MF1112-02 CMOS 4-BIT SINGLE CHIP MICROCOMPUTER S1C60N04 Technical Manual S1C60N04 Technical Hardware 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 products. 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. This material or portions thereof may contain technology or the subject relating to strategic products under the control of the Foreign Exchange and Foreign Trade Law of Japan and may require an export license from the Ministry of International Trade and Industry or other approval from another government agency. (c) SEIKO EPSON CORPORATION 2001 All rights reserved. The information of the product number change Starting April 1, 2001, the product number will be changed as listed below. To order from April 1, 2001 please use the new product number. For further information, please contact Epson sales representative. Configuration of product number Devices S1 C 60N01 F 0A01 00 Packing specification Specification Package (D: die form; F: QFP) Model number Model name (C: microcomputer, digital products) Product classification (S1: semiconductor) Development tools C 60R08 S5U1 D1 1 00 Packing specification Version (1: Version 1 2) Tool type (D1: Development Tool 1) Corresponding model number (60R08: for S1C60R08) Tool classification (C: microcomputer use) Product classification (S5U1: development tool for semiconductor products) 1: For details about tool types, see the tables below. (In some manuals, tool types are represented by one digit.) 2: Actual versions are not written in the manuals. Comparison table between new and previous number S1C60 Family processors Previous No. E0C6001 E0C6002 E0C6003 E0C6004 E0C6005 E0C6006 E0C6007 E0C6008 E0C6009 E0C6011 E0C6013 E0C6014 E0C60R08 New No. S1C60N01 S1C60N02 S1C60N03 S1C60N04 S1C60N05 S1C60N06 S1C60N07 S1C60N08 S1C60N09 S1C60N11 S1C60N13 S1C60140 S1C60R08 S1C62 Family processors Previous No. E0C621A E0C6215 E0C621C E0C6S27 E0C6S37 E0C623A E0C623E E0C6S32 E0C6233 E0C6235 E0C623B E0C6244 E0C624A E0C6S46 New No. S1C621A0 S1C62150 S1C621C0 S1C6S2N7 S1C6S3N7 S1C6N3A0 S1C6N3E0 S1C6S3N2 S1C62N33 S1C62N35 S1C6N3B0 S1C62440 S1C624A0 S1C6S460 Previous No. E0C6247 E0C6248 E0C6S48 E0C624C E0C6251 E0C6256 E0C6292 E0C6262 E0C6266 E0C6274 E0C6281 E0C6282 E0C62M2 E0C62T3 New No. S1C62470 S1C62480 S1C6S480 S1C624C0 S1C62N51 S1C62560 S1C62920 S1C62N62 S1C62660 S1C62740 S1C62N81 S1C62N82 S1C62M20 S1C62T30 Comparison table between new and previous number of development tools Development tools for the S1C60/62 Family Previous No. ASM62 DEV6001 DEV6002 DEV6003 DEV6004 DEV6005 DEV6006 DEV6007 DEV6008 DEV6009 DEV6011 DEV60R08 DEV621A DEV621C DEV623B DEV6244 DEV624A DEV624C DEV6248 DEV6247 New No. S5U1C62000A S5U1C60N01D S5U1C60N02D S5U1C60N03D S5U1C60N04D S5U1C60N05D S5U1C60N06D S5U1C60N07D S5U1C60N08D S5U1C60N09D S5U1C60N11D S5U1C60R08D S5U1C621A0D S5U1C621C0D S5U1C623B0D S5U1C62440D S5U1C624A0D S5U1C624C0D S5U1C62480D S5U1C62470D Previous No. DEV6262 DEV6266 DEV6274 DEV6292 DEV62M2 DEV6233 DEV6235 DEV6251 DEV6256 DEV6281 DEV6282 DEV6S27 DEV6S32 DEV6S37 EVA6008 EVA6011 EVA621AR EVA621C EVA6237 EVA623A New No. S5U1C62620D S5U1C62660D S5U1C62740D S5U1C62920D S5U1C62M20D S5U1C62N33D S5U1C62N35D S5U1C62N51D S5U1C62560D S5U1C62N81D S5U1C62N82D S5U1C6S2N7D S5U1C6S3N2D S5U1C6S3N7D S5U1C60N08E S5U1C60N11E S5U1C621A0E2 S5U1C621C0E S5U1C62N37E S5U1C623A0E Previous No. EVA623B EVA623E EVA6247 EVA6248 EVA6251R EVA6256 EVA6262 EVA6266 EVA6274 EVA6281 EVA6282 EVA62M1 EVA62T3 EVA6S27 EVA6S32R ICE62R KIT6003 KIT6004 KIT6007 New No. S5U1C623B0E S5U1C623E0E S5U1C62470E S5U1C62480E S5U1C62N51E1 S5U1C62N56E S5U1C62620E S5U1C62660E S5U1C62740E S5U1C62N81E S5U1C62N82E S5U1C62M10E S5U1C62T30E S5U1C6S2N7E S5U1C6S3N2E2 S5U1C62000H S5U1C60N03K S5U1C60N04K S5U1C60N07K CONTENTS CONTENTS CHAPTER 1 INTRODUCTION ____________________________________________ 1 1.1 1.2 1.3 1.4 CHAPTER Features ........................................................................................................ 1 Block Diagram .............................................................................................. 2 Pin Layout ..................................................................................................... 3 Pin Description ............................................................................................. 3 2 POWER SUPPLY AND INITIAL RESET _____________________________ 4 2.1 2.2 Power Supply ................................................................................................ 4 Initial Reset ................................................................................................... 4 2.2.1 Power-on reset circuit ................................................................................ 5 2.2.2 Reset pin (RESET) ...................................................................................... 5 2.2.3 Simultaneous high input to input ports (K00-K03) .................................. 5 2.2.4 Internal register following initialization ................................................... 5 2.3 CHAPTER 3 CPU, ROM, RAM________________________________________ 6 3.1 3.2 3.3 CHAPTER Test Pin (TEST) ............................................................................................. 5 CPU ............................................................................................................... 6 ROM .............................................................................................................. 6 RAM .............................................................................................................. 6 4 PERIPHERAL CIRCUITS AND OPERATION __________________________ 7 4.1 4.2 4.3 Memory Map ................................................................................................. 7 Oscillation Circuit ........................................................................................ 9 Input Ports (K00-K03) ................................................................................ 10 4.3.1 Configuration of input port ....................................................................... 10 4.3.2 Interrupt function ...................................................................................... 10 4.3.3 Mask option ............................................................................................... 11 4.3.4 I/O memory of input port .......................................................................... 12 4.3.5 Programming note ..................................................................................... 12 4.4 Output Ports (R00-R03) .............................................................................. 13 4.4.1 Configuration of output port ..................................................................... 13 4.4.2 Mask option ............................................................................................... 13 4.4.3 I/O memory of output port ........................................................................ 14 4.4.4 Programming note ..................................................................................... 15 4.5 I/O Ports (P00-P03) .................................................................................... 16 4.5.1 Configuration of I/O port .......................................................................... 16 4.5.2 I/O control register and I/O mode ............................................................ 16 4.5.3 Mask option ............................................................................................... 16 4.5.4 I/O memory of I/O port ............................................................................. 16 4.5.5 Programming note ..................................................................................... 17 4.6 LCD Driver (COM0-COM3, SEG0-SEG25) ............................................. 18 4.6.1 Configuration of LCD driver .................................................................... 18 4.6.2 Mask option ............................................................................................... 23 4.6.3 I/O memory of LCD driver ........................................................................ 24 4.6.4 Programming note ..................................................................................... 24 S1C60N04 TECHNICAL MANUAL EPSON i CONTENTS 4.7 Clock Timer .................................................................................................. 25 4.7.1 Configuration of clock timer ..................................................................... 25 4.7.2 Interrupt function ...................................................................................... 25 4.7.3 I/O memory of clock timer ........................................................................ 26 4.7.4 Programming notes ................................................................................... 27 4.8 Interrupt and HALT/SLEEP ........................................................................ 