG
DC output is used)
S5U1C63000P6 CN2
(100 pins)
2.4 Connecting the S5U1C63000P6 and S5U1C6F016P2 to the target systemFigure B.
2.1 S5U1C63000P6 CN1 connector pin assignmentTable B.
40-pin CN1-1 connector 40-pin CN1-2 connector
No. Pin name No. Pin name No. Pin name No. Pin name
1 VDD (= 3.3 V) 21 VDD (= 3.3 V) 1 VDD (= 3.3 V) 21 VDD (= 3.3 V)
2 VDD (= 3.3 V) 22 VDD (= 3.3 V) 2 VDD (= 3.3 V) 22 VDD (= 3.3 V)
3 Cannot be connected 23 P20 3 Cannot be connected 23 Cannot be connected
4 Cannot be connected 24 P21 4 Cannot be connected 24 Cannot be connected
5 Cannot be connected 25 P22 5 Cannot be connected 25 Cannot be connected
6 Cannot be connected 26 P23 6 Cannot be connected 26 Cannot be connected
7 Cannot be connected 27 P30 7 Cannot be connected 27 Cannot be connected
8 Cannot be connected 28 P31 8 Cannot be connected 28 Cannot be connected
9 Cannot be connected 29 P32 9 Cannot be connected 29 Cannot be connected
10 Cannot be connected 30 P33 10 Cannot be connected 30 Cannot be connected
11 VSS 31 VSS 11 VSS 31 VSS
12 VSS 32 VSS 12 VSS 32 VSS
13 P00 33 P40 13 Cannot be connected 33 Cannot be connected
14 P01 34 P41 14 Cannot be connected 34 Cannot be connected
15 P02 35 P42 15 Cannot be connected 35 Cannot be connected
16 P03 36 P43 16 Cannot be connected 36 Cannot be connected
17 P10 37 Cannot be connected 17 Cannot be connected 37 Cannot be connected
18 P11 38 Cannot be connected 18 Cannot be connected 38 RESET
19 P12 39 VSS 19 Cannot be connected 39 VSS
20 P13 40 VSS 20 Cannot be connected 40 VSS
APPENDIX B PERIPHERAL CIRCUIT BOARDS FOR S1C6F016
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation AP-B-7
(Rev. 1.1)
2.2 S5U1C63000P6 CN2 connector pin assignmentTable B.
50-pin CN2-1 connector 50-pin CN2-2 connector
No. Pin name No. Pin name No. Pin name No. Pin name
1 VDD (= 3.3 V) 26 SEG19 (DC) 1 VDD (= 3.3 V) 26 Cannot be connected
2 VDD (= 3.3 V) 27 SEG20 (DC) 2 VDD (= 3.3 V) 27 Cannot be connected
3 SEG0 (DC) 28 SEG21 (DC) 3 Cannot be connected 28 Cannot be connected
4 SEG1 (DC) 29 SEG22 (DC) 4 Cannot be connected 29 Cannot be connected
5 SEG2 (DC) 30 SEG23 (DC) 5 Cannot be connected 30 Cannot be connected
6SEG3 (DC) 31 VSS 6 Cannot be connected 31 VSS
7 SEG4 (DC) 32 VSS 7 Cannot be connected 32 VSS
8 SEG5 (DC) 33 SEG24 (DC) 8 Cannot be connected 33 Cannot be connected
9 SEG6 (DC) 34 SEG25 (DC) 9 Cannot be connected 34 Cannot be connected
10 SEG7 (DC) 35 SEG26 (DC) 10 Cannot be connected 35 Cannot be connected
11 VSS 36 SEG27 (DC) 11 VSS 36 Cannot be connected
12 VSS 37 SEG28 (DC) 12 VSS 37 Cannot be connected
13 SEG8 (DC) 38 SEG29 (DC) 13 Cannot be connected 38 Cannot be connected
14 SEG9 (DC) 39 SEG30 (DC) 14 Cannot be connected 39 Cannot be connected
15 SEG10 (DC) 40 SEG31 (DC) 15 Cannot be connected 40 Cannot be connected
16 SEG11 (DC) 41 VDD (= 3.3 V) 16 Cannot be connected 41 VDD (= 3.3 V)
17 SEG12 (DC) 42 VDD (= 3.3 V) 17 Cannot be connected 42 VDD (= 3.3 V)
18 SEG13 (DC) 43 SEG32 (DC) 18 Cannot be connected 43 Cannot be connected
19 SEG14 (DC) 44 SEG33 (DC) 19 Cannot be connected 44 Cannot be connected
20 SEG15 (DC) 45 SEG34 (DC) 20 Cannot be connected 45 Cannot be connected
21 VDD (= 3.3 V) 46 SEG35 (DC) 21 VDD (= 3.3 V) 46 Cannot be connected
22 VDD (= 3.3 V) 47 Cannot be connected 22 VDD (= 3.3 V) 47 Cannot be connected
23 SEG16 (DC) 48 Cannot be connected 23 Cannot be connected 48 Cannot be connected
24 SEG17 (DC) 49 Cannot be connected 24 Cannot be connected 49 Cannot be connected
25 SEG18 (DC) 50 Cannot be connected 25 Cannot be connected 50 Cannot be connected
* The CN2-1 connector outputs the signals from the SEG pins that have been configured as DC outputs by mask option.
Do not connect anything to the SEG pins that have been configured as LCD drive outputs.
2.3 S5U1C63000H6 LC1 connector pin assignmentTable B.
50-pin LC1-1 connector 50-pin LC1-2 connector
No. Pin name No. Pin name No. Pin name No. Pin name
1 COM0 26 SEG17 1 SEG42 26 Cannot be connected
2 COM1 27 SEG18 2 SEG43 27 Cannot be connected
3 COM2 28 SEG19 3 SEG44 28 Cannot be connected
4 COM3 29 SEG20 4 SEG45 29 Cannot be connected
5 COM4 30 SEG21 5 SEG46 30 Cannot be connected
6 COM5 31 SEG22 6 SEG47 31 Cannot be connected
7 COM6 32 SEG23 7 SEG48 32 Cannot be connected
8 COM7 33 SEG24 8 SEG49 33 Cannot be connected
9 SEG0 34 SEG25 9 SEG50 34 Cannot be connected
10 SEG1 35 SEG26 10 SEG51 35 Cannot be connected
11 SEG2 36 SEG27 11 SEG52 36 Cannot be connected
12 SEG3 37 SEG28 12 SEG53 37 Cannot be connected
13 SEG4 38 SEG29 13 SEG54 38 Cannot be connected
14 SEG5 39 SEG30 14 SEG55 39 Cannot be connected
15 SEG6 40 SEG31 15 Cannot be connected 40 Cannot be connected
16 SEG7 41 SEG32 16 Cannot be connected 41 Cannot be connected
17 SEG8 42 SEG33 17 Cannot be connected 42 Cannot be connected
18 SEG9 43 SEG34 18 Cannot be connected 43 Cannot be connected
19 SEG10 44 SEG35 19 Cannot be connected 44 Cannot be connected
20 SEG11 45 SEG36 20 Cannot be connected 45 Cannot be connected
21 SEG12 46 SEG37 21 Cannot be connected 46 Cannot be connected
22 SEG13 47 SEG38 22 Cannot be connected 47 Cannot be connected
23 SEG14 48 SEG39 23 Cannot be connected 48 Cannot be connected
24 SEG15 49 SEG40 24 Cannot be connected 49 Cannot be connected
25 SEG16 50 SEG41 25 Cannot be connected 50 Cannot be connected
APPENDIX B PERIPHERAL CIRCUIT BOARDS FOR S1C6F016
AP-B-8 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
2.4 S5U1C6F016P2 CN1 connector pin assignmentTable B.
10-pin CN1 connector
No. Pin name
1 VDD (= 3.3 V)
2 VDD (= 3.3 V)
3 P50
4 P51
5 P52
6 P53
7 Cannot be connected
8 Cannot be connected
9 VSS
10 VSS
Downloading to S5U1C63000P6B.3
Note: The S1C6F016 circuit data is available only for the S5U1C63000P6, and it cannot be downloaded
to the previous S5U1C63000P1 board.
Downloading Circuit Data – when new ICE (S5U1C63000H2/S5U1C63000H6) is used
The S5U1C63000P6 board comes with the FPGA that contains factory inspection data, therefore the circuit data
for the model to be used should be downloaded. The following explains the downloading procedure.
(1) Remove the ICE (S5U1C63000H2/S5U1C63000H6) top cover and then set the DIP switch "IOSEL2" on the
S5U1C63000P6 board to the "E" position.
(2) Connect the ICE to the host PC. Then turn the host PC and ICE on.
(3) Invoke the debugger included in the assembler package (ver. 5 or later for the S5U1C63000H2, ver. 9 or later
for the S5U1C63000H6). For how to use the ICE and debugger, refer to the manuals supplied with the ICE
and assembler package.
(4) Download the circuit data file (.mot) corresponding to the model by entering the following commands in the
command window.
>XFER (erase all)
>XFWR <file name> (download the specified file)*
>XFCP <file name> (compare the specified file and downloaded data)
*
The downloading takes about 15 minutes in the S5U1C63000H2 or about 3 minutes in the
S5U1C63000H6.
(5) Terminate the debugger and then turn the ICE off.
(6) Set the DIP switch "IOSEL2" on the S5U1C63000P6 board to the "D" position.
(7) Turn the ICE on and invoke the debugger again. Debugging can be started here.
Usage PrecautionsB.4
To ensure correct use of the peripheral circuit board, please observe the following precautions.
Operational precautions B.4.1
(1) Before inserting or removing cables, turn off power to all pieces of connected equipment.
(2) Do not turn on power or load mask option data if all of the I/O ports (P00–P03) are held high. Doing so may
activate the multiple key entry reset function.
(3) Before debugging, always be sure to load mask option data.
APPENDIX B PERIPHERAL CIRCUIT BOARDS FOR S1C6F016
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation AP-B-9
(Rev. 1.1)
Differences with the actual ICB.4.2
(1) Differences in I/O
<Interface power supply>
This tool and target system interface voltage is set to +3.3 V. To obtain the same interface voltage as in the actual
IC, attach a circuit such as a level shifter on the target system side to accommodate the required interface volt-
age.
<Output port drive capability>
The drive capability of each output port on this tool is higher than that of the actual IC. When designing application
system and software, refer to "Electrical Characteristics" to confirm each output port’s drive capability.
<Port protective diode>
All I/O ports incorporate a protective diode for VDD and VSS, and the interface signals between this tool and the
target system are set to +3.3 V. Therefore, this tool and the target system cannot be interfaced with voltages ex-
ceeding VDD by setting the output ports for open-drain mode.
<Pull-down resistance value>
The pull-down resistance values on this tool are set to 220 kΩ which differ from those for the actual IC. For the
resistance values on the actual IC, refer to "Electrical Characteristics."
Note that when using pull-down resistors to pull the input pins low, the input pins may require a certain period to
reach a valid low level. Exercise caution if a key matrix circuit is configured using a combination of output and
input ports, since fall delay times on these input ports differ from those of the actual IC.
<Schmitt input>
The P00–P03 and P10–P13 ports of the actual IC can be configured to Schmitt level input interface. The P20–P23,
P30–P33, P40–P43, and P50–P53 ports support Schmitt level input interface only. This tool supports CMOS level
interface only and does not supports Schmitt inputs.
(2) Differences in current consumption
The amount of current consumed by this tool is different significantly from that of the actual IC. Inspecting the
LEDs on S5U1C63000P6 may help you keep track of approximate current consumption. The following factors/
components greatly affect device current consumption:
<Those which can be verified by LEDs and monitor pins>
(a) Run and Halt execution ratio (verified by LEDs and monitor pins on the ICE)
(b) OSC3 oscillation on/off circuit (OSCC)
(c) CPU clock select circuit (CLKCHG)
(d) SVD circuit on/off circuit (SVDON)
<Those that can only be counteracted by system or software>
(e) Current consumed by the internal pull-down resistors
(f) Input ports in a floating state
(3) Functional precautions
<LCD driver>
• Use the LC1 connector (max. 56SEG × 8COM) on the ICE (S5U1C63000H2/S5U1C63000H6) to drive an
LCD panel. Do not connect anything to the connector pins shown below.
- Unused SEG pins
- SEG pins configured for DC output by mask option (Use the S5U1C63000P6 CN2 connector.)
- Pins configured for I/O port or R/F converter (SEG36–SEG55)
For other precautions on LCD drive outputs, refer to the ICE manual.