28 4.8.1 Interrupt factors ........................................................................................ 30 4.8.2 Specific masks for interrupt ...................................................................... 30 4.8.3 Interrupt vectors ........................................................................................ 31 4.8.4 I/O memory of interrupt ............................................................................ 31 4.8.5 Programming notes ................................................................................... 32 CHAPTER 5 BASIC EXTERNAL WIRING DIAGRAM ____________________________ 33 CHAPTER 6 ELECTRICAL CHARACTERISTICS ________________________________ 34 6.1 6.2 6.3 6.4 6.5 6.6 CHAPTER 7 PACKAGE ________________________________________________ 37 7.1 7.2 CHAPTER ii Plastic Package............................................................................................ 37 Ceramic Package for Test Samples ............................................................. 38 8 PAD LAYOUT _____________________________________________ 39 8.1 8.2 CHAPTER Absolute Maximum Rating ........................................................................... 34 Recommended Operating Conditions .......................................................... 34 DC Characteristics ...................................................................................... 35 Current Consumption .................................................................................. 36 Oscillation Characteristics .......................................................................... 36 LCD Characteristic ..................................................................................... 36 Diagram of Pad Layout ............................................................................... 39 Pad Coordinates .......................................................................................... 39 9 PRECAUTIONS ON MOUNTING _________________________________ 40 EPSON S1C60N04 TECHNICAL MANUAL CHAPTER 1: INTRODUCTION CHAPTER 1 INTRODUCTION The S1C60N04 is a single-chip microcomputer which uses an S1C6200B CMOS 4-bit CPU as the core. It contains a 1,536 (words) x 12 (bits) ROM, 144 (words) x 4 (bits) RAM, LCD driver, 4-bit input port (K00- K03), 4-bit output port (R00-R03), 4-bit I/O port (P00-P03) and a timer. 1.1 Features Core CPU ........................................... S1C6200B Built-in oscillation circuit ............. CR oscillation circuit, 2 MHz (Typ.) (VSS = -5 V) Instruction set .................................. 100 instructions ROM capacity ................................... 1,536 words x 12 bits RAM capacity ................................... 144 words x 4 bits Input port .......................................... 4 bits (pull-down resistors are available by mask option) Output ports ..................................... 4 bits (clock and buzzer outputs are possible by mask option) R03 output port drivability: 15 mA (VSS = -4.5 V) I/O port .............................................. 4 bits LCD driver ........................................ 26 segments x 4, 3 or 2 commons (1/4, 1/3 or 1/2 duty are selectable by mask option) Timer .................................................. 1 system built-in Interrupt ............................................ External: Input port interrupt Internal: Timer interrupt 1 system 1 system Supply voltage ................................. 2.7 V to 3.6 V, 4.5 V to 5.5 V Current consumption (Typ.) ......... During SLEEP: 100 nA (3 V) 100 nA (5 V) During HALT: 330 A (3 V) (LCD ON) 1000 A (5 V) During operation: 450 A (3 V) (LCD ON) 1100 A (5 V) Supply form ..................................... Die form or QFP12-48pin plastic package S1C60N04 TECHNICAL MANUAL EPSON 1 CHAPTER 1: INTRODUCTION 1.2 Block Diagram ROM System Reset Control 1,536 words x 12 bits RESET Core CPU S1C6200B OSC1 OSC2 OSC / SLEEP Interrupt Generator RAM Input Port K00-K03 144 words x 4 bits COM0-3 SEG0-25 VDD VSS TEST LCD Driver I/O Port 26 SEG x 4 COM Power Divider P00-P03 VL1 VL2 R00 (FOUT, BUZZER)1 R01 (BUZZER)1 R02, R03 Output Port Clock Timer FOUT & Buzzer 1: Terminal specifications can be selected by mask option. Fig. 1.2.1 S1C60N04 block diagram 2 EPSON S1C60N04 TECHNICAL MANUAL CHAPTER 1: INTRODUCTION 1.3 Pin Layout QFP12-48pin 36 25 37 No. Pin name No. Pin name No. Pin name No. Pin name 24 INDEX 48 13 1 12 1 2 3 4 5 6 7 8 9 10 11 12 K02 K01 K00 P03 P02 P01 P00 R03 R02 R01 R00 SEG25 13 14 15 16 17 18 19 20 21 22 23 24 SEG24 SEG23 SEG22 SEG21 SEG20 SEG19 SEG18 SEG17 SEG16 SEG15 SEG14 SEG13 25 26 27 28 29 30 31 32 33 34 35 36 SEG12 SEG11 SEG10 SEG9 SEG8 SEG7 SEG6 SEG5 SEG4 SEG3 SEG2 SEG1 37 38 39 40 41 42 43 44 45 46 47 48 SEG0 COM0 COM1 COM2 COM3 TEST RESET VDD OSC1 OSC2 VSS K03 Fig. 1.3.1 S1C60N04 pin layout (QFP12-48pin) 1.4 Pin Description Table 1.4.1 Pin description Pin name VDD VSS OSC1 OSC2 K00-K03 P00-P03 R00 R01 R02, R03 SEG0-25 COM0-3 RESET TEST Pin No. 44 47 45 46 3-1, 48 7-4 I/O (I) (I) I O I I/O 11 10 9, 8 37-12 38-41 43 42 O O O O O I I Function Power supply pin (+) Power supply pin (-) CR oscillation input pin CR oscillation output pin Input port pin I/O port pin Output port pin, BUZZER or FOUT output pin * Output port pin or BUZZER output pin * Output port pin LCD segment output pin or DC output pin * LCD common output pin (1/4 duty, 1/3 or 1/2 duty are selectable *) Initial reset input pin Input pin for test Can be selected by mask option S1C60N04 TECHNICAL MANUAL EPSON 3 CHAPTER 2: POWER SUPPLY AND INITIAL RESET CHAPTER 2 POWER SUPPLY AND INITIAL RESET 2.1 Power Supply With a single external power supply () supplied to VDD through VSS, the S1C60N04 generates the necessary internal voltages with the power divider. Supply voltage: 2.7 to 3.6 V or 4.5 V to 5.5 V The power divider generates the LCD drive voltages <VL1, VL2> by dividing the supply voltage as shown in Figure 2.1.1. The circuit configuration is set according to the LCD drive bias selection with a mask option. When 1/3 bias is selected, the supply voltage is divided by 3 to generate VL1 and VL2. When 1/2 bias is selected, the supply voltage is divided by 2 and VL1 and VL2 is shorted internally. 1/4, 1/3 or 1/2 duty, 1/3 bias 1/4, 1/3 or 1/2 duty, 1/2 bias VDD VDD VL1 = 1/3*VSS VL1 = 1/2*VSS 3.0/5.0 V 3.0/5.0 V VL2 = 2/3*VSS VL2 = 1/2*VSS VSS VSS Note: VL1 and VL2 are shorted internally. Fig. 2.1.1 Configuration of power divider 2.2 Initial Reset To initialize the S1C60N04 circuits, an initial reset must be executed. There are three ways of doing this. (1) Initial reset by the power-on reset circuit (2) External initial reset via the RESET pin (3) External initial reset by simultaneous high input to pins K00-K03 (depending on mask option) Figure 2.2.1 shows the configuration of the initial reset circuit. OSC1 OSC1 OSC2 Oscillation circuit K00 Power-on reset circuit Vss K01 Noise rejection circuit K02 Noise rejection circuit Initial reset K03 RESET Vss Fig. 2.2.1 Configuration of initial reset circuit 4 EPSON S1C60N04 TECHNICAL MANUAL CHAPTER 2: POWER SUPPLY AND INITIAL RESET 2.2.1 Power-on reset circuit The power-on reset circuit outputs the initial reset signal at power-on until the oscillation circuit starts oscillating. Note: The power-on reset circuit may not work properly due to unstable or lower voltage input. The following two initial reset method are recommended to generate the initial reset signal. 2.2.2 Reset pin (RESET) An initial reset can be invoked externally by making the reset pin high. When the reset pin goes low the CPU begins to operate. 2.2.3 Simultaneous high input to input ports (K00-K03) Table 2.2.3.1 Input port combinations Another way of invoking an initial reset externally is to input a high signal simultaneously to the input ports (K00-K03) selected A Not used with the mask option. The specified input port pins must be kept B K00*K01 high for at least 1 sec (when oscillating frequency fosc = 2 MHz), C K00*K01*K02 tolerance is within 5%, because of the noise rejection circuit. Table D K00*K01*K02*K03 2.2.3.1 shows the combinations of input ports (K00-K03) that can be selected with the mask option. When, for instance, mask option D (K00*K01*K02*K03) is selected, an initial reset is executed when the signals input to the four ports K00-K03 are all high at the same time. When this function is used, make sure that the specified ports do not go high at the same time during normal operation. 