APPENDIX B PERIPHERAL CIRCUIT BOARDS FOR S1C6F016
AP-B-10 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
<SVD circuit>
• The SVD function in this tool sets the detection results by comparing the SVDS[3:0] register value with the
settings of the SW1 and SW2 on S5U1C6F016P2 without changing the supply voltage.
• There is a finite delay time from when the power to the SVD circuit turns on until actual detection of the volt-
age. There is no delay in this tool, which differs from that of the actual IC. Refer to "Electrical Characteristics"
when setting the appropriate wait time for the actual IC.
<Oscillation circuit>
• A wait time is required before oscillation stabilizes after the OSC3 oscillation control circuit (OSCC) is turned
on. In this tool, even when OSC3 oscillation is changed (CLKCHG) without a wait time, OSC3 will function
normally. Refer to "Electrical Characteristics" when setting the appropriate wait time for the actual IC.
• Use separate instructions to switch the clock from OSC3 to OSC1 and to turn off the OSC3 oscillation circuit.
If these operations are executed simultaneously with a single instruction, although this tool functions normally,
may not function properly in the actual IC.
• Because the logic level of the oscillation circuit is high, the timing at which the oscillation starts in this tool
differs from that of the actual IC.
• This tool includes oscillation circuits for OSC1 and OSC3. Note that the OSC3 oscillation circuit in this tool
can generate the OSC3 clock even if no resonator is connected.
• The oscillation frequencies in this tool are as follows:
- OSC1 oscillation circuit (crystal oscillation): fixed at 32.768 kHz
- OSC3 oscillation circuit (ceramic option is selected): 4.1943 MHz (crystal oscillation)
- OSC3 oscillation circuit (CR option is selected): about 100 kHz to 8 MHz (CR oscillation)
<Access to undefined address space>
If any undefined space in the S1C6F016's internal ROM/RAM or I/O is accessed for data read or write opera-
tions, the read/written value is indeterminate. Additionally, it is important to remain aware that indeterminate state
differs between this tool and the actual IC. Note that the ICE incorporates the program break function caused by
accessing to an undefined address space.
<Reset circuit>
Keep in mind that the operation sequence from when the ICE and the peripheral circuit boards (S5U1C63000P6
and S5U1C6F016P2) are powered on until the time at which the program starts running differs from the se-
quence from when the actual IC is powered on till the program starts running. This is because S5U1C63000P6
becomes capable of operating as a debugging system after the user program and optional data are downloaded.
When operating the ICE after placing it in free-running mode*, always apply a system reset. A system reset can
be performed by pressing the reset switch on S5U1C63000P6, by a reset pin input, or by holding the input ports
high simultaneously. (* Free running mode: supported by S5U1C63000H1/2 only)
<I/O ports>
Do not set the P0x ports used for multiple key entry reset to output mode as this tool may be reset.
<R/F converter>
• The R/F converter function is implemented using the S1C6F016 chip included in the S5U1C6F016P2 board.
• If the debugger makes program execution to break while the R/F converter is counting the oscillation, the R/F
converter does not stop counting. Note that the R/F converter will not able to load a proper result if program
execution is resumed from that point.
• The following shows the oscillation characteristics (reference value) of the R/F converter on the
S5U1C6F016P2:
APPENDIX B PERIPHERAL CIRCUIT BOARDS FOR S1C6F016
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation AP-B-11
(Rev. 1.1)
R/F converter oscillation frequency - capacitance characteristic (reference value)
Capacitance [pF]
Oscillation frequency [Hz]
470 1,000 2,200 4,700
1,000,000
100,000
10,000
1,000
100
10
1
R = 50 kΩ
R/F converter oscillation frequency - resistance characteristic (reference value)
Resistance [kΩ]
Oscillation frequency [Hz]
110 100 1,000
1,000,000
100,000
10,000
1,000
100
10
1
C = 1000 pF
APPENDIX B PERIPHERAL CIRCUIT BOARDS FOR S1C6F016
AP-B-12 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
Product SpecificationsB.5
Specifications of S5U1C63000P6B.5.1
S5U1C63000P6
Dimension: 254 mm (wide) × 144.8 mm (depth) × 16 mm (height) (including screws)
Weight: Approx. 250 g
Power supply: DC 5 V ± 5%, less than 1 A (supplied from ICE main unit)
I/O connection cable (80-pin)
S5U1C63000P6 connector: KEL8830E-080-170L-F
Cable connector (80-pin): KEL8822E-080-171-F
Cable connector (40-pin): 3M7940-6500SC 1 pair
Cable: 40-conductor flat cable (1 pair)
Interface: CMOS interface (3.3 V)
Length: Approx. 40 cm
I/O connection cable (100-pin)
S5U1C63000P6 connector: KEL8830E-100-170L-F
Cable connector (100-pin): KEL8822E-100-171-F
Cable connector (50-pin): 3M7950-6500SC 1 pair
Cable: 50-conductor flat cable (1 pair)
Interface: CMOS interface (3.3 V)
Length: Approx. 40 cm
Accessories
40-pin connector for connecting to target system: 3M3432-6002LCPL × 2
50-pin connector for connecting to target system: 3M3433-6002LCPL × 2
Specifications of S5U1C6F016P2B.5.2
S5U1C6F016P2
Dimension: 254 mm (width) × 144.8 mm (depth) × 13 mm (height) (including screws)
Weight: Approx. 170 g
Power supply: DC 5 V ± 5%, less than 50 mA
(supplied from ICE main unit and converted into 3.3 V by the onboard regulator)
I/O connection cable (10-pin)
S5U1C6F016P2 connector: 3M3654-5002-PL
Cable connector (10-pin): 3M7910-6500SC
Cable: 10-conductor flat cable
Interface: CMOS interface (3.3 V)
Length: Approx. 40 cm
Accessories
10-pin connector for connecting to target system: 3M3662-6002LCPL × 1
Discreet platform (for mounting external resistors and capacitors of the R/F converter): DIS12-016-403 (KEL) × 2
APPENDIX C FLASH EEPROM PROGRAMMING
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation AP-C-1
(Rev. 1.1)
Appendix C Flash EEPROM Programming
Outline of Writing ToolsC.1
The S1C6F016 Flash EEPROM programming tools are available for two interfaces: USB interface and RS-232C
interface.
These Flash EEPROM writers feature smaller size and weight and are operable with the same power supply as the
microcomputer, this makes it possible to simply configure an on-board Flash EEPROM programming environment.
USB interface type
• USB-Serial On Board Writer (product name: S5U1C88000W4)
• On Board Writer Control Software (OBPW63.EXE, RW6F016.INI) *
• USB-Serial conversion driver *
Operating voltage: 3.3 V ± 0.3 V (The power supply for the target can be used.)
PC interface: USB Ver. 1.1
Note: When using a USB hub to connect the USB-Serial On Board Writer to the PC, the USB hub should
be driven with an external power supply. So use a USB hub that operates with an external power
supply.
RS-232C interface type
• On Board Writer (product name: S5U1C88000W3)
• On Board Writer Control Software (OBPW63.EXE, RW6F016.INI) *
Operating voltage: 3.3 V ± 0.3 V (The power supply for the target can be used.)
PC interface: EIA-RS-232C
* The On Board Writer Control Software and USB-Serial conversion driver are included in the S1C63 Family As-
sembler Package 2 (S5U1C63000A2) or later.
The On Board Writer Control Software (OBPW63.EXE, RW6F016.INI) supports both USB interface type and
RS-232C interface type Flash EEPROM writers.
Serial ProgrammingC.2
Serial Programming EnvironmentC.2.1
Prepare a personal computer system as a host computer and the data for writing into the built-in Flash microcomputer.
(1) Personal computer
• IBM-PC/AT or compatible with a USB port or RS-232C port
(2) OS
• Windows 2000/XP English or Japanese version
(3) Flash EEPROM writing tools
• S5U1C88000W4 (USB interface type) package or S5U1C88000W3 (RS-232C interface type) package
• On Board Writer Control Software (OBPW63.EXE, RW6F016.INI) *
• USB-Serial conversion driver (required only when the USB-Serial On Board Writer is used) *
* The On Board Writer Control Software and USB-Serial conversion driver are included in the S1C63 Family
Assembler Package 2 (S5U1C63000A2) or later.
APPENDIX C FLASH EEPROM PROGRAMMING
AP-C-2 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
(4) User data (program file, data file for data ROM, and segment option HEX file)
Execute the HEX converter hx63 to create the program files (C3xxxyyy.HSA, C3xxxyyy.LSA) and data file for
the data ROM (C3xxxyyy.CSA) from the object file (C3xxxyyy.ABS). Refer to the "S5U1C63000A Manual" for
details of the HEX converter.
C3xxxyyy.ABS
C3xxxyyy.HSA C3xxxyyy.CSAC3xxxyyy.LSA
Object file
Program files
Data file
for data ROM
Execute the HEX Data Converter
in the S5U1C63000Axx development system
2.1.1 hx63 execution flowFigure C.
Assign the display memory to the LCD output terminals by executing the segment option generator winsog to
create the segment option HEX file (C3xxxyyy.SSA)*. Refer to the "S5U1C63000A Manual" for details of the
segment option generator.
C3xxxyyy.INI
C3xxxyyy.SAD C3xxxyyy.SDCC3xxxyyy.SSA
Device information definition file
Segment option
HEX data file
Segment assignment
data file
Segment option
document file
Execute the segment option generator
in the S5U1C63000Axx development system
2.1.2 winsog execution flowFigure C.
* Although the segment option generator winsog generates a segment assignment data file (C3xxxyyy.SAD) and
a segment option document file (C3xxxyyy.SDC) as well as a segment option HEX file (C3xxxyyy.SSA), these
files are not written to the S1C6F016.
System Connection for Serial ProgrammingC.2.2
Below shows connection diagrams between the PC and the USB-Serial On Board Writer (S5U1C88000W4) with a
target, and between the PC and the On Board Writer (S5U1C88000W3) with a target.
When the USB-Serial On Board Writer (S5U1C88000W4) is used
S5U1C88000W4
(USB-Serial On Board Writer)
USB VDD
VSS
+
-
USB interface cable SIO cable
3.3 V power supply
Target
2.2.1 Flash EEPROM programming system connection diagram (USB interface type)Figure C.
APPENDIX C FLASH EEPROM PROGRAMMING
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation AP-C-3
(Rev. 1.1)
When the On Board Writer (S5U1C88000W3) is used
S5U1C88000W3
(On Board Writer)
COMx VDD
VSS
+
-
RS-232C interface cable SIO cable
3.3 V power supply
Target
2.2.2 Flash EEPROM programming system connection diagram (RS-232C interface type)Figure C.
The system should be connected according to the following procedure.
(1) Make sure the power for the personal computer is switched off.
(2) As shown in the above figures, connect between the USB-Serial On Board Writer (S5U1C88000W4) or On Board
Writer (S5U1C88000W3) and the PC using the interface cable included with the package.
Notes: • Turn the personal computer off before connecting and disconnecting the On Board Writer
(S5U1C88000W3). The USB-Serial On Board Writer (S5U1C88000W4) can be connected after
the PC is turned on.
• Secure the RS-232C cable with the connector screws to prevent malfunction.
Serial Programming ProcedureC.2.3
(1) Connecting the system
Connect the system as shown in Section C.2.2, "System connection for serial programming."
(2) Power on
Turn the personal computer on.
(3) Checking the serial port assignment
(Required only when the On Board Writer is used)
Check the serial port assignment on the personal computer. The On Board Writer uses the COM1 port by default
setting.
(4) Installing the USB-Serial conversion driver
(Required only when the USB-Serial On Board Writer is used)
When the USB-Serial On Board Writer (S5U1C88000W4) is connected for the first time, a dialog box appears
on the PC screen to prompt the user to install the driver. Install the USB-Serial conversion driver by following
the prompts. The USB-Serial conversion driver was copied into the folders shown below when the S1C63 Fam-
ily Assembler Package 2 (S5U1C63000A2) was installed. Specify a folder according to the serial number of the
USB-Serial On Board Writer as the driver location.
2.3.1 USB-Serial conversion driver storing folderTable C.
S5U1C88000W4100 serial number
(printed on the back side) Driver storing folder
0Z04W73001–0Z04W84050 \EPSON\S1C63\writer\driver
0Z04W87001 or later \EPSONVS1C63\writer\driver1
(5) Checking the serial port assignment
(Required only when the USB-Serial On Board Writer is used)
Open the Windows [Control Panel] → [System] → [Hardware] tab → [Device Manager] to check the COM port
to which the USB-Serial port is assigned.