2.2.4 Internal register following initialization An initial reset initializes the CPU as shown in the table below. Table 2.2.4.1 Initial values CPU Core Name Symbol Bit size Program counter step PCS 8 Program counter page PCP 4 New page pointer NPP 4 Stack pointer SP 8 Index register X X 8 Index register Y Y 8 Register pointer RP 4 General-purpose register A A 4 General-purpose register B B 4 Interrupt flag I 1 Decimal flag D 1 Zero flag Z 1 Carry flag C 1 Initial value 00H 1H 1H Undefined Undefined Undefined Undefined Undefined Undefined 0 0 Undefined Undefined Peripheral Circuits Bit size Initial value RAM 144x4 Undefined Display memory 26x4 Undefined Other peripheral circuits - See Section 4.1, "Memory Map". Name 2.3 Test Pin (TEST) This pin is used when IC is inspected for shipment. During normal operation connect it to VSS. S1C60N04 TECHNICAL MANUAL EPSON 5 CHAPTER 3: CPU, ROM, RAM CHAPTER 3 CPU, ROM, RAM 3.1 CPU The S1C60N04 employs the S1C6200B core CPU, so that register configuration, instructions, and so forth are virtually identical to those in other processors in the family using the S1C6200/6200A/6200B. Refer to the "S1C6200/6200A Core CPU Manual" for details of the S1C6200B, which is compatible with the S1C6200A. Note the following points with regard to the S1C60N04: (1) Since the S1C60N04 provides the SLEEP function, the SLP instruction can be used. (2) Because the ROM capacity is 1,536 words, 12 bits per word, bank bits are unnecessary, and PCB and NBP are not used. (3) The RAM page is set to 0 only, so the page part (XP, YP) of the index register that specifies addresses is invalid. PUSH XP POP XP LD XP,r LD r,XP PUSH YP POP YP LD YP,r LD r,YP 3.2 ROM The built-in ROM, a mask ROM for the program, has a capacity of 1,536 x 12-bit steps. The program area is 6 pages (0-5), each consisting of 256 steps (00H-FFH). After an initial reset, the program start address is set to page 1, step 00H. The interrupt vectors are allocated to page 1, steps 01H-07H. Bank 0 Step 00H Page 0 Step 01H Interrupt vector area Page 1 Page 2 Page 3 Program start address Step 07H Step 08H Page 4 Page 5 Program area Step FFH 12 bits Fig. 3.2.1 ROM configuration 3.3 RAM The RAM, a data memory for storing a variety of data, has a capacity of 144 words, 4-bit words. When programming, keep the following points in mind: (1) Part of the data memory is used as stack area when saving subroutine return addresses and registers, so be careful not to overlap the data area and stack area. (2) Subroutine calls and interrupts take up three words on the stack. (3) Data memory 000H-00FH is the memory area pointed by the register pointer (RP). 6 EPSON S1C60N04 TECHNICAL MANUAL CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (Memory Map) CHAPTER 4 PERIPHERAL CIRCUITS AND OPERATION Peripheral circuits (timer, I/O, and so on) of the S1C60N04 are memory mapped. Thus, all the peripheral circuits can be controlled by using memory operations to access the I/O memory. The following sections describe how the peripheral circuits operate. 4.1 Memory Map The data memory of the S1C60N04 has an address space of 188 words, of which 32 words are allocated to display memory and 12 words, to I/O memory. Figure 4.1.1 show the overall memory map for the S1C60N04, and Table 4.1.1, the memory maps for the peripheral circuits (I/O space). Address Low 0 Page 1 2 3 4 5 6 7 8 9 A B C D E F High 0 M0 M1 M2 M3 M4 M5 M6 M7 M8 M9 MA MB MC MD ME MF 1 2 3 4 5 RAM area (000H-08FH) 144 words x 4 bits (R/W) 6 0 7 8 9 A Display memory area (090H-0AFH) 32 words x 4 bits (W only) B C D E I/O memory See Table 4.1.1 F Unused area Fig. 4.1.1 Memory map Note: Memory is not mounted in unused area within the memory map and in memory area not indicated in this chapter. For this reason, normal operation cannot be assured for programs that have been prepared with access to these areas. S1C60N04 TECHNICAL MANUAL EPSON 7 CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (Memory Map) Table 4.1.1 I/O memory map Address Register Comment 1 0 Name Init 1 2 High K03 Low - K03 K02 K01 K00 - 2 High K02 Low 0E0H K0 input port data - 2 High K01 Low R - 2 High K00 Low TM3 Clock timer data (2 Hz) - 2 TM3 TM2 TM1 TM0 - 2 TM2 Clock timer data (4 Hz) 0E4H - 2 TM1 Clock timer data (8 Hz) R - 2 TM0 Clock timer data (16 Hz) EIK03 0 Enable Mask Interrupt mask register (K03) EIK03 EIK02 EIK01 EIK00 EIK02 0 Enable Mask Interrupt mask register (K02) 0E8H EIK01 0 Enable Mask Interrupt mask register (K01) R/W EIK00 0 Enable Mask Interrupt mask register (K00) 0 3 Unused - 2 - - 0 EIT2 EIT8 EIT32 EIT2 0 Enable Mask Interrupt mask register (clock timer 2 Hz) 0EBH EIT8 0 Enable Mask Interrupt mask register (clock timer 8 Hz) R R/W EIT32 0 Enable Mask Interrupt mask register (clock timer 32 Hz) 0 3 - 2 Unused - - 0 0 0 IK0 0 3 - 2 Unused - - 0EDH 0 3 - 2 Unused - - R IK0 4 0 Interrupt factor flag (K00-K03) Yes No 0 3 - 2 Unused - - 0 IT2 IT8 IT32 IT2 4 0 Interrupt factor flag (clock timer 2 Hz) Yes No 0EFH IT8 4 0 Interrupt factor flag (clock timer 8 Hz) Yes No R IT32 4 0 Interrupt factor flag (clock timer 32 Hz) Yes No High R03 Low R03 output port data 0 R00 R01 High R02 Low R02 output port data 0 R03 R02 FOUT High Low R01 output port data 0 BUZZER BUZZER R01 0F3H On Buzzer output On/Off control BUZZER Off 0 High R00 Low R00 output port data 0 R/W On FOUT output On/Off control FOUT Off 0 Buzzer inverted output On/Off control On BUZZER Off 0 P03 - 2 High Low P03 P02 P01 P00 - 2 High P02 Low 0F6H P0 I/O port data - 2 High P01 Low R/W 2 - P00 High Low 0 3 - 2 - Unused - 0 TMRST 0 0 TMRST3 Reset Reset Clock timer reset - 0F9H 0 3 - 2 - Unused - R W R 0 3 - 2 - Unused - 0 3 Unused - 2 - - 0 0 0 PDON 0 3 - 2 Unused - - 0FBH 0 3 - 2 Unused - - R R/W PDON 0 LCD power supply On/Off control On Off 0 3 Unused - 2 - - 0 0 0 IOC 0 3 - 2 Unused - - 0FCH 0 3 - 2 Unused - - R R/W IOC 0 Output Input I/O port I/O control XBZR 0 2 kHz 4 kHz Buzzer frequency control XBZR 0 0 0 0 3 - 2 - Unused - 0FDH 0 3 - 2 - Unused - R/W R 0 3 - 2 - Unused - 1 Initial value at initial reset 3 Always "0" being read 2 Not set in the circuit 4 Reset (0) immediately after being read 8 D3 D2 D1 D0 EPSON S1C60N04 TECHNICAL MANUAL CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (Oscillation Circuit) 4.2 Oscillation Circuit The S1C60N04 has a CR oscillation circuit. The CR oscillation circuit generates the operating clock for the CPU and the peripheral circuits. The oscillation frequency is 2 MHz (Typ.). Figure 4.2.1 is the circuit diagram of the CR oscillation circuit. OSC1 RCR CPU and peripheral circuits CCR OSC2 Fig. 4.2.1 CR oscillation circuit As shown in Figure 4.2.1, the CR oscillation circuit can be configured simply by connecting the resistor RCR between the OSC1 and OSC2 terminals. See Chapter 6, "Electrical Characteristics" for resistance value of RCR. S1C60N04 TECHNICAL MANUAL EPSON 9 CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (Input Ports) 4.3 Input Ports (K00-K03) 4.3.1 Configuration of input port The S1C60N04 has a 4-bit general-purpose input port. Each of the input port pins (K00-K03) has an internal pull-down resistor. The pull-down resistor can be selected for each bit with the mask option. Figure 4.3.1.1 shows the configuration of input port. VDD Data bus Interrupt request K0x Address VSS Mask option Fig. 4.3.1.1 Configuration of input port Selecting "pull-down resistor enabled" with the mask option allows input from a push button, key matrix, and so forth. When "pull-down resistor disabled" is selected, the port can be used for slide switch input and interfacing with other LSIs. 4.3.2 Interrupt function All four input port bits (K00-K03) provide the interrupt function. The conditions for issuing an interrupt can be set by the software for the four bits. Also, whether to mask the interrupt function can be selected individually for all four bits by the software. Figure 4.3.2.1 shows the configuration of K00-K03. Data bus K0x Noise rejector Address Interrupt factor flag (IK0) Interrupt request Address Interrupt mask register (EIK) Mask option (K00-K03) Address Fig. 4.3.2.1 Input interrupt circuit configuration (K00-K03) The interrupt mask registers (EIK00-EIK03) enable the interrupt mask to be selected individually for K00-K03. An interrupt occurs when the input value which are not masked change and the interrupt factor flag (IK0) is set to 1. 10 EPSON S1C60N04 TECHNICAL MANUAL CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (Input Ports) Input interrupt programming related precautions Port K input Active status Mask register Factor flag set Not set When the content of the mask register is rewritten, while the port K input is in the active status. The input interrupt factor flag is set at . Fig. 4.3.2.2 Input interrupt timing When using an input interrupt, if you rewrite the content of the mask register, when the value of the input terminal which becomes the interrupt input is in the active status (input terminal = high status), the factor flag for input interrupt may be set. For example, a factor flag is set with the timing of shown in Figure 4.3.2.2. However, when clearing the content of the mask register with the input terminal kept in the high status and then setting it, the factor flag of the input interrupt is again set at the timing that has been set. Consequently, when the input terminal is in the active status (high status), do not rewrite the mask register (clearing, then setting the mask register), so that a factor flag will only set at the rising edge in this case. When clearing, then setting the mask register, set the mask register, when the input terminal is not in the active status (low status). 