The USB-Serial conversion driver assigns a logical COM port to the physical USB port and transfers the COM
port input/output to the USB input/output. Thus the On Board Writer Control Software can control the USB-
Serial On Board Writer connected to the USB port through the assigned COM port.
APPENDIX C FLASH EEPROM PROGRAMMING
AP-C-4 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
(6) Preparing the On Board Writer Control Software
The On Board Writer Control Software was copied in the "\EPSON\S1C63\writer\OBPW" folder when the
S1C63 Family Assembler Package 2 (S5U1C63000A2) was installed. When using the On Board Writer Control
Software in another folder, the following two files should be copied from the OBPW folder.
• OBPW63.EXE
• RW6F016.INI
(7) Connecting the target board to the USB-Serial On Board Writer or On Board Writer
As Figure C.2.2.1 or C.2.2.2 shows, connect the target board to the USB-Serial On Board Writer (S5U1C88000W4)
or On Board Writer (S5U1C88000W3) using the supplied SIO cable.
(8) Connecting the power supply for Flash EEPROM programming
Connect the power supply for Flash EEPROM programming (3.3 V) to the target board.
Notes: • Turn off the power of the target board except for the Flash EEPROM programming power sup-
ply.
• Since Flash EEPROM programming uses a 3.3 V power source, be careful of the voltage ratings
of the parts on the target board.
(9) Turning the Flash EEPROM programming power on
Turn the Flash EEPROM programming power on. This also supplies the power to the USB-Serial On Board
Writer (S5U1C88000W4) or On Board Writer (S5U1C88000W3) through the SIO cable.
(10) Starting up the On Board Writer Control Software
Double-click the OBPW63.exe icon.
The [Initial File] dialog box shown below appears when the On Board Writer Control Software starts
up.
Select the initial file with the same name as the microcomputer model.
RWxxxxx.ini xxxxx: microcomputer model name (e.g. 6F016 for the S1C6F016)
After an initial file is selected, the window shown below appears.
APPENDIX C FLASH EEPROM PROGRAMMING
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation AP-C-5
(Rev. 1.1)
(11) Selecting a serial port
Click the [Setting] button (or choose [Setting] from the [Option] menu) to display the [Settings] dialog box.
[Setting] button
Click the [Com] tab to open the page shown below. When USB-Serial On Board Writer (USB interface type) is
used, select the COM port that was determined in Step (5). When the On Board Writer (RS-232C interface type)
is used, select the COM port to which the RS-232C cable has been connected.
(12) Loading user data to the personal computer
Program files
Click the [Load_IP] button (or choose [Load IPROM] from the [Command] menu) to display the [Select file]
dialog box.
[Load_IP] button
Choose the HSA file to be written to the Flash EEPROM using
the [Browse] button and then click [OK]. The corresponding
LSA file is chosen at the same time.
[Browse] button
When data is loaded normally, "Complete" is displayed in the
output window.
Note: Make sure that the HSA and LSA files to be loaded are located in the same folder.
APPENDIX C FLASH EEPROM PROGRAMMING
AP-C-6 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
Data file for data ROM
Click the [Load_CP] button (or choose [Load CPROM] from the [Command] menu) to display the [Select file]
dialog box.
[Load_CP] button
Choose the CSA file to be written to the Flash EEPROM using
the [Browse] button and then click [OK].
When data is loaded normally, "Complete" is displayed in the
output window.
Segment option HEX file
Click the [Load_Seg] button (or choose [Load Segment] from the [Command] menu) to display the [Select file]
dialog box.
[Load_Seg] button
Choose the SSA file using the [Browse] button and then click
[OK].
When data is loaded normally, "Complete" is displayed in the
output window.
(13) Erasing Flash EEPROM data
Click the [Erase_IP] button (or choose [Erase IPROM] from the [Command] menu) to display an information
dialog box. Clicking the [OK] button starts erasing the program, data and segment option.
[Erase_IP] button
When the Flash EEPROM is erased normally, "Complete" is displayed in the output window.
Notes: • Inspection data is written to the Flash EEPROM at shipment, so erase it once to initialize the
contents.
• The Flash EEPROM is protected against a read out when user data is written at Seiko Epson’s
factory. The protection is released after the contents have been erased by executing "Erase_
IP."
(14) Blank check after erasing
Click the [Blank_IP] button (or choose [Blank Check IPROM] from the [Command] menu) to display an informa-
tion dialog box. Clicking the [OK] button starts process that checks if the program, data and segment option are
completely erased.
[Blank_IP] button
When the blank check is finished normally, "Complete" is displayed in the output window.
(15) Writing user data
Click the [Program_IP] button (or choose [Program IPROM] from the [Command] menu) to display an informa-
tion dialog box. Clicking the [OK] button starts writing the loaded data to the program, data and segment option.
[Program_IP] button
When writing is finished normally, "Complete" is displayed in the output window.
Note: Do not send the writer control window behind any other applications as it may cause a communica-
tion error.
APPENDIX C FLASH EEPROM PROGRAMMING
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation AP-C-7
(Rev. 1.1)
(16) Verifying user data after writing
Click the [Verify_IP] button (or choose [Verify IPROM] from the [Command] menu) to display an information
dialog box. Clicking the [OK] button starts verification of the program, data and segment option.
[Verify_IP] button
When verification is finished without any error, "Complete" is displayed in the output window.
(17) Turning the Flash EEPROM programming power off
Turn the Flash EEPROM programming power off.
(18) Disconnecting the target board
Disconnect the target board after checking that writing has finished normally.
Note: Make sure that the Flash EEPROM programming power is off before disconnecting and connecting
the target board.
(19) Terminating the On Board Writer Control Software
Choose [Exit] from the [File] menu of the On Board Writer control window or click the close box to terminate
the On Board Writer Control Software.
To continue writing, repeat from step (7) to step (19).
(20) Power off
Turn the personal computer off.
Connection Diagram for Serial ProgrammingC.2.4
The figures and tables below show the connection diagram on the target board and the signal specifications.
USB interface type: when the USB-Serial On Board Writer (S5U1C88000W4) is used
To
On Board
Writer
VDDF
VDD
CLK
VSS
RXD
TXD
RESET
SPRG
VSS
SPRG
VDD
DCLK
DRXD
DTXD
RESET
DMOD
TEST
VSS
OSC1
OSC2
OSC3
OSC4
VD1
S1C6F016
1
10 Data bus
Address bus
10-pin target board connector
+CP
–
Clock
control circuit
Serial I/F
for debugging
Debug
control circuit
Flash EEPROM
16K + 4K
bytes
Flash
control circuit
Target board
CG3
CG1
X'tal
Ceramic
CD3
C1
3.3 V
RCR
2.4.1 Connection diagram for on-board programming (USB interface type)Figure C.
APPENDIX C FLASH EEPROM PROGRAMMING
AP-C-8 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
2.4.1 Signal specifications (USB interface type)Table C.
Connector
pin No.
Signal
name Description S1C6F016 pin
to be connected
1 VDDF Programming power supply pin VDD pin
2 VDD Power supply pin VDD pin
3 CLK System clock output DCLK pin
4 VSS Ground pin VSS pin
5 RXD Serial I/F data input pin DTXD pin
6 TXD Serial I/F data output pin DRXD pin
7 RESET Initial reset output pin RESET pin
8 SPRG Programming mode setup output pin
(for negative polarity I/O models)
N.C.
9 VSS Ground pin VSS pin
10 SPRG Programming mode setup output pin
(for positive polarity I/O models)
DMOD pin
2.4.2 Connectors for connecting USB-Serial On Board WriterTable C.
Name Product code
Box header (male) [target side] 3662-6002LCPL (3M) or equivalent
Socket connector (female) [SIO cable side] Socket connector 7910-B500FL (3M)
Strain relief 3448-7910 (3M)
or equivalent
RS-232C interface type: when the On Board Writer (S5U1C88000W3) is used
To
On Board
Writer
VDDF
VDD
CLK
VSS
Reserved
VSS
RXD
VSS
TXD
VSS
RESET
VSS
SPRG
VSS
SPRG
Reserved
VDD
DCLK
DRXD
DTXD
RESET
DMOD
TEST
VSS
OSC1
OSC2
OSC3
OSC4
VD1
S1C6F016
1
16
Target board
Data bus
Address bus
16-pin target board connector
+CPCRES
–
Clock
control circuit
Serial I/F
for debugging
Debug
control circuit
Flash EEPROM
16K + 4K
bytes
Flash
control circuit
CG3
CG1
X'tal
Ceramic
RCR
CD3
C1
3.3 V
2.4.2 Connection diagram for on-board programming (RS-232C interface type)Figure C.
APPENDIX C FLASH EEPROM PROGRAMMING
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation AP-C-9
(Rev. 1.1)
2.4.3 Signal specifications (RS-232C interface type)Table C.
Connector
pin No.
Signal
name Description S1C6F016 pin
to be connected
1 VDDF Programming power supply pin VDD pin
2 VDD Power supply pin VDD pin
3 CLK System clock output pin DCLK pin
5 Reserved Reserved N.C.
7 RXD Serial I/F data input pin DTXD pin
9 TXD Serial I/F data output pin DRXD pin
11 RESET Initial reset output pin RESET pin
13 SPRG Programming mode setup output pin
(for negative polarity I/O models)
N.C.
15 SPRG Programming mode setup output pin
(for positive polarity I/O models)
DMOD pin
16 Reserved Reserved N.C.
4, 6, 8, 10,
12, 14
VSS Ground pin VSS pin
2.4.4 Connectors for connecting On Board WriterTable C.
Name Product code
Box header (male) [target side] 3408-6002LCFL (3M) or equivalent
Socket connector (female) [SIO cable side] Socket connector 7916-B500FL (3M)
Strain relief 3448-7916 (3M)
or equivalent
Notes: • Prepare a 3.3 V power supply for Flash EEPROM programming, since the power (3.3 V) of the
On Board Writer must be supplied from the target board.
• Since Flash EEPROM programming uses a 3.3 V power source, be careful of the voltage ratings
of the parts on the target board.
On Board Writer Control SoftwareC.3
Starting UpC.3.1
Double-click the OBPW63.exe icon to start up the On Board Writer system.
The dialog box shown below appears when the On Board Writer Control Software starts up.
Select the initial file with the same name as the microcomputer model.
RWxxxxx.ini xxxxx: microcomputer model name (e.g. 6F016 for the S1C6F016)
After an initial file is selected, the window shown below appears.
APPENDIX C FLASH EEPROM PROGRAMMING
AP-C-10 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
SetupC.3.2
Click the [Setting] button (or choose [Setting] from the [Option] menu) to display the [Settings] dialog box.
[Setting] button
Selecting a serial port ([Com] tab)
Select the same COM channel as the serial port configuration on the personal computer.
Specifying the log file ([Folder] tab)
When saving the execution results to a log file, enter (or choose) the log file name and place a check in the [Create
Log] check box.
To disable logging, remove the check from the check box.
Command window
Accepts the commands
input from the keyboard.
Output window
Displays the execution
results.
APPENDIX C FLASH EEPROM PROGRAMMING
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation AP-C-11
(Rev. 1.1)
Specifying the editor path ([Editor] tab)
Specify the path to the editor used to open a log file from the On Board Writer Control Software.
"notepad.exe" is used as the default editor unless specified.
APPENDIX C FLASH EEPROM PROGRAMMING
AP-C-12 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
Command DetailsC.3.3
All the On Board Writer commands such as Flash EEPROM writing can be executed using the buttons on the win-
dow.
This section explains the commands individually in the following manner.
No. Command name
Function: Shows the command function.
Usage: Button
Menu [Command] menu - [Program IPROM]
Keyboard >FWI↵
Shows the button, menu command and typing command line to execute the command.
Description: Describes the operation and display contents after executing the command.
If "A progress window appears to show progress of the process." is described here, a progress window
is displayed while the command is executing and the [Cancel] button on the window allows termina-
tion of the command being executed.
Note: Describes precautions.
1. LOAD PROGRAM (HSA file, LSA file)
Function: Loads program files (xxxxxx.HSA and xxxxxx.LSA) to the memory on the personal computer.
Usage: Button
Menu [Command] menu - [Load IPROM]
Keyboard >LI drive:\folder\file name↵ (drive:\folder\file name: HSA file name)
Description: (1) The [Select file] dialog box appears.
[Browse] button
(2) Clicking the [Browse] button displays the Windows standard file select dialog box. Choose the file
to be loaded from the dialog box. Then click the [OK] button.
The LSA file will be loaded simultaneously by only choosing the HSA file.
(3) When data is loaded normally, "Complete" is displayed in the output window.