4.3.3 Mask option The contents that can be selected with the input port mask option are as follows: (1) An internal pull-down resistor can be selected for each of the four bits of the input ports (K00-K03). Having selected "pull-down resistor disabled", take care that the input does not float. Select "pulldown resistor enabled" for input ports that are not being used. (2) The input interrupt circuit contains a noise rejection circuit to prevent interrupts form occurring through noise. The mask option enables selection of the noise rejection circuit for each separate pin series. When "use" is selected, a maximum delay of 0.5 msec (fosc = 2 MHz), tolerance is within 5%, occurs from the time an interrupt condition is established until the interrupt factor flag (IK0) is set to 1. S1C60N04 TECHNICAL MANUAL EPSON 11 CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (Input Ports) 4.3.4 I/O memory of input port Table 4.3.4.1 list the input port control bits and their addresses. Table 4.3.4.1 Input port control bits Address Register D3 D2 D1 D0 K03 K02 K01 K00 EIK01 EIK00 0E0H R EIK03 EIK02 0E8H R/W 0 0 0 IK0 0EDH R Name K03 K02 K01 K00 EIK03 EIK02 EIK01 EIK00 0 3 0 3 0 3 IK0 4 1 Initial value at initial reset 2 Not set in the circuit Comment 1 0 Init 1 - 2 High Low - 2 High Low K0 input port data - 2 High Low - 2 High Low 0 Enable Mask Interrupt mask register (K03) 0 Enable Mask Interrupt mask register (K02) 0 Enable Mask Interrupt mask register (K01) 0 Enable Mask Interrupt mask register (K00) - 2 Unused - - - 2 Unused - - - 2 Unused - - 0 Interrupt factor flag (K00-K03) Yes No 3 Always "0" being read 4 Reset (0) immediately after being read K00-K03: Input port data (0E0H) The input data of the input port pins can be read with these registers. When 1 is read: High level When 0 is read: Low level Writing: Invalid The value read is 1 when the pin voltage of the four bits of the input port (K00-K03) goes high (VDD), and 0 when the voltage goes low (VSS). These bits are reading, so writing cannot be done. EIK00-EIK03: Interrupt mask registers (0E8H) Masking the interrupt of the input port pins can be done with these registers. When 1 is written: Enable When 0 is written: Mask Reading: Valid With these registers, masking of the input port bits can be done for each of the four bits. After an initial reset, these registers are all set to 0. IK0: Interrupt factor flag (0EDH*D0) This flag indicates the occurrence of an input interrupt. When 1 is read: Interrupt has occurred When 0 is read: Interrupt has not occurred Writing: Invalid The interrupt factor flag IK0 is associated with K00-K03. From the status of this flag, the software can decide whether an input interrupt has occurred. This flag is reset when the software has read it. Reading of interrupt factor flag is available at EI, but be careful in the following cases. If the interrupt mask register value corresponding to the interrupt factor flag to be read is set to 1, an interrupt request will be generated by the interrupt factor flag set timing, or an interrupt request will not be generated. After an initial reset, this flag is set to 0. 4.3.5 Programming note When modifying the input port from high level to low level with pull-down resistor, a delay will occur at the fall of the waveform due to time constant of the pull-down resistor and input gate capacities. Provide appropriate waiting time in the program when performing input port reading. 12 EPSON S1C60N04 TECHNICAL MANUAL CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (Output Ports) 4.4 Output Ports (R00-R03) 4.4.1 Configuration of output port The S1C60N04 has a 4-bit general output port (R00-R03). Output specification of the output port can be selected in a bit units with the mask option. Two kinds of output specifications are available: complementary output and Pch open drain output. Also, the mask option enables the output ports R00 and R01 to be used as special output ports. Figure 4.4.1.1 shows the configuration of the output port. Data bus VDD Register R0x Complementary Pch open drain Address VSS Mask option Fig. 4.4.1.1 Configuration of output port 4.4.2 Mask option The mask option enables the following output port selection. (1) Output specification of output port The output specifications for the output port (R00-R03) may be either complementary output or Pch open drain output for each bit. However, even when Pch open drain output is selected, a voltage exceeding the source voltage must not be applied to the output port. (2) Special output In addition to the regular DC output, special output can be selected for output ports R00 and R01, as shown in Table 4.4.2.1. Figure 4.4.2.1 shows the structure of output ports R00-R03. Table 4.4.2.1 Special output Data bus Output port R00 R01 Special output FOUT or BUZZER output BUZZER output Register R03 R03 Register R02 R02 BUZZER Register R01 R01 BUZZER Register R00 R00 FOUT Address 0F3H Mask option Fig. 4.4.2.1 Structure of output ports R00-R03 S1C60N04 TECHNICAL MANUAL EPSON 13 CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (Output Ports) FOUT (R00) When output port R00 is set for FOUT output, this port will generate fosc (CPU operating clock frequency) clock. BUZZER, BUZZER (R01, R00) Output ports R01 and R00 may be set to BUZZER output and BUZZER output (BUZZER reverse output), respectively, allowing for direct driving of the piezo-electric buzzer. BUZZER output (R00) may only be set if R01 is set to BUZZER output. In such case, whether ON/OFF of the BUZZER output is done through R00 register or is controlled through R01 simultaneously with BUZZER output is also selected by mask option. The frequency of buzzer output may be selected by software to be either 2 kHz or 4 kHz. 4.4.3 I/O memory of output port Table 4.4.3.1 lists the output port control bits and their addresses. Table 4.4.3.1 Control bits of output port Address Register Comment Name Init 1 1 0 High R03 Low R03 output port data 0 R01 High R02 Low R02 output port data 0 R03 R02 FOUT High Low R01 output port data 0 BUZZER BUZZER R01 0F3H On Buzzer output On/Off control BUZZER Off 0 High R00 Low R00 output port data 0 R/W On FOUT output On/Off control FOUT Off 0 Buzzer inverted output On/Off control On BUZZER Off 0 XBZR 0 2 kHz 4 kHz Buzzer frequency control XBZR 0 0 0 0 3 - 2 - Unused - 0FDH 0 3 - 2 - Unused - R/W R 0 3 - 2 - Unused - 1 Initial value at initial reset 3 Always "0" being read 2 Not set in the circuit 4 Reset (0) immediately after being read D3 D2 D1 D0 R00 R00-R03: Output port data (0F3H) Sets the output data for the output ports. When 1 is written: High output When 0 is written: Low output Reading: Valid The output port pins output the data written to the corresponding registers (R00-R03) without changing it. When 1 is written to the register, the output port pin goes high (VDD), and when 0 is written, the output port pin goes low (VSS). After an initial reset, all the registers are set to 0. R00 (when FOUT is selected): Special output port data (0F3H*D0) Controls the FOUT (fosc clock) output. When 1 is written: Clock output When 0 is written: Low level (DC) output Reading: Valid FOUT output can be controlled by writing data to R00. After an initial reset, this register is set to 0. Figure 4.4.3.1 shows the output waveform for FOUT output. 14 EPSON S1C60N04 TECHNICAL MANUAL CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (Output Ports) R00 register 0 1 FOUT output waveform Fig. 4.4.3.1 FOUT output waveform Note: A hazard may occur when the FOUT signal is turned ON or OFF. R00, R01 (when buzzer output is selected): Special output port data (0F3H*D0, D1) Controls the buzzer output. When 1 is written: Buzzer output When 0 is written: Low level (DC) output Reading: Valid BUZZER and BUZZER output can be controlled by writing data to R00 and R01. When BUZZER output by R01 register control is selected by mask option, BUZZER output and BUZZER output can be controlled simultaneously by writing data to R01 register. After an initial reset, these registers are set to 0. Figure 4.4.3.2 shows the output waveform for buzzer output. R01 (R00) register 0 1 BUZZER output waveform BUZZER output waveform Fig. 4.4.3.2 Buzzer output waveform Note: A hazard may occur when the BUZZER or BUZZER signal is turned ON or OFF. XBZR: Buzzer frequency control (0FDH*D3) Selects the frequency of the buzzer signal. When 1 is written: 2 kHz When 0 is written: 4 kHz Reading: Valid When R00 and R01 port is set to buzzer output, the frequency of the buzzer signal can be selected by this register. When 1 is written to this register, the frequency is set in 2 kHz, and in 4 kHz when 0 is written. After an initial reset, this register is set to 0. 