Notes: • This command can load files in Motorola S2 format only.
• Make sure that the HSA and LSA files to be loaded are located in the same folder.
APPENDIX C FLASH EEPROM PROGRAMMING
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation AP-C-13
(Rev. 1.1)
2. LOAD DATA (CSA file)
Function: Loads a data file for the data ROM (xxxxxx.CSA) to the memory on the personal computer.
Usage: Button
Menu [Command] menu - [Load CPROM]
Keyboard >LC drive:\folder\file name↵ (drive:\folder\file name: CSA file name)
Description: (1) The [Select file] dialog box appears.
[Browse] button
(2) Clicking the [Browse] button displays the Windows standard file select dialog box. Choose the file
to be loaded from the dialog box. Then click the [OK] button.
(3) When data is loaded normally, "Complete" is displayed in the output window.
Note: This command can load files in Motorola S2 format only.
3. LOAD SEGMENT (SSA file)
Function: Loads a segment option HEX file (xxxxxx.SSA) to the memory on the personal computer.
Usage: Button
Menu [Command] menu - [Load Segment]
Keyboard >LS drive:\folder\file name↵ (drive:\folder\file name: SSA file name)
Description: (1) The [Select file] dialog box appears.
[Browse] button
(2) Clicking the [Browse] button displays the Windows standard file select dialog box. Choose the file
to be loaded from the dialog box. Then click the [OK] button.
(3) When data is loaded normally, "Complete" is displayed in the output window.
Note: This command can load files in Motorola S2 format only.
APPENDIX C FLASH EEPROM PROGRAMMING
AP-C-14 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
4. ERASE PROGRAM, DATA, SEGMENT
Function: Erases program, data and segment option HEX data.
Usage: Button
Menu [Command] menu - [Erase IPROM]
Keyboard >FERSI↵
Description: (1) An information dialog box appears.
(2) Clicking the [OK] button starts erasing the IPROM, CPROM and segment option HEX data.
(3) A progress window appears to show progress of the process while the command is executing.
Clicking the [Cancel] button terminates the process.
(4) Read protection is removed after the Flash EEPROM contents has been erased.
(5) When the Flash EEPROM is erased normally, "Complete" is displayed in the output window.
Note: When the process is terminated, the Flash EEPROM must be erased before data can be written.
5. BLANK CHECK PROGRAM, DATA, SEGMENT
Function: Checks whether the program, data and segment option HEX data are completely erased or not.
Usage: Button
Menu [Command] menu - [Blank Check IPROM]
Keyboard >FEI↵
Description: (1) Starts a blank check.
(2) A progress window appears to show progress of the process.
Clicking the [Cancel] button terminates the process.
(3) When the check is finished without finding any address that is not erased in program, data and
segment option HEX data, "Complete" is displayed in the output window.
(4) If error addresses that have not been erased are found, the address and data are displayed.
Example: Address READ
0100 0000
0101 0000
0102 0000
0103 0000
: :
Note: When an erase error is detected, the Flash EEPROM must be erased before data can be written.
APPENDIX C FLASH EEPROM PROGRAMMING
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation AP-C-15
(Rev. 1.1)
6. PROGRAM PROGRAM, DATA, SEGMENT
Function: Writes the data loaded by the [Load IPROM], [Load CPROM] and [Load Segment] commands to the
Flash EEPROM.
Usage: Button
Menu [Command] menu - [Program IPROM]
Keyboard >FWI↵
>FWI /P↵
(The protect processing will be performed after data has been written.)
Description: (1) An information dialog box appears.
(2) Select the [Yes] radio button if data protection is required.
(3) Clicking the [OK] button starts write process.
(4) A progress window appears to show progress of the process.
Clicking the [Cancel] button terminates the process.
(5) When protection has been specified, the protect processing is performed.
(6) When writing is finished normally, "Complete" is displayed in the output window.
Note: Do not send the writer control window behind any other applications as it may cause a communica-
tion error.
7. VERIFY PROGRAM, DATA, SEGMENT
Function: Compares the data loaded by the [Load IPROM], [Load CPROM] and [Load Segment] commands and
the data read from the Flash EEPROM.
Usage: Button
Menu [Command] menu - [Verify IPROM]
Keyboard >FVI↵
Description: (1) Starts verification process.
(2) A progress window appears to show progress of the process.
Clicking the [Cancel] button terminates the process.
(3) When both data are the same, "Complete" is displayed in the output window.
(4) When a verify error is detected, the error address and data are displayed.
APPENDIX C FLASH EEPROM PROGRAMMING
AP-C-16 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
8. READ PROGRAM, DATA, SEGMENT
Function: Reads the program, data and segment option HEX data in the Flash EEPROM to the memory on the
personal computer.
Usage: Button
Menu [Command] menu - [Read IPROM]
Keyboard >FRI↵
Description: (1) An information dialog box appears.
(2) Clicking the [OK] button starts read process.
(3) A progress window appears to show progress of the process.
Clicking the [Cancel] button terminates the process.
(4) When data is read normally, "Complete" is displayed in the output window.
Note: The memory data on the personal computer is overwritten with the read data.
9. MACRO
Function: Successively executes the commands described in a macro file.
Usage: Button
Menu [Command] menu - [Macro]
Keyboard None
Description: (1) A file-select dialog box appears.
(2) Select a macro file and then click the [OK] button. The macro file will be loaded and the described
commands will be executed.
Macro file: Use a text editor to create macro files. ".cmd" is recommended for the file extension. Write the com-
mands in order of execution and save as a text file. The command should be written one line by one
line in the command line format listed at Usage: Keyboard. Any words following a ";" are regarded
as a comment.
Example: Macro file <test.cmd>
;-- PROGRAM --
LI D:\WORK\C6F016.hsa
FERSI
FEI
FWI
FVI
Comment
Load file
Erase data
Blank check
Program
Verify check
APPENDIX C FLASH EEPROM PROGRAMMING
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation AP-C-17
(Rev. 1.1)
10. DUMP MEMORY
Function: Displays the contents of the PC memory in hexadecimal numbers. The memory contents can be edited
in the [Dump] window.
Usage: Button
[Dump IPROM] button
Menu [Command] menu - [Dump IPROM]
Keyboard >DI address↵ (address: Display start address; optional)
Description: (1) The [Dump] window appears.
Displays the last page.
Displays the next page.
Display start address is specified.
Displays the previous page.
Displays the top page.
(2) To edit the memory contents, enter a value after placing the cursor on the address to be edited.
* When this command is entered from the keyboard, the memory contents are displayed in the output
window.
Memory dump format:
+0/+8 +1/+9 +2/+A +3/+B +4/+C +5/+D +6/+E +7/+F ASCII
00000 1417 182B 0069 1013 164D 044B 0801 1645 ...+.i...M.K...E
00008 121B 0E29 062D 1203 0613 025B 0471 140F ...).-.....[.q..
The row on the left side indicates addresses in the PC memory area.
The second to ninth rows show the 8 steps of program code that begins with the address on the
left. For example, "1417," "182B" and "1645" that appear at the second line of the above example
indicate the 13-bit program code stored in addresses 00000H, 00001H and 00007H, respectively.
"121B" appearing in the third line indicates the 13-bit code stored in address 00008H. The row on
the right side indicates the ASCII characters corresponding to the code listed in that line.
APPENDIX C FLASH EEPROM PROGRAMMING
AP-C-18 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
11. OPEN LOG FILE
Function: Opens a log file.
Usage: Button
[Open Log file] button
Menu [File] menu - [Open Log File]
Keyboard None
Description: The specified editor starts up and opens the specified log file.
The editor and the log file must be specified beforehand in the [Editor] tab screen of the [Settings]
dialog box and the [Folder] tab screen, respectively.
12. SAVE PROGRAM
Function: Saves the program stored in the PC memory to a file.
Usage: Button
[Save IPROM] button
Menu [File] menu - [Save IPROM]
Keyboard >SI drive:\folder\file name↵ (drive:\folder\file name: HSA file name)
Description: (1) The Windows standard file select dialog box appears. Choose or enter the file name for saving
data.
(2) The contents in the PC memory are saved to Motorola S2 format files (*.HSA and *.LSA).
13. SAVE DATA
Function: Saves the data stored in the PC memory to a file.
Usage: Button
[Save CPROM] button
Menu [File] menu - [Save CPROM]
Keyboard >SC drive:\folder\file name↵ (drive:\folder\file name: CSA file name)
Description: (1) The Windows standard file select dialog box appears. Choose or enter the file name for saving
data.
(2) The contents in the PC memory are saved to a Motorola S2 format file (*.CSA).
APPENDIX C FLASH EEPROM PROGRAMMING
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation AP-C-19
(Rev. 1.1)
List of CommandsC.3.4
3.4.1 List of commandsTable C.
No. Command line Menu Button Function
1LI drive\folder\file name↵[Command]-[Load IPROM] Load HSA and LSA files
2LC drive\folder\file name↵[Command]-[Load CPROM] Load CSA file
3LS drive\folder\file name↵[Command]-[Load Segment] Load SSA file
4FERSI↵[Command]-[Erase IPROM] Erase program/data for data ROM/
segment data and remove read protection
5FEI↵[Command]-[Blank Check IPROM] Program/data for data ROM/segment
data blank check
6FWI↵
FWI /P↵[Command]-[Program IPROM]
Write program/data for data ROM/
segment data (/P specifies protect
processing.)
7FVI↵[Command]-[Verify IPROM] Verify program/data for data ROM/
segment data
8FRI↵[Command]-[Read IPROM] Read program/data for data ROM/
segment data
9 – [Command]-[Macro] Read/execute macro file
10 DI address↵[Command]-[Dump IPROM] Dump memory data
11 – [File]-[Open Log File] Open log file
12 SI drive\folder\file name↵[File]-[Save IPROM] Save program
13 SC drive\folder\file name↵[File]-[Save CPROM] Save data for data ROM
14 LOG↵–Start logging
15 LOG /E↵–End logging
List of Error MessagesC.3.5
3.5.1 List of error messagesTable C.
Error message Description Display location
Command timeout Communication time out Output window
Receive NAK Communication error Output window
Send error Communication error Output window
COM Port Open Error Port open error Output window
Invalid File Format The file is not a Motorola S2 format file. Output window
Data Size Over flow The data size in the file exceeds the Flash EEPROM
size.
Output window
Verify Error Verify error Output window
Erase Error The erase process has failed. Output window
Protected Error The Flash EEPROM has read-protected. Output window
Abort by operator The process is terminated. Output window
Complete The process is terminated normally. Output window
Illegal inifile data The INI file contains illegal description. Output window/dialog box
Can not find ** ** cannot be found. Dialog box
APPENDIX C FLASH EEPROM PROGRAMMING
AP-C-20 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
Flash EEPROM Programming NotesC.4
(1) The Flash EEPROM programming requires a 3.3 V power source voltage.
(2) Since Flash EEPROM programming uses a 3.3 V power source, be careful of the voltage ratings of the parts on
the target board.
(3) After connecting the Flash EEPROM Writer to the serial port of the personal computer, secure the RS-232C cable
with the connector screws.
(4)
Make sure the personal computer is off before connecting or disconnecting the On Board Writer
(S5U1C88000W3) to/from the personal computer. The USB-Serial On Board Writer (S5U1C88000W4) can be
connected after the PC is turned on.
(5) Make sure the target is off before connecting or disconnecting the On Board Writer to/from the target
(S1C6F016).
APPENDIX D POWER SAVING
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation AP-D-1
(Rev. 1.1)
Appendix D Power Saving
Current consumption will vary dramatically, depending on CPU operating mode, operation clock frequency, and the
peripheral circuits being operated. Listed below are the control methods for saving power.
Power Saving by Clock ControlD.1
Figure D.1.1 illustrates the S1C6F016 clock system.