4.4.4 Programming note The buzzer output signal may produce hazards when the output ports R00 and R01 are turned on or off. S1C60N04 TECHNICAL MANUAL EPSON 15 CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (I/O Ports) 4.5 I/O Ports (P00-P03) 4.5.1 Configuration of I/O port Data bus The S1C60N04 has a 4-bit general-purpose I/O port. Figure 4.5.1.1 shows the configuration of the I/O port. The four bits of the I/O port P00-P03 can be set to either input mode or output mode. The mode can be set by writing data to the I/O control register (IOC). Input control Register P0x Address I/O control register (IOC) Address Vss Fig. 4.5.1.1 Configuration of I/O port 4.5.2 I/O control register and I/O mode Input or output mode can be set for the four bits of I/O port P00-P03 by writing data into I/O control register IOC. To set the input mode, 0 is written to the I/O control register. When an I/O port is set to input mode, its impedance becomes high and it works as an input port. However, the input line is pulled down when input data is read. The output mode is set when 1 is written to the I/O control register (IOC). When an I/O port set to output mode works as an output port, it outputs a high signal (VDD) when the port output data is 1, and a low signal (VSS) when the port output data is 0. After an initial reset, the I/O control register is set to 0, and the I/O port enters the input mode. 4.5.3 Mask option The output specification during output mode (IOC = 1) of the I/O port can be set with the mask option for either complementary output or Pch open drain output. This setting can be performed for each bit of the I/O port. However, when Pch open drain output has been selected, voltage in excess of the supply voltage must not be applied to the port. 4.5.4 I/O memory of I/O port Table 4.5.4.1 lists the I/O port control bits and their addresses. Table 4.5.4.1 I/O port control bits Address Register D3 D2 D1 D0 P03 P02 P01 P00 0 IOC 0F6H R/W 0 0 0FCH R 1 Initial value at initial reset 2 Not set in the circuit 16 R/W Name P03 P02 P01 P00 0 3 0 3 0 3 IOC Init 1 1 0 - 2 High Low - 2 High Low P0 I/O port data - 2 High Low 2 - High Low Unused - 2 - - - 2 Unused - - - 2 Unused - - 0 Output Input I/O port I/O control 3 Always "0" being read 4 Reset (0) immediately after being read EPSON Comment S1C60N04 TECHNICAL MANUAL CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (I/O Ports) P00-P03: I/O port data (0F6H) I/O port data can be read and output data can be written through the port. When writing data When 1 is written: High level When 0 is written: Low level When an I/O port is set to the output mode, the written data is output from the I/O port pin unchanged. When 1 is written as the port data, the port pin goes high (VDD), and when 0 is written, the level goes low (VSS). Port data can also be written in the input mode. When reading data When 1 is read: High level When 0 is read: Low level The pin voltage level of the I/O port is read. When the I/O port is in the input mode the voltage level being input to the port pin can be read; in the output mode the output voltage level can be read. When the pin voltage is high (VDD) the port data read is 1, and when the pin voltage is low (VSS) the data is 0. Also, the built-in pull-down resistor functions during reading, so the I/O port pin is pulled down. IOC: I/O control register (0FCH*D0) The input or output I/O port mode can be set with this register. When 1 is written: Output mode When 0 is written: Input mode Reading: Valid The input or output mode of the I/O port is set in units of four bits. For instance, IOC sets the mode for P00-P03. Writing 1 to the I/O control register makes the I/O port enter the output mode, and writing 0, the input mode. After an initial reset, the IOC register is set to 0, so the I/O port is in the input mode. 4.5.5 Programming note When in the input mode, I/O ports are changed from high to low by 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 ports, 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 x C x R C: terminal capacitance 5 pF + parasitic capacitance ? pF R: pull-down resistance 60 k S1C60N04 TECHNICAL MANUAL EPSON 17 CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (LCD Driver) 4.6 LCD Driver (COM0-COM3, SEG0-SEG25) 4.6.1 Configuration of LCD driver The S1C60N04 has four common pins and 26 (SEG0-SEG25) segment pins, so that an LCD with a maximum of 104 (26 x 4) segments can be driven. The power for driving the LCD is generated by the CPU internal circuit, so there is no need to supply power externally. The driving method is 1/4 duty (or 1/3, 1/2 duty by mask option) dynamic drive, adopting the four types of potential (1/3 bias), VDD, VL1, VL2 and VSS. Moreover, the 1/2 bias dynamic drive that uses three types of potential, VDD, VL1 = VL2 and VSS, can be selected by setting the mask option (drive duty can also be selected from 1/4, 1/3 or 1/2). The LCD drive voltages VL1 and VL2 are generated by the power divider inside the IC. However it is necessary to turn the power divider on by writing 1 to the PDON register before starting LCD display. The frame frequency is about 30.5 Hz for 1/4 duty and 1/2 duty, and 40.7 Hz for 1/3 duty (in the case of fosc = 2 MHz), tolerance is within 5%. Figures 4.6.1.1 to 4.6.1.6 show the drive waveform for each duty and bias. Note: "fosc" indicates the oscillation frequency of the oscillation circuit. 18 EPSON S1C60N04 TECHNICAL MANUAL CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (LCD Driver) VDD VL1 VL2 VSS COM0 COM1 LCD lighting status COM0 COM1 COM2 COM3 COM2 SEG0-25 COM3 Off On VDD VL1 VL2 VSS SEG0 -SEG25 Frame frequency Fig. 4.6.1.1 Drive waveform for 1/4 duty (1/3 bias) S1C60N04 TECHNICAL MANUAL EPSON 19 CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (LCD Driver) VDD VL1 VL2 VSS COM0 COM1 LCD lighting status COM0 COM1 COM2 SEG0-25 COM2 Off On COM3 VDD VL1 VL2 VSS SEG0 -SEG25 Frame frequency Fig. 4.6.1.2 Drive waveform for 1/3 duty (1/3 bias) VDD VL1 VL2 VSS COM0 COM1 LCD lighting status COM0 COM1 SEG0-25 COM2 COM3 VDD VL1 VL2 VSS Off On SEG0 -SEG25 Frame frequency Fig. 4.6.1.3 Drive waveform for 1/2 duty (1/3 bias) 20 EPSON S1C60N04 TECHNICAL MANUAL CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (LCD Driver) -VDD -VL1, L2 -VSS COM0 COM1 LCD lighting status COM0 COM1 COM2 COM3 SEG0-25 COM2 Off On COM3 -VDD -VL1, L2 -VSS SEG 0-25 Frame frequency Fig. 4.6.1.4 Drive waveform for 1/4 duty (1/2 bias) S1C60N04 TECHNICAL MANUAL EPSON 21 CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (LCD Driver) -VDD -VL1, L2 -VSS COM0 COM1 LCD lighting status COM0 COM1 COM2 SEG0-25 COM2 Off On COM3 -VDD -VL1, L2 -VSS SEG 0-25 Frame frequency Fig. 4.6.1.5 Drive waveform for 1/3 duty (1/2 bias) -VDD -VL1, L2 -VSS COM0 COM1 LCD lighting status COM0 COM1 SEG0-25 COM2 Off On COM3 -VDD -VL1, L2 -VSS SEG 0-25 Frame frequency Fig. 4.6.1.6 Drive waveform for 1/2 duty (1/2 bias) 22 EPSON S1C60N04 TECHNICAL MANUAL CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (LCD Driver) 4.6.2 Mask option (1) Segment allocation As shown in Figure 4.l.1, the S1C60N04 display data is decided by the data written to the display memory (write-only) at address 090H-0AFH. The address and bits of the display memory can be made to correspond to the segment pins (SEG0- SEG25) in any combination through mask option. This simplifies design by increasing the degree of freedom with which the liquid crystal panel can be designed. Figure 4.6.2.1 shows an example of the relationship between the LCD segments (on the panel) and the display memory in the case of 1/3 duty. Address Common 0 Common 1 Common 2 9A, D0 9B, D1 9B, D0 (a) (f) (e) SEG11 9A, D1 9B, D2 9A, D3 (b) (g) (d) SEG12 9D, D1 9A, D2 9B, D3 (f') (c) (p) Data D3 D2 D1 D0 09AH d c b a 09BH p g f e 09CH d' c' b' a' 09DH p' g' f' e' SEG10 Display data memory allocation Pin address allocation a a' g' g e c c' e' p d SEG10 b' f' b f SEG11 p' d' SEG12 Common 0 Common 1 Common 2 Fig. 4.6.2.1 Segment allocation (2) Drive duty According to the mask option, either 1/4, 1/3 or 1/2 duty can be selected as the LCD drive duty. Table 4.6.2.1 shows the differences in the number of segments according to the selected duty. Table 4.6.2.1 Differences according to selected duty Duty COM used 1/4 COM0-COM3 1/3 COM0-COM2 1/2 COM0-COM1 Max. number of segments Frame frequency * 104 (26 x 4) 30.5 Hz 78 (26 x 3) 40.7 Hz 52 (26 x 2) 30.5 Hz When fOSC = 2 MHz, tolerance is within 5% (3) Output specification The segment pins (SEG0-SEG25) are selected by mask option in pairs for either segment signal output or DC output (VDD and VSS binary output). When DC output is selected, the data corresponding to COM0 of each segment pin is output. When DC output is selected, either complementary output or Pch open drain output can be selected for each pin by mask option. Note: The pin pairs are the combination of SEG (2n) and SEG (2n + 1) (where n is an integer from 0 to 12). (4) Drive bias For the drive bias of the S1C60N04, either 1/3 bias or 1/2 bias can be selected by the mask option. S1C60N04 TECHNICAL MANUAL EPSON 23 CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (LCD Driver) 4.6.3 I/O memory of LCD driver Table 4.6.3.1 shows the control bits of the LCD driver and their addresses. Figure 4.6.3.1 shows the display memory map. Table 4.6.3.1 Control bits of LCD driver Address Register D3 D2 D1 D0 0 0 0 PDON 0FBH R R/W Name 0 3 0 3 0 3 PDON 1 Initial value at initial reset 2 Not set in the circuit Address 0 1 2 Comment Init 1 1 0 Unused - 2 - - - 2 Unused - - - 2 Unused - - 0 LCD power supply on/off control On Off 3 Always "0" being read 4 Reset (0) immediately after being read 3 4 090 5 6 7 8 9 A B C D E F Display memory (Write only) 32 words x 4 bits 0A0 Fig. 4.6.3.1 Display memory map PDON: LCD power supply On/Off control (0FBH*D0) Controls the power supply for LCD display. When 1 is written: LCD power On When 0 is written: LCD power Off Reading: Valid By writing 1 to PDON, the LCD display can work normally. When 0 is written, all the segment and common signals will go to the same voltage level, and the LCD display goes off. This control dose not affect the contents of display memory. After an initial reset, this register is set to 0. Display memory (090H-0AFH) The LCD segments are turned on or off according to this data. When 1 is written: On When 0 is written: Off Reading: Invalid By writing data into the display memory allocated to the LCD segment (on the panel), the segment can be turned on or off. After an initial reset, the contents of the display memory are undefined. 4.6.4 Programming note Because the display memory is for writing only, re-writing the contents with computing instructions (e.g., AND, OR, etc.) which come with read-out operations is not possible. To perform bit operations, a buffer to hold the display data is required on the RAM. 24 EPSON S1C60N04 TECHNICAL MANUAL CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (Clock Timer) 4.7 Clock Timer 4.7.1 Configuration of clock timer The S1C60N04 has a built-in clock timer that uses the oscillation circuit as the clock source. The clock timer is configured as a 7-bit binary counter that counts with a 256 Hz source clock from the divider. The high-order 4 bits of the counter (16 Hz-2 Hz) can be read by the software. Figure 4.7.1.1 is the block diagram of the clock timer. Data bus Oscillation circuit Divider 256 Hz 128 Hz-32 Hz 16 Hz-2 Hz 32 Hz, 8 Hz, 2 Hz Interrupt control Clock timer reset signal Interrupt request Fig. 4.7.1.1 Block diagram of clock timer Normally, this clock timer is used for all kinds of timing purpose, such as clocks. 4.7.2 Interrupt function The clock timer can generate interrupts at the falling edge of the 32 Hz, 8 Hz, and 2 Hz signals. The software can mask any of these interrupt signals. Figure 4.7.2.1 is the timing chart of the clock timer. Address 0E4H Register Frequency bits D0 16 Hz D1 8 Hz D2 4 Hz D3 2 Hz Clock timer timing chart Occurrence of 32 Hz interrupt request Occurrence of 8 Hz interrupt request Occurrence of 2 Hz interrupt request Fig. 4.7.2.1 Timing chart of the clock timer As shown in Figure 4.7.2.1, an interrupt is generated at the falling edge of the 32 Hz, 8 Hz, and 2 Hz signals. At this point, the corresponding interrupt factor flag (IT32, IT8, IT2) is set to 1. The interrupts can be masked individually with the interrupt mask register (EIT32, EIT8, EIT2). However, regardless of the interrupt mask register setting, the interrupt factor flags will be set to 1 at the falling edge of their corresponding signal (e.g. the falling edge of the 2 Hz signal sets the 2 Hz interrupt factor flag to 1). S1C60N04 TECHNICAL MANUAL EPSON 25 CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (Clock Timer) 4.7.3 I/O memory of clock timer Table 4.7.3.1 shows the clock timer control bits and their addresses. Table 4.7.3.1 Control bits of clock timer Address Register D3 D2 D1 TM3 TM2 TM1 0E4H R 0 EIT2 EIT8 0EBH R 0 R/W IT2 IT8 0EFH R 0 TMRST R W 0F9H 1 Initial value at initial reset 2 Not set in the circuit 0 Comment 1 0 Name Init 1 TM3 Clock timer data (2 Hz) - 2 TM0 - 2 TM2 Clock timer data (4 Hz) - 2 TM1 Clock timer data (8 Hz) - 2 TM0 Clock timer data (16 Hz) 0 3 Unused - 2 - - EIT32 EIT2 0 Enable Mask Interrupt mask register (clock timer 2 Hz) EIT8 0 Enable Mask Interrupt mask register (clock timer 8 Hz) EIT32 0 Enable Mask Interrupt mask register (clock timer 32 Hz) 0 3 - 2 Unused - - IT32 IT2 4 0 Interrupt factor flag (clock timer 2 Hz) Yes No IT8 4 0 Interrupt factor flag (clock timer 8 Hz) Yes No IT32 4 0 Interrupt factor flag (clock timer 32 Hz) Yes No 0 3 - 2 - Unused - 0 TMRST3 Reset Reset Clock timer reset - 0 3 - 2 - Unused - R 0 3 - 2 - Unused - 3 Always "0" being read 4 Reset (0) immediately after being read D0 TM0-TM3: Timer data (0E4H) The l6 Hz to 2 Hz timer data of the clock timer can be read from this register. These four bits are readonly, and write operations are invalid. At initial reset, the timer data is initialized to "0H". EIT32, EIT8, EIT2: Interrupt mask registers (0EBH*D0-D2) These registers are used to mask the clock timer interrupt. When 1 is written: Enabled When 0 is written: Masked Reading: Valid The interrupt mask registers (EIT32, EIT8, EIT2) mask the corresponding interrupt frequencies (32 Hz, 8 Hz, 2 Hz). At initial reset, these registers are all set to 0. IT32, IT8, IT2: Interrupt factor flags (0EFH*D0-D2) These flags indicate the status of the clock timer interrupt. When 1 is read: Interrupt has occurred When 0 is read: Interrupt has not occurred Writing: Invalid The interrupt factor flags (IT32, IT8, IT2) correspond to the clock timer interrupts (32 Hz, 8 Hz, 2 Hz). The software can determine from these flags whether there is a clock timer interrupt. However, even if the interrupt is masked, the flags are set to 1 at the falling edge of the signal. These flags can be reset when the register is read by the software. Reading of interrupt factor flags is available at EI, but be careful in the following cases. If the interrupt mask register value corresponding to the interrupt factor flag to be read is set to 1, an interrupt request will be generated by the interrupt factor flag set timing, or an interrupt request will not be generated. Be very careful when interrupt factor flags are in the same address. At initial reset, these flags are set to 0. 26 EPSON S1C60N04 TECHNICAL MANUAL CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (Clock Timer) TMRST: Clock timer reset (0F9H*D2) 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 starts immediately after this. No operation results when 0 is written to TMRST. This bit is write-only, and so is always 0 when read. 4.7.4 Programming notes (1) Note that the frequencies and times differ from the description in this section when the oscillation frequency is not 2 MHz. In the case of S1C60N04, tolerance is within 5%. (2) Reading of interrupt factor flags is available at EI, but be careful in the following cases. If the interrupt mask register value corresponding to the interrupt factor flag to be read is set to 1, an interrupt request will be generated by the interrupt factor flag set timing, or an interrupt request will not be generated. Be very careful when interrupt factor flags are in the same address. S1C60N04 TECHNICAL MANUAL EPSON 27 CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (Interrupt and HALT/SLEEP) 4.8 Interrupt and HALT/SLEEP Interrupt types The S1C60N04 provides the following interrupt settings, each of which is maskable. External interrupt: Internal interrupt: Input port interrupt (one) Timer interrupt (one) To enable interrupts, the interrupt flag must be set to 1 (EI) and the necessary related interrupt mask registers must be set to 1 (enable). When an interrupt occurs, the interrupt flag is automatically reset to 0 (DI) and interrupts after that are inhibited. Figure 4.8.1 shows the configuration of the interrupt circuit. SLEEP cancellation K00 Interrupt vector EIK00 (MSB) K01 EIK01 IK0 : K02 Program counter of CPU (three low-order bits) : EIK02 K03 (LSB) EIK03 IT2 EIT2 IT8 INT (Interrupt request) IT32 EIT32 Interrupt factor flag Interrupt mask register Interrupt flag EIT8 Fig. 4.8.1 Configuration of interrupt circuit 28 EPSON S1C60N04 TECHNICAL MANUAL CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (Interrupt and HALT/SLEEP) HALT and SLEEP modes When the HALT instruction is executed, the CPU stops operating and enters the HALT mode. The oscillation circuit and the peripheral circuits operate in the HALT mode. By an interrupt, the CPU exits the HALT mode and resumes operating. Executing the SLP instruction set the IC in the SLEEP mode that stops operations of the CPU and oscillation circuit. The SLEEP mode will be canceled by an input interrupt request from the input port K00-K03. Consequently, at least one input port (K00, K01, K02 or K03) interrupt must be enabled before shifting to