OSC3
oscillation circuit
OSC1
oscillation circuit
(32.768 kHz)
S1C63000 CPU
Internal logic
System clock
fOSC1•1/128
fOSC1•1/1–1/256
fOSC3•1/1–1/256
SLEEP On/Off
HALT
Gate
FOUT
Clock timer
fOSC1•1/128 Watchdog timer
Gate
fOSC1 or fOSC3 Integer multiplierGate
fOSC1•1/128 Stopwatch timerGate
fOSC1, fOSC1•1/128 Sound generatorGate
fOSC1•1/16 LCD system voltage
regulator (booster)
Gate
Gate
fOSC1•1/16–1/256 P0 key input interrupt
noise rejector
Gate
fOSC1•1/16–1/256 P1 key input interrupt
noise rejector
Gate
fOSC1•1/1–1/256
fOSC3•1/1–1/256 Programmable
timer 0
Gate
fOSC1•1/1–1/256
fOSC3•1/1–1/256 Programmable
timer 1
Gate
fOSC1•1/1–1/256
fOSC3•1/1–1/256 Programmable
timer 2
Gate
fOSC1•1/1–1/256
fOSC3•1/1–1/256 Programmable
timer 3
Gate
fOSC1•1/1–1/4
fOSC3•1/1–1/4 Serial interfaceGate
fOSC1•1/1–1/4
fOSC3•1/1–1/4 R/F converterGate
Oscillation circuit
Clock manager
fOSC1
divider
fOSC3
divider
fOSC3
fOSC1
1.1 Clock systemFigure D.
APPENDIX D POWER SAVING
AP-D-2 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
This section describes clock systems that can be controlled via software and power-saving control details. For more
information on control registers and control methods, refer to the respective peripheral circuit sections.
System SLEEP (All clocks stopped)
• Execute the SLP instruction (CPU)
Execute the SLP instruction when the entire system can be stopped. The CPU enters SLEEP mode and the
OSC1 and OSC3 oscillation circuits stop. This also stops all peripheral circuits using clocks. Starting up the
CPU from SLEEP mode is therefore limited to startup using a port (described later).
System clock
• Clock source selection (oscillation circuit)
Select between OSC3 and OSC1 for the system clock source. Reduce current consumption by selecting the
OSC1 clock when low-speed processing is possible.
Control register: CLKCHG
Default setting: CLKCHG = "0" (operated with the OSC1 clock)
• OSC3 oscillator circuit stop (oscillation circuit)
Operate the oscillation circuit comprising the system clock source. Where possible, stop the other oscillation
circuit. You can reduce current consumption by using OSC1 as the system clock and stopping the OSC3 oscil-
lation circuit.
Control register: OSCC
Default setting: OSCC = "0" (OSC3 oscillation off)
CPU clock
• Execute the HALT instruction (CPU)
Execute the HALT instruction when program execution by the CPU is not required—for example, when only
the display is required or for interrupt standby. The CPU enters HALT mode and suspends operations, but the
peripheral circuits maintain the status in place at the time of the HALT instruction, enabling use of peripheral
circuits for timers and interrupts. You can reduce power consumption even further by suspending unnecessary
oscillation circuit and peripheral circuits before executing the HALT instruction. The CPU is started from
HALT mode by an interrupt from a port or the peripheral circuit operating in HALT mode.
Peripheral circuit clocks
• Stop clock supply to the peripheral circuits (clock manager)
The S1C6F016 incorporates a clock manager to control the clock supply to the peripheral circuits. Stop the
clock supply to the unused peripheral circuits to reduce current consumption.
The table below lists the peripheral circuits of which the operating clock can be stopped.
1.1 Peripheral circuits with clock controlTable D.
Peripheral circuit/function Stop control Frequency selection Clock control register
FOUT output Possible Possible FOUT[3:0]
Key input interrupt noise rejector (P00 to P03) Possible Possible NRSP0[1:0]
Key input interrupt noise rejector (P10 to P13) Possible Possible NRSP1[1:0]
LCD system voltage regulator (booster clock) Possible – VCCKS[1:0]
Serial interface Possible Possible SIFCKS[2:0]
R/F converter Possible Possible RFCKS[2:0]
Programmable timer 0 Possible Possible PTPS0[3:0]
Programmable timer 1 Possible Possible PTPS1[3:0]
Programmable timer 2 Possible Possible PTPS2[3:0]
Programmable timer 3 Possible Possible PTPS3[3:0]
Clock timer Possible – RTCKE
Stopwatch timer Possible – SWCKE
Sound generator Possible – SGCKE
Integer multiplier Possible – MDCKE
• Use low-speed clocks (clock manager)
Reduce current consumption by setting the clock for the peripheral circuit that supports clock frequency selec-
tion as low as possible.
APPENDIX D POWER SAVING
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation AP-D-3
(Rev. 1.1)
Table D.1.2 shows a list of methods for clock control and starting/stopping the CPU.
1.2 Clock control listTable D.
Current
consumption OSC1 OSC3 CPU clock Peripheral
(OSC3)
Peripheral
(OSC1)
CPU stop
method
CPU startup
method
↑
Low Stop Stop Stop Stop Stop Execute SLP
instruction 1
Oscillation
(system CLK) Stop Stop Stop Run Execute HALT
instruction 1, 2
Oscillation
(system CLK) Stop Stop Run Run Execute HALT
instruction 1, 2, 3
Oscillation
(system CLK) Stop Run Run Run
Oscillation Oscillation
(system CLK) Stop Run Run Execute HALT
instruction 1, 2, 3
High
↓Oscillation Oscillation
(system CLK) Run Run Run
HALT and SLEEP mode cancelation methods (CPU startup method)
1. Startup by a port
Started up by a key input interrupt.
2. Startup by a peripheral circuit being operated with the OSC1 clock
Started up by an interrupt from the clock timer, stopwatch timer, watchdog timer or a peripheral circuit being
operated with an OSC1 dividing clock.
3. Startup by a peripheral circuit
Started up by a peripheral circuit interrupt.
Power Saving by Power Supply ControlD.2
The available power supply controls are listed below.
Internal operating voltage regulator
• Note that turning on internal operating voltage regulator heavy load protection will increase current consump-
tion. Turn off heavy load protection for normal operations. Turn on only if operations are unstable.
LCD system voltage regulator
• Turning on the LCD system voltage regulator heavy load protection will increase current consumption. Turn
off heavy load protection for normal operations. Turn on only if the display is unstable.
• If no LCD display is being used, turn off the LCD system voltage regulator.
Supply voltage detection (SVD) circuit
• Operating the SVD circuit will increase current consumption. Turn off power supply voltage detection unless
it is required.
APPENDIX E S1C6F016 MASK DATA GENERATION PROCEDURE
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation AP-E-1
(Rev. 1.1)
Appendix E S1C6F016 Mask Data
Generation Procedure
This chapter shows a procedure to generate an S1C6F016 mask data file (PAx) for submission to Seiko Epson.
Before the mask data file can be generated, get the latest device information definition file package from our web-
site.
There are four different device information definition files available according to the mask option types.
1 Correspondence between mask option type and device information definition fileTable E.
Mask option type Device information definition file
Custom mask option 6F016forCustom
Standard mask option Type B 6F016forTYPEB
Standard mask option Type E 6F016forTYPEE
Standard mask option Type G 6F016forTYPEG
Use the appropriate device information definition file according to the mask option type to be used.
Mask Data Generation FlowchartE.1
(1) When custom mask option is selected
Generate function option
file (FDC)
Generate mask data file
(PAx)
Generate segment option
file (SDC)
ROM programming Not performed by Seiko Epson
See Section E.2.
See Section E.3.
See Section E.4.
Performed by Seiko Epson
Generate ROM HEX data Select
S1C6F016.HSA
S1C6F016.LSA
S1C6F016.CSA
included in the package
1.1 Mask data generation procedure when custom mask option is selectedFigure E.
(2) When standard mask option (Type B, Type E, or Type G) is selected
Select 6F016forTYPEx.FDC
included in the package
Generate mask data file
(PAx)
Generate segment option
file(SDC)
ROM programming Not performed by Seiko Epson
See Section E.3.
See Section E.4.
Performed by Seiko Epson
Generate ROM HEX data Select
S1C6F016.HSA
S1C6F016.LSA
S1C6F016.CSA
included in the package
1.2 Mask data generation procedure when standard mask option (Type B, Type E, or Type G) is selectedFigure E.
APPENDIX E S1C6F016 MASK DATA GENERATION PROCEDURE
AP-E-2 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
Function Option File Generation ProcedureE.2
The following shows a function option file generation procedure.
These operations are required only when custom mask option is selected.
1. Launch the function option generator (winfog.exe).
2. Load the device information definition file (INI).
Select "Device INI select" from the "Tool (T)" menu or click the "Device INI select" button.
When the dialog box appears, select the folder and file shown below.
• Folder: 6F016forCustom*1
• File: S1c6f016C.INI*1
3. Set up information such as an output folder/file name.
Select "Setup (S)" from the "Tool (T)" menu or click the "Setup" button.
Enter the information required through the dialog box appeared.
4. Select options to be used.
5. Generate function option files (FDC, FSA).
Select "Generate (G)" from the "Tool (T)" menu or click the "Generate" button.
The function option files will be generated.
Segment Option File Generation ProcedureE.3
The following shows a segment option file generation procedure.
1. Launch the segment option generator (winsog.exe).
2. Load the device information definition file (INI).
Select "Device INI select" from the "Tool (T)" menu or click the "Device INI select" button.
When the dialog box appears, select the folder and file for the mask option type used.
• Folder: 6F016forxxx*1
• File: S1c6f016xx.INI*1
3. Set up information such as an output folder/file name.
Select "Setup (S)" from the "Tool (T)" menu or click the "Setup" button.
Enter the information required through the dialog box appeared.
4. Load a segment assignment data file (SAD).
Select "Record (R) → Load (L)" from the "Tool (T)" menu or click the "Load" button.
When the dialog box appears, select the folder and file for the mask option type used.
• Folder: 6F016forxxx*1
• File: S1c6f016xx.SAD*1
The assignable area is displayed as shown in Figure E.3.1. The cells filled in with red indicate fixed area/output
specifications that cannot be modified.
APPENDIX E S1C6F016 MASK DATA GENERATION PROCEDURE
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation AP-E-3
(Rev. 1.1)
3.1 Assignable areaFigure E.
5. Segment assignment
Assign an address/data bit to each cell within the assignable area.
6. Generate segment option files (SDC, SSA).
Select "Generate (G)" from the "Tool (T)" menu or click the "Generate" button.
The segment option files will be generated.
Mask Data File Generation ProcedureE.4
The following shows a mask data file generation procedure.
1. Launch the mask data checker (winmdc.exe).
2. Load the device information definition file (INI).
Select "Device INI select" from the "Tool (T)" menu or click the "Device INI select" button.
When the dialog box appears, select the folder and file for the mask option type used.
• Folder: 6F016forxxx*1
• File: S1c6f016xx.INI*1
3. Select ROM data files and option document files.
Select "Pack (P)" from the "Tool (T)" menu or click the "Pack" button on the toolbar.
When the dialog box appears, select the code ROM HEX files (HSA, LSA), data ROM HEX file (CSA), function
option document file (FDC), and segment option document file (SDC) to be packed.
• Folder: 6F016forxxx*1 or a folder created by the user
• File: xxxxxxxx.HSA*2 generated by the user
xxxxxxxx.LSA*2 generated by the user
xxxxxxxx.CSA*2 generated by the user
xxxxxxxx.FDC generated by the user or 6F016forTYPEx.FDC*3
xxxxxxxx.SDC generated by the user
4. Generate a mask data file (PAx).
Click the "Pack" button in the dialog box that appears in Step 3.
The mask data file will be generated.
Assignable
area
APPENDIX E S1C6F016 MASK DATA GENERATION PROCEDURE
AP-E-4 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
For details of the function option generator, segment option generator, and mask data checker, refer to the
"S5U1C63000A Manual."
*1 Included in the device information definition file package.
*2 When programming the ROM by Seiko Epson, use the last ROM HEX data generated by the user. If Seiko
Epson does not program the ROM, use S1C6F016.HAS, S1C6F016.LSA, and S1C6F016.CSA included in the
device information definition file package.
*3 Use the function option document file (FDC) generated by the user when custom mask option is selected. Use
the function option document file (6F016forTYPEx.FDC) included in the device information definition file
package when standard mask option (Type B, Type E, or Type G) is selected.
APPENDIX F SUMMARY OF NOTES
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation AP-F-1
(Rev. 1.1)
Appendix F Summary of Notes
Summary of Notes by FunctionF.1
Here, the cautionary notes are summed up by function category. Keep these notes well in mind when programming.
Memory and stack
• Memory is not implemented in unused areas within the memory map. Further, some non-implementation areas
and unused (access prohibition) areas exist in the peripheral I/O area. If the program that accesses these areas
is generated, its operation cannot be guaranteed.
• Part of the RAM area is used as a stack area for subroutine call and register evacuation, so pay attention not to
overlap the data area and stack area.