the SLEEP status. When the SLEEP status is canceled by a K0n input interrupt, the CPU waits for oscillation to stabilize then restarts operating. Refer to the "S1C6200/6200A Core CPU Manual" for transition to the HALT/SLEEP status and timing of its cancellation. Figures 4.8.2, 4.8.3 and 4.8.4 show the sequence to enter and cancel the SLEEP mode, respectively. Program counter PC PC+1 PC+2 PC+3 PC+4 USLP (controlled by software command "SLP") CLK K input Interrupt mask register Fig. 4.8.2 Entering SLEEP mode Interrupt service routine Key interrupt vector start address Program counter PC+4 PC+4 Interrupt service routine end address 104H PC+4 PC+5 USLP (controlled by software command "SLP") CLK K input Interrupt mask register Waiting for clock stabilization Execute K-input interrupt service routine Fig. 4.8.3 Wakeup from SLEEP mode by K-input Program counter PC+4 100H 101H 102H 103H USLP (controlled by software command "SLP") CLK RESET input Interrupt mask register Fig. 4.8.4 Wakeup from SLEEP mode by RESET pad S1C60N04 TECHNICAL MANUAL EPSON 29 CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (Interrupt and HALT/SLEEP) 4.8.1 Interrupt factors Table 4.8.1.1 shows the factors that generate interrupt requests. The interrupt factor flags are set to 1 depending on the corresponding interrupt factors. The CPU is interrupted when the following two conditions occur and an interrupt factor flag is set to 1. * The corresponding mask register is 1 (enabled) * The interrupt flag is 1 (EI) The interrupt factor flag is a read-only register, but can be reset to 0 when the register data is read. At initial reset, the interrupt factor flags are reset to 0. Note: Reading of interrupt factor flag is available at EI, but be careful in the following cases. If the interrupt mask register value corresponding to the interrupt factor flag to be read is set to 1, an interrupt request will be generated by the interrupt factor flag set timing, or an interrupt request will not be generated. Be very careful when interrupt factor flags are in the same address. Table 4.8.1.1 Interrupt factors Interrupt factor Clock timer 2 Hz falling edge Clock timer 8 Hz falling edge Clock timer 32 Hz falling edge Input (K00-K03) port rising edge Interrupt factor flag IT2 (0EFH*D2) IT8 (0EFH*D1) IT32 (0EFH*D0) IK0 (0EDH*D0) 4.8.2 Specific masks for interrupt The interrupt factor flags can be masked by the corresponding interrupt mask registers. The interrupt mask registers are read/write registers. The interrupts are enabled when 1 is written to them, and masked (interrupt disabled) when 0 is written to them. At initial reset, the interrupt mask register is set to 0. Table 4.8.2.1 shows the correspondence between interrupt mask registers and interrupt factor flags. Table 4.8.2.1 Interrupt mask registers and interrupt factor flags Interrupt mask register EIT2 (0EBH*D2) EIT8 (0EBH*D1) EIT32 (0EBH*D0) EIK03* (0E8H*D3) EIK02* (0E8H*D2) EIK01* (0E8H*D1) EIK00* (0E8H*D0) Interrupt factor flag IT2 (0EFH*D2) IT8 (0EFH*D1) IT32 (0EFH*D0) IK0 (0EDH*D0) There is an interrupt mask register for each input port pin. 30 EPSON S1C60N04 TECHNICAL MANUAL CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (Interrupt and HALT/SLEEP) 4.8.3 Interrupt vectors When an interrupt request is input to the CPU, the CPU starts interrupt processing. After the program being executed is suspended, interrupt processing is executed in the following order: The address data (value of the program counter) of the program step to be executed next is saved on the stack (RAM). The interrupt request causes the value of the interrupt vector (page 1, 01H-07H) to be loaded into the program counter. The program at the specified address is executed (execution of interrupt processing routine). Note: The processing in steps 1 and 2, above, takes 12 cycles of the CPU system clock. Table 4.8.3.1 Interrupt vector addresses Page 1 Step 00H 01H 04H 05H Interrupt vector Initial reset Clock timer interrupt Input (K00-K03) interrupt Clock timer & Input (K00-K03) interrupt 4.8.4 I/O memory of interrupt Table 4.8.4.1 shows the interrupt control bits and their addresses. Table 4.8.4.1 Control bits of interrupt Address Register D3 D2 D1 D0 EIK03 EIK02 EIK01 EIK00 0E8H R/W 0 EIT2 EIT8 EIT32 0EBH R 0 R/W 0 0 IK0 IT8 IT32 0EDH R 0 IT2 0EFH R 1 Initial value at initial reset 2 Not set in the circuit Comment Name Init 1 1 0 EIK03 0 Enable Mask Interrupt mask register (K03) EIK02 0 Enable Mask Interrupt mask register (K02) EIK01 0 Enable Mask Interrupt mask register (K01) EIK00 0 Enable Mask Interrupt mask register (K00) 0 3 Unused - 2 - - EIT2 0 Enable Mask Interrupt mask register (clock timer 2 Hz) EIT8 0 Enable Mask Interrupt mask register (clock timer 8 Hz) EIT32 0 Enable Mask Interrupt mask register (clock timer 32 Hz) 0 3 - 2 Unused - - 0 3 - 2 Unused - - 0 3 - 2 Unused - - IK0 4 0 Interrupt factor flag (K00-K03) Yes No 0 3 - 2 Unused - - IT2 4 0 Interrupt factor flag (clock timer 2 Hz) Yes No IT8 4 0 Interrupt factor flag (clock timer 8 Hz) Yes No IT32 4 0 Interrupt factor flag (clock timer 32 Hz) Yes No 3 Always "0" being read 4 Reset (0) immediately after being read EIT32, EIT8, EIT2: Interrupt mask registers (0EBH*D0-D2) IT32, IT8, IT2: Interrupt factor flags (0EFH*D0-D2) ...See Section 4.7, "Clock Timer". EIK00-EIK03: Interrupt mask registers (0E8H) IK0: Interrupt factor flag (0EDH*D0) ...See Section 4.3, "Input Ports". S1C60N04 TECHNICAL MANUAL EPSON 31 CHAPTER 4: PERIPHERAL CIRCUITS AND OPERATION (Interrupt and HALT/SLEEP) 4.8.5 Programming notes (1) Restart from the HALT mode is performed by an interrupt. The return address after completion of the interrupt processing will be the address following the HALT instruction. (2) Restart from the SLEEP mode is performed by an input interrupt from the input port (K00-K03). The return address after completion of the interrupt processing will be the address following the SLP instruction. At least one input port interrupt must be enabled before shifting to the SLEEP mode. (3) When an interrupt occurs, the interrupt flag will be reset by the hardware and it will become DI status. After completion of the interrupt processing, set to the EI status through the software as needed. Moreover, the nesting level may be set to be programmable by setting to the EI state at the beginning of the interrupt processing routine. (4) The interrupt factor flags must always be reset before setting the EI status. When the interrupt mask register has been set to 1, the same interrupt will occur again if the EI status is set unless of resetting the interrupt factor flag. (5) The interrupt factor flag will be reset by reading through the software. Because of this, when multiple interrupt factor flags are to be assigned to the same address, perform the flag check after the contents of the address has been stored in the RAM. Direct checking with the FAN instruction will cause all the interrupt factor flag to be reset. (6) Reading of interrupt factor flag is available at EI, but be careful in the following cases. If the interrupt mask register value corresponding to the interrupt factor flag to be read is set to 1, an interrupt request will be generated by the interrupt factor flag set timing, or an interrupt request will not be generated. Be very careful when interrupt factor flags are in the same address. 32 EPSON S1C60N04 TECHNICAL MANUAL CHAPTER 5: BASIC EXTERNAL WIRING DIAGRAM CHAPTER 5 BASIC EXTERNAL WIRING DIAGRAM Piezo Buzzer Single Terminal Driving I COM3 K00 COM0 SEG0 SEG25 LCD PANEL K03 VDD OSC1 RCR P00 I/O P03 OSC2 S1C60N04 [The potential of the substrate RESET (back of the chip) is VDD.] C1 O R01 (BZ) R00 (FOUT) R02 R03 TEST Cp VSS Piezo Buzzer Coil Piezo Buzzer Direct Driving K03 COM3 COM0 I SEG25 K00 SEG0 LCD PANEL VDD OSC1 RCR P00 I/O P03 S1C60N04 OSC2 [The potential of the substrate RESET (back of the chip) is VDD.] C1 R03 R00 (BZ) O R01 (BZ) R02 R1 TEST Cp VSS R2 Piezo Buzzer RCR Resistor 50 k (VSS = -5.0 V), 39 k (VSS = -3.0 V) C1 Capacitor 0.1 F Cp Capacitor 3.3 F R1, R2 Resistor 100 Note: The above table is simply an example, and is not guaranteed to work. S1C60N04 TECHNICAL MANUAL EPSON 33 CHAPTER 6: ELECTRICAL CHARACTERISTICS CHAPTER 6 ELECTRICAL CHARACTERISTICS 6.1 Absolute Maximum Rating (VDD=0V) Item Rated value Unit Symbol Supply voltage -7.0 to 0.5 V VSS Input voltage (1) VI VSS - 0.3 to 0.5 V Input voltage (2) VIOSC VS1 - 0.3 to 0.5 V Permissible total output current 1 IVSS 40 mA Operating temperature Topr -20 to 70 C Storage temperature Tstg -65 to 150 C Soldering temperature / time Tsol 260C, 10sec (lead section) - Permissible dissipation 2 PD 250 mW 1 The permissible total output current is the sum total of the current (average current) that simultaneously flows from the output pin (or is drawn in). 2 In case of plastic package (QFP12-48pin). 