• The S1C63000 core CPU handles the stack using the stack pointer for 4-bit data (SP2) and the stack pointer
for 16-bit data (SP1). 16-bit data are accessed in stack handling by SP1, therefore, this stack area should be
allocated to the area where 4-bit/16-bit access is possible (0100H to 01FFH). The stack pointers SP1 and SP2
change cyclically within their respective range: the range of SP1 is 0000H to 1FFFH and the range of SP2 is
0000H to 00FFH. Therefore, pay attention to the SP1 value because it may be set to 0200H or more exceeding
the 4-bit/16-bit accessible range in the S1C6F016 or it may be set to 00FFH or less. Memory accesses except
for stack operations by SP1 are 4-bit data access. After initial reset, all the interrupts including NMI are masked
until both the stack pointers SP1 and SP2 are set by software. Further, if either SP1 or SP2 is re-set when both
are set already, the interrupts including NMI are masked again until the other is re-set. Therefore, the settings
of SP1 and SP2 must be done as a pair.
Power control
• Do not use the VD1 and VC1 to VC3 terminal output voltages to drive external circuits.
• The LCD system voltage regulator takes about 100 msec for stabilizing the LCD drive voltages after writing
"1" to LPWR.
• Current consumption increases in heavy load protection mode, therefore do not set heavy load protection mode
with software if unnecessary.
Interrupt
• The interrupt factor flags are set when the interrupt condition is established, even if the interrupt mask registers
are set to "0."
• After an interrupt occurs, the same interrupt will occur again if the interrupt enabled state (I flag = "1") is set or
the RETI instruction is executed unless the interrupt factor flag is reset. Therefore, be sure to reset (write "1"
to) the interrupt factor flag in the interrupt service routine before shifting to the interrupt enabled state.
• After an initial reset, all the interrupts including NMI are masked until both the stack pointers SP1 and SP2
are set with the software. Be sure to set the SP1 and SP2 in the initialize routine. Further, when re-setting the
stack pointer, the SP1 and SP2 must be set as a pair. When one of them is set, all the interrupts including NMI
are masked and interrupts cannot be accepted until the other one is set.
• The interrupt handler routine must be located within the range from "Interrupt vector address (100H–10FH)"
-7FH to +80H. If it is difficult, make a relay point within that range as the destination of the vector jump and
branch the program to the interrupt handler from there.
• Both the OSC1 and OSC3 oscillation circuits stop oscillating when the CPU enters SLEEP mode. To prevent
the CPU from a malfunction when it resumes operating from SLEEP mode, switch the CPU clock to OSC1
before placing the CPU into SLEEP mode.
APPENDIX F SUMMARY OF NOTES
AP-F-2 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
Oscillation circuit
• When high speed CPU operations are not necessary, you should operate the peripheral circuits with the setting
shown below.
- CPU operating clock: OSC1
- OSC3 oscillation circuit: Off (When the OSC3 clock is not necessary for peripheral circuits.)
- Clock manager: Disable the clock supply to unnecessary peripheral circuits.
• Since several tens of µsec to several tens of msec are necessary for the oscillation to stabilize after turning the
OSC3 oscillation circuit on. Consequently, you should switch the CPU operating clock (OSC1 → OSC3) after
allowing for a sufficient waiting time once the OSC3 oscillation goes on. The oscillation start time will vary
somewhat depending on the resonator and externally attached parts. Refer to the oscillation start time example
indicated in the "Electrical Characteristics" chapter.
• When switching the clock from OSC3 to OSC1, be sure to switch OSC3 oscillation off with separate instruc-
tions. Using a single instruction to process simultaneously can cause a malfunction of the CPU.
• Both the OSC1 and OSC3 oscillation circuits stop oscillating when the CPU enters SLEEP mode. To prevent
the CPU from a malfunction when it resumes operating from SLEEP mode, switch the CPU clock to OSC1
before placing the CPU into SLEEP mode.
Watchdog timer
• When the watchdog timer is being used, the software must reset it within 3-second cycles.
• Because the watchdog timer is set in operation state by initial reset, set the watchdog timer to disabled state
(not used) before generating an interrupt (NMI) if it is not used.
Clock timer
• Be sure to read timer data in the order of low-order data (TM[3:0]) then high-order data (TM[7:4]).
• The clock timer count clock does not synch with the CPU clock. Therefore, the correct value may not be ob-
tained depending on the count data read and count-up timings. To avoid this problem, the clock timer count
data should be read by one of the procedures shown below.
- Read the count data twice and verify if there is any difference between them.
- Temporarily stop the clock timer when the counter data is read to obtain proper data.
• When resetting the clock timer (TMRST = "1"), do not start the clock timer (TMRUN = "1") simultaneously.
If both control bits are set to "1", the clock timer may not reset properly.
Stopwatch timer
• The interrupt factor flag should be reset after resetting the stopwatch timer.
• Be sure to data reading in the order of SWD[3:0] → SWD[7:4] → SWD[11:8].
• When data that is held by a LAP input is read, read the capture buffer renewal flag CRNWF after reading the
SWD[11:8] and check whether the data has been renewed or not.
• When performing a processing such as a LAP input preceding with 1 Hz interrupt processing, read the LAP
data carry-up request flag LCURF before processing and check whether carry-up is needed or not.
Programmable timer
• When reading counter data, be sure to read the low-order 4 bits (PTDx[3:0]) first. The high-order 4 bits
(PTDx[7:4]) are latched when the low-order 4 bits are read and they are held until the next reading of the low-
order 4 bits. In 16-bit timer mode, the high-order 12 bits are held by reading the low-order 4 bits, be sure to
read the low-order 4 bits first. When the CPU is running with the OSC1 clock and the programmable timer is
running with the OSC3 clock, stop the timer before reading the counter data to read the proper data.
• The programmable timer actually enters RUN/STOP status in synchronization with the falling edge of the input
clock after writing to the PTRUNx register. Consequently, when "0" is written to the PTRUNx register, the
timer enters STOP status at the point where the counter is decremented (-1). The PTRUNx register maintains
"1" for reading until the timer actually stops.
APPENDIX F SUMMARY OF NOTES
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation AP-F-3
(Rev. 1.1)
PTRUNx (WR)
PTDx[7:0] 42H 41H 40H 3FH 3EH 3DH
PTRUNx (RD)
Count clock
"1" (RUN)
writing
"0" (STOP)
writing
1.1 Timing chart for RUN/STOP control (timer mode)Figure F.
In event counter mode, the timer starts counting at the first event clock.
42H 41H 40H 3FH 3EH 3DH
"1" (RUN)
writing
"0" (STOP)
writing
PTRUNx (WR)
PTDx[7:0]
PTRUNx (RD)
Count clock
1.2 Timing chart for RUN/STOP control (event counter mode)Figure F.
• Since the TOUT_A and TOUT_B signals are generated asynchronously from the PTOUT_A and PTOUT_B
registers, a hazard within 1/2 cycle is generated when the signal is turned on and off by setting the register.
• When the OSC3 oscillation clock is selected for the clock source, it is necessary to turn the OSC3 oscillation
on, prior to using the programmable timer. However the OSC3 oscillation circuit requires several tens of µsec
to several tens of msec after turning the circuit on until the oscillation stabilizes. Therefore, allow an adequate
interval from turning the OSC3 oscillation circuit on to starting the programmable timer. Refer to the "Oscil-
lation Circuit and Clock Control" chapter, for the control and notes of the OSC3 oscillation circuit.
At initial reset, the OSC3 oscillation circuit is set in off state.
• For the reason below, pay attention to the reload data write timing when changing the interval of the program-
mable timer interrupts while the programmable timer is running.
The programmable timer counts down at the falling edge of the input clock and at the same time it generates
an interrupt if the counter underflows. Then it starts loading the reload data to the counter and the counter data
is determined at the next rising edge of the input clock (period shown in as ➀ in the figure).
Count clock
Counter data
(continuous mode) (Reload data = 25H)
03H 02H 01H 00H 25H 24H
Counter data is determined by reloading.Underflow (interrupt is generated)
➀
1.3 Reload timing for programmable timerFigure F.
To avoid improper reloading, do not rewrite the reload data after an interrupt occurs until the counter data is
determined including the reloading period ➀. Be especially careful when using the OSC1 (low-speed clock) as
the clock source of the programmable timer and the CPU is operating with the OSC3 (high-speed clock).
• The programmable timer count clock does not synch with the CPU clock. Therefore, the correct value may not
be obtained depending on the count data read and count-up timings. To avoid this problem, the programmable
timer count data should be read by one of the procedures shown below.
- Read the count data twice and verify if there is any difference between them.
- Temporarily stop the programmable timer when the counter data is read to obtain proper data.
I/O port
• When an I/O ports in input mode is changed from high to low by the pull-down resistor, the fall of the waveform
is delayed on account of the time constant of the pull-down resistor and input gate capacitance. Hence, when
fetching input data, set an appropriate wait time.
Particular care needs to be taken of the key scan during key matrix configuration.
Make this waiting time the amount of time or more calculated by the following expression.
APPENDIX F SUMMARY OF NOTES
AP-F-4 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
10 × C × R
C: terminal capacitance 15 pF + parasitic capacitance ? pF
R: pull-down resistance 500 kΩ (Max.)
• Be sure to turn the noise rejector off before executing the SLP instruction.
• Reactivating from SLEEP status can only be done by generation of a key input interrupt factor. Therefore when
using the SLEEP function, it is necessary to set the interrupt select register (SIPxx = "1") of the port to be used
for releasing SLEEP status before executing the SLP instruction. Furthermore, enable the key input interrupt
using the corresponding interrupt mask register (EIKxx = "1") before executing the SLP instruction to run key
input interrupt handler routine after SLEEP status is released.
• Before the port function is configured, the circuit that uses the port (e.g. input interrupt, multiple key entry
reset, serial interface, R/F converter, event counter input, direct RUN/LAP input for stopwatch) must be dis-
abled.
Serial interface
• Perform data writing/reading to the data registers SD[7:0] only while the serial interface is not running (i.e.,
the synchronous clock is neither being input or output).
• As a trigger condition, it is required that data writing or reading on data registers SD[7:0] be performed prior to
writing "1" to SCTRG. (The internal circuit of the serial interface is initiated through data writing/reading on
data registers SD[7:0].) In addition, be sure to enable the serial interface with the ESIF register before setting
the trigger.
Supply trigger only once every time the serial interface is placed in the RUN state. Refrain from performing
trigger input multiple times, as leads to malfunctioning. Moreover, when the synchronous clock SCLK is ex-
ternal clock, start to input the external clock after the trigger.
• Setting of the input/output permutation (MSB first/LSB first) with the SDP register should be done before set-
ting data to SD[7:0].
• Be aware that the maximum clock frequency for the serial interface is limited to 1 MHz when the program-
mable timer is used as the clock source or the serial interface is used in slave mode.
LCD driver
• Be sure to turn the display off (LPWR = "0") before switching the frame frequency.
• The frame frequency affects the display quality. We recommend that the frame frequency should be determined
after the display quality is evaluated using the actual LCD panel.
• At initial reset, the contents of display memory are undefined and LC[3:0] (LCD contrast) is set to "0," there-
fore, it is necessary to initialize those contents by software. Also note that the LPWR and DSPC[1:0] registers
are set to turn the display off.
• When Pxx (P20 to P53) and R/F converter terminals are used as the segment terminals by selecting mask
option, do not alter the Pxx port and R/F converter control registers that affect these terminals from their initial
values.
Sound generator
• Since it generates a buzzer signal that is out of synchronization with the BZE register, hazards may at times be
produced when the signal goes on/off due to the setting of the BZE register.
• The one-shot output is only valid when the normal buzzer output is off (BZE = "0") and will be invalid when
the normal buzzer output is on (BZE = "1").
Integer multiplier
An operation process takes 10 CPU clock cycles (5 bus cycles) after writing to the calculation mode select register
CALMD until the operation result is set to the destination register DRH/DRL and the operation flags. While this
operation is in process, do not read/write from/to the destination register DRH/DRL and do not read NF/VF/ZF.
APPENDIX F SUMMARY OF NOTES
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation AP-F-5
(Rev. 1.1)
R/F converter
• When an error interrupt occurs, reset the overflow flag (OVMC or OVTC) by writing "1." The same error inter-
rupt will occur again if the overflow flag is not reset.
• When setting the measurement counter or time base counter, always write 5 words of data continuously in
order from the lower address (FF62H → FF63H → FF64H → FF65H → FF66H, FF67H → FF68H → FF69H
→ FF6AH → FF6BH). Furthermore, an LD instruction should be used for writing data to the measurement
counter and a read-modify-write instruction (AND, OR, ADD, SUB, etc.) cannot be used. If data other than
low-order 4 bits is written, the counter cannot be set to the desired value.
• The R/F converter reference and sensor oscillation frequencies should be determined after an adequate evalu-
ation, since low voltage, 2 V or lower in particular, increases the voltage deviation. Also the voltage deviation
depends on the environment including board, resistance, and capacitance (see RFC characteristic curves in the
"Electrical Characteristics" chapter).
SVD circuit
• To obtain a stable detection result, the SVD circuit must be on for at least 500 µsec. So, to obtain the SVD
detection result, follow the programming sequence below.
1. Set SVDON to "1"
2. Maintain for 500 µsec minimum
3. Set SVDON to "0"
4. Read SVDDT
• The SVD circuit should normally be turned off because SVD operation increase current consumption.
Flash EEPROM
• Be sure to leave the DMOD, DTXD, DRXD and DCLK terminals open during normal operation. Particularly,
make sure that the DMOD terminal is not pulled up to high from outside the IC, although the terminal is pulled
down with an internal resistor.
• The OSC1 oscillation circuit must be configured to enable oscillation when programming the Flash EEPROM
using the On Board Writer.
Precautions on MountingF.2
Oscillation circuit
• Oscillation characteristics change depending on conditions (board pattern, components used, etc.).
In particular, when a ceramic oscillator or crystal oscillator is used, use the oscillator manufacturer's recom-
mended values for constants such as capacitance and resistance.
• Disturbances of the oscillation clock due to noise may cause a malfunction. Consider the following points to
prevent this:
(1) Components which are connected to the OSC1, OSC2, OSC3 and OSC4
terminals, such as oscillators, resistors and capacitors, should be con-
nected in the shortest line.
(2) As shown in the right hand figure, make a VSS pattern as large as possible
at circumscription of the OSC1, OSC2, OSC3 and OSC4 terminals and
the components connected to these terminals. Furthermore, do not use
this VSS pattern for any purpose other than the oscillation system.
• In order to prevent unstable operation of the oscillation circuit due to current leak between OSC1/OSC3 and
VDD, please keep enough distance between OSC1/OSC3 and VDD or other signals on the board pattern.
OSC4
OSC3
VSS
Sample VSS pattern (OSC3)
APPENDIX F SUMMARY OF NOTES
AP-F-6 Seiko Epson Corporation S1C6F016 TECHNICAL MANUAL
(Rev. 1.1)
Reset circuit
• The power-on reset signal which is input to the RESET terminal changes depending on conditions (power rise
time, components used, board pattern, etc.). Decide the time constant of the capacitor and resistor after enough
tests have been completed with the application product. When using the built-in pull-down resistor of the RE-
SET terminal, take into consideration dispersion of the resistance for setting the constant.
• In order to prevent any occurrences of unnecessary resetting caused by noise during operating, components
such as capacitors and resistors should be connected to the RESET terminal in the shortest line.
Power supply circuit
•
Sudden power supply variation due to noise may cause malfunction. Consider the following points to prevent this:
(1) The power supply should be connected to the VDD and VSS terminals with patterns as short and large as
possible.
(2) When connecting between the VDD and VSS terminals with a bypass capacitor, the terminals should be
connected as short as possible.
VDD
VSS
Bypass capacitor connection example
VDD
VSS
(3) Components which are connected to the VD1 and VC1–VC3 terminals, such as capacitors, should be con-
nected in the shortest line. In particular, the VC1–VC3 voltages affect the display quality.
• Do not connect anything to the VC1–VC3 terminals when the LCD driver is not used.
Arrangement of signal lines
• In order to prevent generation of electromagnetic induction noise caused
by mutual inductance, do not arrange a large current signal line near the
circuits that are sensitive to noise such as the oscillation unit and analog
input unit.
• When a signal line is parallel with a high-speed line in long distance or
intersects a high-speed line, noise may generated by mutual interference
between the signals and it may cause a malfunction.
Do not arrange a high-speed signal line especially near circuits that are
sensitive to noise such as the oscillation unit and analog input unit.
Output terminals
• When an output terminal is used to drive an external component that con-
sumes a large amount of current, the operation of the external component
affects the built-in power supply circuit of this IC and the output voltage
may vary. When driving a bipolar transistor by a periodic signal such as
the BZ or timer output in particular, it may cause variations in the voltage
output from the LCD system voltage circuit that affects the contrast of
the LCD display. To prevent this, separate the traces on the printed circuit
board. Put one between the power supply and the IC's VDD and VSS termi-
nals, and another between the power supply and the external component
that consumes the large amount of current. Furthermore, use an external
component with as low a current consumption as possible.
VDD
VSS
Piezo
BZ
CP
Example: Buzzer output circuit
+
OSC4
OSC3
VSS
Large current signal line
High-speed signal line
Prohibited pattern example
APPENDIX F SUMMARY OF NOTES
S1C6F016 TECHNICAL MANUAL Seiko Epson Corporation AP-F-7
(Rev. 1.1)
Precautions for Visible Radiation (when bare chip is mounted)
• Visible radiation causes semiconductor devices to change electrical characteristics. It may cause the IC to
malfunction or the nonvolatile memory data to be erased. When developing products, consider the following
precautions to prevent malfunctions caused by visible radiation.
(1) Design the product and bond the IC on the board so that it is shielded from visible radiation in actual
use.
(2) The inspection process of the product needs an environment that shields the IC from visible radiation.
(3) Shield not only the face of the IC but the back and side as well.
(4) After the shielded package has been opened, the IC chip should be bonded on the board within one week.
If the IC chip must be stored after the package has been opened, be sure to shield the IC from visible
radiation.
(5) If there is a possibility that heat stress exceeding the reflow soldering condition is applied to the IC in the
bonding process, perform enough evaluation of data stored in the nonvolatile memory before the product
is shipped.
REVISION HISTORY
Revision History
Code No. Page Contents
411801400 All New establishment
411801401a 1-1 1 Outline
(Old) The S1C6F016 allows choice from six different models by mask-option selections and shipment
form selections as shown in Table 1.1.
(New) The S1C6F016 allows choice from eight different models by mask-option selections and shipment
form selections as shown in Table 1.1.
Modified Table 1.1. (Added Type G.)
1.1 Features
(Old) Instruction execution time ... During operation at 4 MHz: 0.5 µsec 1 µsec 1.3 µsec
(New) Instruction execution time ... During operation at 4 MHz: 0.5 µsec 1 µsec 1.5 µsec
1-3 1.3 Mask Option
(Old) S1C6F016 provides two standard mask option models (Type B and Type E) and a custom mask
option model that allows selection of each optional specification. (See Table 1.1.) ... Mask pattern
of the IC is finally generated based on the data created by winfog and winsog. Refer to the “S5U-
1C63000A Manual” for these tools.
(New) S1C6F016 provides three standard mask option models (Type B, Type E, and Type G) and a cus-
tom mask option model that allows selection of each optional specification. (See Table 1.1 and
Tables 1.3.1–1.3.5.) ... Mask pattern of the IC is finally generated based on the data created by
winfog and winsog. (The mask pattern for the segment option will be generated using only the seg-
ment output specification (S) in the custom mask option data created by winsog. The segment al-
location data must be programmed.)
Refer to the “S5U1C63000A Manual” for winfog and winsog.
1.3 Mask Option
(2) OSC3 oscillation circuit
(Old) ... The standard mask option Type B model is configured with a ceramic oscillation circuit and Type
E model is configured with a CR oscillation circuit (external R).
(New) ... The standard mask option Type B model is configured with a ceramic oscillation circuit. The Type
E and Type G models are configured with a CR oscillation circuit (external R).
1.3 Mask Option
(4) SEG/GPIO/RFC selector
(Old) ... The standard mask option Type B model is configured for the I/O port or R/F converter pins.
(New) ... The standard mask option Type B and Type G models are configured for the I/O port or R/F con-
verter pins.
1.3 Mask Option
(5) I/O port pull-down resistor
(Old) ... The standard mask option models have built-in pull-down resistors for all I/O ports.
(New) ... The standard mask option Type B and Type E models have built-in pull-down resistors for all I/O
ports. The standard mask option Type G model has no built-in pull-down resistors for P10 and P11
and all other I/O ports include a pull-down resistor.
1-4 1.3 Mask Option
(10) LCD segment specification
(Old) The display memory bits can be allocated to a desired SEG terminal. It is also possible to set SEG
terminals for DC output.
(New) The LCD segment specification of the custom mask option model and standard mask option Type
B and Type E models is fixed at LCD segment output (S). The LCD segment specification of the
standard mask option Type G model is fixed at DC complementary output (C).
1-4 to 6 1.3 Mask Option
Modified Table 1.3.1.
(Old) –
(New) Added Type G.
1-9 1.3 Mask Option
Modified Table 1.3.4.
(Old) –
(New) Replaced with Table 1.3.4 Segment option (standard mask option Type G).
1-10 1.3 Mask Option
Added Table 1.3.5.
(Old) –
(New) Table 1.3.5 Segment option (custom mask option), Modified earlier Table 1.3.4.
2-5 2.2 Pin Description
(Old) Note: The test terminals must be connected to the power supply or left open as shown below.
... TEST3: Leave open.
(New) Notes: • The test terminals must be connected to the power supply or left open as shown below.
Be sure to avoid applying other conditions to the terminals during normal operation.
... TEST3: Leave open.
• Be sure to leave the DMOD, DTXD, DRXD and DCLK terminals open during normal oper-
ation. Particularly, make sure that the DMOD terminal is not pulled up to high from outside
the IC, although the terminal is pulled down with an internal resistor.
REVISION HISTORY
Code No. Page Contents
411801401a 3-1 3.2.2 Flash EEPROM Specifications
(Old) –
(New) Notes: • Be sure to leave the DMOD, DTXD, DRXD and DCLK terminals open during normal oper-
ation. Particularly, make sure that the DMOD terminal is not pulled up to high from outside
the IC, although the terminal is pulled down with an internal resistor.
• The OSC1 oscillation circuit must be configured to enable oscillation when programming
the Flash EEPROM using the On Board Writer.
3-3 3.3.3 Display Memory
(Old) ... Each bit can be assigned to the specific segment terminal (SEG0–SEG55) by mask option.
(New) ... Each bit can be assigned to the specific segment terminal (SEG0–SEG55) by programming the
Flash EEPROM with the segment assignment data created using the segment option generator
“winsog.”
4-1 4.2 Reset Terminal (RESET)
(Old) Therefore in normal operation, a maximum of 1,024/fOSC1 seconds (32 msec when fOSC1 = 32.768
kHz) is needed until the internal initial reset is released after the reset terminal goes to low level.
Be sure to maintain a reset input of 0.1 msec or more.
(New) Therefore in normal operation, a maximum of 1,024/fOSC1 seconds (32 msec when fOSC1 = 32.768
kHz) is needed until the internal initial reset is released after the reset terminal goes to low level.
After the internal initial reset is released, the hardware executes an initial processing that takes
21,515/fOSC1 seconds (657 msec when fOSC1 = 32.768 kHz) before the CPU starts operating. Be
sure to maintain a reset input of 0.1 msec or more.
5-3 5.5 I/O Memory for Power Supply Circuit
(Old) VCREF: VC regulator reference voltage select register (FF02H•D2)
(New) VCREF: VC regulator reference voltage select register (FF03H•D1)
6-2 6.1 Configuration of Interrupt Controller
Modified Figure 6.1.1.
(Old) ISW0, EISW0
(New) ISW10, EISW10
7-1 7.1.2 Mask Option
(Old) Standard mask option Type E
(New) Standard mask option Type E and Type G
7-2 7.1.4 OSC3 Oscillation Circuit
(Old) Standard mask option Type E: CR (external R) (fixed)
(New) Standard mask option Type E and Type G: CR (external R) (fixed)
7-4 7.3 HALT and SLEEP
SLEEP mode
(Old) ... Therefore, set the following flag and the registers for the I/O port to be used to cancel SLEEP
status before executing the SLP instruction.
• Interrupt flag (I flag) = “1” (interrupts are enabled)
• Interrupt select register SIPxx = “1” (the Pxx I/O port interrupt is selected)
• Interrupt mask register EIKxx = “1” (the Pxx I/O port interrupt is enabled)
• Noise rejector select register NRSPxx = “00” (noise rejector is bypassed)
(New) ... To ensure that the system enters and cancels SLEEP mode properly, follow the procedure
shown below to configure/confirm the CPU clock, interrupt flag, the P0x (P1x) I/O port used to can-
cel SLEEP mode, and the port input level.