6.2 Recommended Operating Conditions Item Supply voltage Oscillation frequency 34 Symbol Condition VSS 3 V system, VDD=0V 5 V system, VDD=0V fOSC CR oscillation, RCR=50k, VSS=-5V EPSON Min. -3.6 -5.5 Typ. -3.0 -5.0 2 (Ta=-20 to 70C) Max. Unit -2.7 V -4.5 V MHz S1C60N04 TECHNICAL MANUAL CHAPTER 6: ELECTRICAL CHARACTERISTICS 6.3 DC Characteristics Unless otherwise specified: VDD=0V, VSS=-5.0V, fosc=2MHz, Ta=25C Item Symbol Condition High level input voltage (1) VIH1 K00-03, P00-03 High level input voltage (2) VIH2 RESET Low level input voltage (1) VIL1 K00-03, P00-03 Low level input voltage (2) VIL2 RESET High level input current (1) IIH1 VIH1=0V, No pull-down K00-03, P00-P03 High level input current (2) IIH2 VIH2=0V, Pull-down K00-03 High level input current (3) IIH3 VIH3=0V, Pull-down P00-03, RESET Low level input current VIL=VSS IIL K00-03, P00-03, RESET, TEST High level output current (1) IOH1 VOH1=0.1*VSS R02, R03, P00-03 High level output current (2) IOH2 VOH2=0.1*VSS R00, R01 (with protection resistor) High level output current (3) IOH3 VOH3=0.1*VSS , VSS=-4.5V R03 Low level output current (1) IOL1 VOL1=0.9*VSS R02, R03, P00-03 Low level output current (2) IOL2 VOL2=0.9*VSS R00, R01 (with protection resistor) Common output current VOH4=-0.05V IOH4 COM0-3 IOL4 VOL4=VSS+0.05V Segment output current IOH5 VOH5=-0.05V SEG0-25 (during LCD output) IOL5 VOL5=VSS+0.05V Segment output current VOH6=0.1*VSS IOH6 SEG0-25 (during DC output) IOL6 VOL6=0.9*VSS Unless otherwise specified: VDD=0V, VSS=-3.0V, fosc=2MHz, Ta=25C Item Condition Symbol High level input voltage (1) VIH1 K00-03, P00-03 High level input voltage (2) VIH2 RESET Low level input voltage (1) VIL1 K00-03, P00-03 Low level input voltage (2) VIL2 RESET High level input current (1) IIH1 VIH1=0V, No pull-down K00-03, P00-P03 High level input current (2) VIH2=0V, Pull-down IIH2 K00-03 High level input current (3) IIH3 P00-03, RESET VIH3=0V, Pull-down Low level input current VIL=VSS IIL K00-03, P00-03, RESET, TEST High level output current (1) IOH1 VOH1=0.1*VSS R02, R03, P00-03 High level output current (2) IOH2 VOH2=0.1*VSS R00, R01 (with protection resistor) High level output current (3) IOH3 VOH3=0.1*VSS , VSS=-2.7V R03 Low level output current (1) IOL1 VOL1=0.9*VSS R02, R03, P00-03 Low level output current (2) IOL2 VOL2=0.9*VSS R00, R01 (with protection resistor) Common output current VOH4=-0.05V IOH4 COM0-3 VOL4=VSS+0.05V IOL4 Segment output current IOH5 VOH5=-0.05V SEG0-25 (during LCD output) VOL5=VSS+0.05V IOL5 Segment output current VOH6=0.1*VSS IOH6 SEG0-25 (during DC output) IOL6 VOL6=0.9*VSS S1C60N04 TECHNICAL MANUAL EPSON Min. 0.2*VSS 0.1*VSS VSS VSS 0 20 50 -0.5 Typ. 40 100 Max. 0 0 0.8*VSS 0.9*VSS 0.5 70 150 0 Unit V V V V A A A A -3.0 -3.0 mA mA -15 mA mA mA -3 A A A A A A 3.0 3.0 3 -3 3 -450 450 Min. 0.2*VSS 0.1*VSS VSS VSS 0 10 30 -0.5 Typ. 25 60 Max. 0 0 0.8*VSS 0.9*VSS 0.5 40 100 0 Unit V V V V A A A A -1.0 -1.0 mA mA -5 mA mA mA -3 A A A A A A 3.0 3.0 3 -3 3 -200 200 35 CHAPTER 6: ELECTRICAL CHARACTERISTICS 6.4 Current Consumption Unless otherwise specified: VDD=0V, fosc=2MHz, Ta=25C Item Symbol Current consumption ISLP2 IHALT2 IHALT4 IEXE2 IEXE4 ISLP1 IHALT1 IHALT3 IEXE1 IEXE3 Condition During SLEEP, LCD off During HALT, LCD off During HALT, LCD on During operation, LCD off During operation, LCD on During SLEEP, LCD off During HALT, LCD off During HALT, LCD on During operation, LCD off During operation, LCD on Min. Vss=-3.0V no panel load RCR=39k Typ. 300 330 420 450 Vss=-5.0V no panel load RCR=50k 950 1000 1050 1100 Max. 100 800 800 1000 1000 100 1500 1500 1800 1800 Unit nA A A A A nA A A A A 6.5 Oscillation Characteristics Oscillation characteristics will vary according to different conditions (elements used, board pattern). Use the following characteristics are as reference values. CR Oscillation Unless otherwise specified: VDD=0V, VSS=-5.0V, RCR=50k, Ta=25C Item Symbol Frequency voltage dispersion f/V1 VSS=-4.5 to -5.5V Frequency IC dispersion f/IC1 VSS=-5V Oscillation start time tsta VSS=-4.5 to -5.5V Unless otherwise specified: VDD=0V, VSS=-3.0V, RCR=39k, Ta=25C Item Symbol Frequency voltage dispersion f/V2 VSS=-2.7 to -3.6V Frequency IC dispersion f/IC2 VSS=-3V Oscillation start time tsta VSS=-2.7 to -3.6V Condition Condition Min. Typ. -20 (2MHz) 3 Min. Typ. -20 (2MHz) 3 Min. (VSS/3) -0.1 Typ. VSS/3 Max. 20 20 Unit % % mS Max. 30 20 Unit % % mS 6.6 LCD Characteristic Unless otherwise specified: VDD=0V, VSS=VL3, Ta=25C Item Symbol Condition Internal voltage VL1 Connect 1 M load resistor between VDD and common pad (without panel load) 36 EPSON Max. Unit (VSS/3) V x0.9 S1C60N04 TECHNICAL MANUAL CHAPTER 7: PACKAGE CHAPTER 7 PACKAGE 7.1 Plastic Package QFP12-48pin (Unit: mm) 90.4 70.1 36 25 70.1 90.4 24 37 INDEX 13 48 1 12 +0.1 0.18 -0.05 0.1 1.40.1 1.7max 0.5 0.1250.05 0 10 0.50.2 1 S1C60N04 TECHNICAL MANUAL EPSON 37 CHAPTER 7: PACKAGE 7.2 Ceramic Package for Test Samples (Unit: mm) 81.3 PIN NO. 1 2 23.1 34 33 22.8 64 63 31 32 INDEX MARK 2.54 78.7 No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 38 Pin name SEG5 SEG4 SEG3 SEG2 SEG1 SEG0 N.C. N.C. N.C. N.C. N.C. COM0 COM1 COM2 COM3 TEST No. 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 Pin name RESET VDD OSC1 OSC2 VSS K03 N.C. N.C. N.C. N.C. N.C. K02 K01 K00 P03 P02 No. 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 Pin name No. Pin name P01 49 SEG18 P00 50 SEG17 R03 51 SEG16 R02 52 SEG15 R01 53 SEG14 R00 54 SEG13 N.C. 55 SEG12 N.C. 56 N.C. N.C. 57 N.C. SEG25 58 N.C. SEG24 59 SEG11 SEG23 60 SEG10 SEG22 61 SEG9 SEG21 62 SEG8 SEG20 63 SEG7 SEG19 64 SEG6 N.C. = No Connection EPSON S1C60N04 TECHNICAL MANUAL CHAPTER 8: PAD LAYOUT CHAPTER 8 PAD LAYOUT 8.1 Diagram of Pad Layout Die No. 10 5 1 48 15 45 20 (0, 0) 2.44 mm Y X 40 25 30 35 2.79 mm 8.2 Pad Coordinates No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Pad name SEG25 SEG24 SEG23 SEG22 SEG21 SEG20 SEG19 SEG18 SEG17 SEG16 SEG15 SEG14 SEG13 SEG12 SEG11 SEG10 X 885 755 625 495 365 211 82 -48 -178 -308 -438 -568 -698 -828 -1226 -1226 S1C60N04 TECHNICAL MANUAL Y 1053 1053 1053 1053 1053 1053 1053 1053 1053 1053 1053 1053 1053 1053 670 540 No. 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 Pad name SEG9 SEG8 SEG7 SEG6 SEG5 SEG4 SEG3 SEG2 SEG1 SEG0 COM0 COM1 COM2 COM3 TEST RESET X -1226 -1226 -1226 -1226 -1226 -1226 -1226 -1226 -1226 -1226 -1054 -924 -794 -664 -14 116 EPSON Y 410 280 150 20 -109 -240 -370 -500 -630 -760 -1053 -1053 -1053 -1053 -1053 -1053 No. 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 Pad name VDD OSC1 OSC2 VSS K03 K02 K01 K00 P03 P02 P01 P00 R03 R02 R01 R00 Unit: m X Y 667 -1053 797 -1053 927 -1053 1057 -1053 1187 -1053 1226 -776 1226 -646 1226 -516 1226 -67 1226 63 1226 193 1226 323 1226 469 1226 603 1226 742 1226 960 39 CHAPTER 9: PRECAUTIONS ON MOUNTING CHAPTER 9 PRECAUTIONS ON MOUNTING <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 recommended 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 and OSC2 terminals, such as oscillators, resistors and capacitors, should be connected in the shortest line. Sample VDD pattern OSC1 (2) As shown in the right hand figure, make a VDD pattern as large as possible at circumscription of the OSC1 and OSC2 terminals and the components connected to these terminals. Furthermore, do not use this VDD pattern for any purpose other than the oscillation system. OSC2 VDD In order to prevent unstable operation of the oscillation circuit due to current leak between OSC1 and VSS, please keep enough distance between OSC1 and VSS or other signals on the board pattern. <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 the built-in pull-down resistor of the RESET 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 terminal 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. Bypass capacitor connection example 40 VDD VDD VSS VSS EPSON S1C60N04 TECHNICAL MANUAL CHAPTER 9: PRECAUTIONS ON MOUNTING <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. 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. Prohibited pattern OSC1 OSC2 Large current signal line High-speed signal line <Precautions for Visible Radiation (when bare chip is mounted)> Visible radiation causes semiconductor devices to change the electrical characteristics. It may cause this IC to malfunction. When developing products which use this IC, consider the following precautions to prevent malfunctions caused by visible radiations. (1) Design the product and implement 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) As well as the face of the IC, shield the back and side too. S1C60N04 TECHNICAL MANUAL EPSON 41 International Sales Operations AMERICA ASIA EPSON ELECTRONICS AMERICA, INC. EPSON (CHINA) CO., LTD. - HEADQUARTERS - 28F, Beijing Silver Tower 2# North RD DongSanHuan ChaoYang District, Beijing, CHINA Phone: 64106655 Fax: 64107319 1960 E. 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S1C60N04 Technical Manual ELECTRONIC DEVICES MARKETING DIVISION EPSON Electronic Devices Website http://www.epson.co.jp/device/ First issue September, 1998 Printed February, 2001 in Japan M A