1. Set the CPU system clock switching register CLKCHG to “0.” (The OSC1 clock is selected.)
2. Set the interrupt select register SIPxx to “1.” (The P0x (P1x) I/O port interrupt is selected.)
3. Set the interrupt mask register EIKxx to “1.” (The P0x (P1x) I/O port interrupt is enabled.)
4. Set the key input interrupt noise reject frequency select register NRSPxx to “00.” (The noise
rejector is bypassed.)
5. Write “1” to the interrupt factor flag IKxx. (The P0x (P1x) interrupt factor flag is reset.)
6. Set the interrupt flag (I flag) to “1.” (Interrupts are enabled.)
7a. Make sure the P0x (P1x) port input level is high when P0x (P1x) port interrupt polarity select
register PCPxx = “1” (generates an interrupt request at the falling edge).
7b. Make sure the P0x (P1x) port input level is low when P0x (P1x) port interrupt polarity select
register PCPxx = “0” (generates an interrupt request at the rising edge).
8. Execute the SLP instruction.
12-1 12.1 Configuration of I/O Ports
(Old) (The standard mask option model comes with pull-down resistors.)
(New) (The standard mask option models come with or without pull-down resistors.)
12-2 12.2 Mask Option
Custom mask option
(Old) –
(New) The I/O ports P20–P53 input/output terminals are shared with the SEG terminals. This mask option
allows selection of whether each of these terminals is used for the I/O port or the SEG output. Re-
fer to “Mask Option” in the “LCD Driver” chapter for details.
REVISION HISTORY
Code No. Page Contents
411801401a 12-3 12.2 Mask Option
(Old) –
(New) Standard mask option Type G
The output specification for output mode is fixed at complementary output.
The internal pull-down resistor is connected to the I/O ports except for P10 and P11.
12-4 12.6 Key Input Interrupt Function
Corrected Figure 12.6.1 (SLEEP cancellation path).
12-5 12.6 Key Input Interrupt Function
(Old) When the interrupt mask register (EIKxx) is set to “0,” the interrupt request is masked and no inter-
rupt is generated to the CPU. However, SLEEP mode can be canceled regardless of the interrupt
mask register setting.
(New) When the interrupt mask register (EIKxx) is set to “0,” the interrupt request is masked and no inter-
rupt is generated to the CPU.
12-7 12.7 I/O memory of I/O ports
Px[3:0]: Px I/O port data register (FFxxH)
(Old) 10 × C × R
C: terminal capacitance 5 pF + parasitic capacitance ? pF
R: pull-down resistance 375 kΩ (Max.)
(New) 10 × C × R
C: terminal capacitance 15 pF + parasitic capacitance ? pF
R: pull-down resistance 500 kΩ (Max.)
12-10 12.8 Precautions
(Old) 10 × C × R
C: terminal capacitance 5 pF + parasitic capacitance ? pF
R: pull-down resistance 375 kΩ (Max.)
(New) 10 × C × R
C: terminal capacitance 15 pF + parasitic capacitance ? pF
R: pull-down resistance 500 kΩ (Max.)
13-2 13.3 Mask Option
(Old) Standard mask option (Type B and Type E)
The output specification of the I/O port is fixed as a complementary output.
All the I/O port terminals have a built-in pull-down resistor.
(New) Standard mask option Type B, Type E, and Type G
The output specification of the P30–P33 I/O ports is fixed at a complementary output.
The P30–P33 I/O port terminals have a built-in pull-down resistor
13-6 13.6.4 SRDY Signal
• When negative polarity (SCPS1 = “1”) is selected for the synchronous clock:
(Old) ... The SRDY signal changes from “1” to “0” immediately after “1” is written to SCTRG and returns
from “0” to “1” when “0” is input to the SRDY (P30) terminal (i.e., when the serial input/output begins
transmitting or receiving data).
(New) ... The SRDY signal changes from “1” to “0” immediately after “1” is written to SCTRG and returns
from “0” to “1” when “0” is input to the SCLK (P30) terminal (i.e., when the serial input/output begins
transmitting or receiving data).
14-1 14.2.1 SEG/GPIO/RFC Terminal Configuration
(Old) Custom mask option
The SEG0 to SEG35 terminals are fixed at segment/DC outputs. ...
Standard mask option Type B
The SEG0 to SEG35 terminals can only be used for segment/DC outputs. ...
Standard mask option Type E
...
The SEG0 to SEG35 terminals can also be used for DC outputs.
(New) Custom mask option
The SEG0 to SEG35 terminals are fixed at segment output. ...
Standard mask option Type B
The SEG0 to SEG35 terminals can only be used for segment outputs. ...
The SEG0 to SEG35 terminals cannot be used for DC outputs.
Standard mask option Type E
...
The SEG0 to SEG55 terminals cannot be used for DC outputs.
Standard mask option Type G
The SEG0 to SEG35 terminals can only be used for DC outputs. The SEG36 to SEG55 terminals
are not available, as they are all configured to the I/O port and R/F converter terminals.
The SEG0 to SEG35 terminals cannot be used for segment outputs.
14-2 14.2.2 for LCD Driving
(Old) –
(New) Standard mask option Type G
The power source is set to the internal LCD system voltage regulator, but it is not used, as Type G
supports DC output only.
REVISION HISTORY
Code No. Page Contents
411801401a 14-2 to 3 14.2.3 Segment Option
(Old) Segment option is available for both custom mask option and standard mask option models.
Segment allocation
The display memory addresses (F000H–F07FH) and the data bits (D0–D3) can be allocated to a
segment terminal (SEG0–SEG55) individually. This makes design easy by increasing the degree of
freedom with which the LCD panel can be designed.
Figure 14.2.3.1 shows an example of the relationship between the LCD segments (on the panel)
and the display memory for the case of 1/4 duty.
(Figure)
Figure 14.2.3.1 Segment allocation
Output specification
Each of SEG0–SEG35 terminals can be configured for either segment signal output or DC output
(VDD and VSS binary output) by mask option.
When DC output is selected, either complementary output or N-channel open drain output can be
selected as the output specification for each terminal pair. When DC output is selected, the data
corresponding to COM0 of each segment terminal is output. DC output can be performed even if
the LCD system voltage regulator is off (LPWR = “0”).
The SEG36–SEG55 terminals can be used only for segment signal output. DC output cannot be
selected.
(New) Output specification
Custom mask option
The SEG0–SEG55 terminals can be used only for segment signal output. DC output cannot be se-
lected.
Standard mask option Type B
The SEG0–SEG35 terminals can be used only for segment signal output. DC output cannot be se-
lected.
Standard mask option Type E
The SEG0–SEG55 terminals can be used only for segment signal output. DC output cannot be se-
lected.
Standard mask option Type G
The SEG0–SEG35 terminals can be used only for DC output (VDD and VSS binary output). Seg-
ment output cannot be selected. The output specification is fixed at complementary output. Each
segment terminal outputs COM0 data.
Segment allocation
Note: Segment allocation is not a mask option item. Create segment allocation data that repre-
sents corresponding between display memory bits and segment terminals) using the seg-
ment option generator “winsog” and program the Flash EEPROM with the created data.
Custom mask option, standard mask option Type B and Type E
Each data bits (D0–D3) of the display memory addresses (F000H–F07FH) can be allocated to a
segment terminal (SEG0–SEG55) individually. This makes design easy by increasing the degree of
freedom with which the LCD panel can be designed.
Figure .2.3.1 shows an example of the relationship between the LCD segments (on the panel) and
the display memory for the case of 1/4 duty.
(Corrected the figure.)
Figure 14.2.3.1 Segment allocation
Standard mask option Type G
Each data bits (D0–D3) of the display memory addresses (F000H–F07FH) can be allocated to a
segment terminal (SEG0–SEG35) individually. The terminals output the contents of the address/bit
corresponding to COM0, so it is not necessary to allocate addresses/bits to COM1–COM7.
14-6 14.2.3 Segment Option
Modified Table 14.2.3.3.
(Old) –
(New) Replaced with Table 14.2.3.3 Segment option (standard mask option Type G).
14-7 14.2.3 Segment Option
Added Table 14.2.3.4.
(Old) –
(New) Table 14.2.3.4 Segment option (custom mask option), Modified earlier Table 14.2.3.3.
14-16 14.4 Display Memory
(Old) The display memory is located to F000H–F07FH in the data memory area and each data bit can
be allocated to an segment terminal (SEG0–SEG55) by mask option.
(New) The display memory is located to F000H–F07FH in the data memory area and each data bit can
be allocated to an segment terminal (SEG0–SEG55) by programming the Flash EEPROM with the
segment assignment data created using the segment option generator “winsog.”
16-1 16.2 Controlling Clock Manager
Corrected Table 16.2.1.
(Old) SGCKE
(New) MDCKE
REVISION HISTORY
Code No. Page Contents
411801401a 17-11 17.8 Precautions
(Old) –
(New) • The R/F converter reference and sensor oscillation frequencies should be determined after an
adequate evaluation, since low voltage, 2 V or lower in particular, increases the voltage deviation.
Also the voltage deviation depends on the environment including board, resistance, and capaci-
tance (see RFC characteristic curves in the “Electrical Characteristics” chapter).
18-2 18.3 I/O Memory of SVD Circuit
Corrected the register table (FF05H, D1, R/W).
(Old) R/W
(New) R
20-1 to 2 20 Basic External Wiring Diagram
Recommended values for external parts
(Old) (CG1) 5 pF to 25 pF
(CG3) 15 pF (Crystal oscillation), 30 pF (Ceramic oscillation)
(CD3) 15 pF (Crystal oscillation), 30 pF (Ceramic oscillation)
(New) (CG1) 0 pF to 25 pF
(CG3) 30 pF (Ceramic oscillation)
(CD3) 30 pF (Ceramic oscillation)
20-3 20 Basic External Wiring Diagram
(Old) –
(New) Added Standard mask option Type G
AP-A-1 Appendix A List of I/O Registers
Corrected the register table (FF05H, D1, R/W).
(Old) R/W
(New) R
AP-C-3 C.2.3 Serial Programming Procedure
(4) Installing the USB-Serial conversion driver
(Required only when the USB-Serial On Board Writer is used)
(Old) The USB-Serial conversion driver was copied in the “\EPSON\S1C63\writer\driver” folder when
the S1C63 Family Assembler Package 2 (S5U1C63000A2) was installed. Specify this folder as the
driver location.
(New) The USB-Serial conversion driver was copied into the folders shown below when the S1C63 Fam-
ily Assembler Package 2 (S5U1C63000A2) was installed. Specify a folder according to the serial
number of the USB-Serial On Board Writer as the driver location.
Table C.2.3.1 USB-Serial conversion driver storing folder
(Added the table.)
AP-E-1 to 4 Appendix E S1C6F016 Mask Data Generation Procedure
Added chapter.
AP-F-1 to 7 Appendix F Summary of Notes
(Old) Appendix E
(New) Appendix F
AP-F-4 E.1 Summary of Notes by Function
I/O port
(Old) 10 × C × R
C: terminal capacitance 5 pF + parasitic capacitance ? pF
R: pull-down resistance 375 kΩ (Max.)
(New) 10 × C × R
C: terminal capacitance 15 pF + parasitic capacitance ? pF
R: pull-down resistance 500 kΩ (Max.)
AP-F-5 E.1 Summary of Notes by Function
R/F converter
(Old) –
(New) • The R/F converter reference and sensor oscillation frequencies should be determined after an
adequate evaluation, since low voltage, 2 V or lower in particular, increases the voltage deviation.
Also the voltage deviation depends on the environment including board, resistance, and capaci-
tance (see RFC characteristic curves in the “Electrical Characteristics” chapter).
E.1 Summary of Notes by Function
Flash EEPROM
(Old) • Be sure to leave the DMOD, DTXD, DRXD and DCLK terminals open during normal operation.
Particularly, make sure that the DMOD pin is not pulled down to low from outside the IC, although
the pin is pulled up with the internal resistor.
• The OSC1 and OSC3 oscillation circuits must be configured to enable oscillation when program-
ming the Flash
EEPROM using the On Board Writer.
(New) • Be sure to leave the DMOD, DTXD, DRXD and DCLK terminals open during normal operation.
Particularly, make sure that the DMOD terminal is not pulled up to high from outside the IC, al-
though the terminal is pulled down with an internal resistor.
• The OSC1 oscillation circuit must be configured to enable oscillation when programming the
Flash EEPROM using the On Board Writer.
International Sales Operations
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Phone: +1-800-228-3964 Fax: +1-408-922-0238
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IC Sales & Marketing Department
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Phone: +81-42-587-5814 Fax: +81-42-587-5117
Document Code: 411801401a
First Issue August 2009
Revised January 2013 in JAPAN L