SAB-C161K-LMHA - Infineon Technologies AG

Never stop thinking.

Microcontrollers

Data Sheet, V2.0, Jan. 2001

C161K

C161O

16-Bit Single-Chip Microcontroller

Edition 2001-01

Published by Infineon Technologies AG,

St.-Martin-Strasse 53,

D-81541 München, Germany

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Microcontrollers

Data Sheet, V2.0, Jan. 2001

Never stop thinking.

C161K

C161O

16-Bit Single-Chip Microcontroller

C161K/O
 
Revision History: 2001-01 V2.0
Previous Version: 03.97 (Preliminary)
09.96 (Advance Information)
Page Subjects (major changes since last revision)
All Converted to Infineon layout
All C161V removed
2Ordering Codes and Cross-Reference replaced with Derivative Synopsis
5 - 8Open drain functionality described for P2, P3, P6
8Bidirectional reset introduced
19 Figure updated
28, 29 Revised description of Absolute Max. Ratings and Operating Conditions
32 - 56 Specifications for reduced supply voltage introduced
35 Reduced power consumption
36, 37 Clock Generation Modes added
38, 39 Description of External Clock Drive improved
41 - 56 Standard 25-MHz timing introduced (timing granularity 2 ns)
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Data Sheet 1 V2.0, 2001-01

C161K/O16-Bit Single-Chip Microcontroller

C166 Family

C161K/O

• High Performance 16-bit CPU with 4-Stage Pipeline

– 80 ns Instruction Cycle Time at 25 MHz CPU Clock

– 400 ns Multiplication (16 × 16 bit), 800 ns Division (32 / 16 bit)

– Enhanced Boolean Bit Manipulation Facilities

– Additional Instructions to Support HLL and Operating Systems

– Register-Based Design with Multiple Variable Register Banks

– Single-Cycle Context Switching Support

– 16 MBytes Total Linear Address Space for Code and Data

– 1024 Bytes On-Chip Special Function Register Area

• 16-Priority-Level Interrupt System with 20 Sources, Sample-Rate down to 40 ns

• 8-Channel Interrupt-Driven Single-Cycle Data Transfer Facilities via

Peripheral Event Controller (PEC)

• Clock Generation via prescaler or via direct clock input

• On-Chip Memory Modules

– 2 KBytes On-Chip Internal RAM (IRAM) on C161O,

1 KByte IRAM on C161K

• On-Chip Peripheral Modules

– Two Multi-Functional General Purpose Timer Units with 5 Timers on C161O,

one Timer Unit with 3 Timers on C161K

– Two Serial Channels (Synchronous/Asynchronous and High-Speed-Synchronous)

• Up to 4 MBytes External Address Space for Code and Data

– Programmable External Bus Characteristics for Different Address Ranges

– Multiplexed or Demultiplexed External Address/Data Buses with 8-Bit or 16-Bit

Data Bus Width

– Four Programmable Chip-Select Signals on C161O,

two Chip-Select Signals on C161K

• Idle and Power Down Modes

• Programmable Watchdog Timer

• Up to 63 General Purpose I/O Lines

• Power Supply: the C161K/O can operate from a 5 V or a 3 V power supply

• Supported by a Large Range of Development Tools like C-Compilers,

Macro-Assembler Packages, Emulators, Evaluation Boards, HLL-Debuggers,

Simulators, Logic Analyzer Disassemblers, Programming Boards

• On-Chip Bootstrap Loader

• 80-Pin MQFP Package (0.65 mm pitch)

C161K

C161O

Data Sheet 2 V2.0, 2001-01

This document describes several derivatives of the C161 group. Table 1 enumerates

these derivatives and summarizes the differences. As this document refers to all of these

derivatives, some descriptions may not apply to a specific product.

For simplicity all versions are referred to by the term C161K/O throughout this document.

Ordering Information

The ordering code for Infineon microcontrollers provides an exact reference to the

required product. This ordering code identifies:

•the derivative itself, i.e. its function set, the temperature range, and the supply voltage

•the package and the type of delivery.

For the available ordering codes for the C161K/O please refer to the “Product Catalog

Microcontrollers”, which summarizes all available microcontroller variants.

Note: The ordering codes for Mask-ROM versions are defined for each product after

verification of the respective ROM code.

Table 1 C161K/O Derivative Synopsis

Derivative1)

1) This Data Sheet is valid for devices starting with and including design step HA.

Max. Oper.

Frequency

Operating

Voltage

IRAM

[KB]

Nr of

CSs

Ext.

Intr.

CAP

SAF-C161K-LM 20 MHz 4.5 to 5.5 V124---

SAB-C161K-LM 20 MHz 4.5 to 5.5 V 124---

SAF-C161K-L25M 25 MHz 4.5 to 5.5 V124---

SAB-C161K-L25M 25 MHz 4.5 to 5.5 V 124---

SAF-C161K-LM3V 20 MHz 3.0 to 3.6 V124---

SAB-C161K-LM3V 20 MHz 3.0 to 3.6 V 124---

SAF-C161O-LM 20 MHz 4.5 to 5.5 V247Yes

SAB-C161O-LM 20 MHz 4.5 to 5.5 V 247Yes

SAF-C161O-L25M 25 MHz 4.5 to 5.5 V247Yes

SAB-C161O-L25M 25 MHz 4.5 to 5.5 V 247Yes

SAF-C161O-LM3V 20 MHz 3.0 to 3.6 V247Yes

SAB-C161O-LM3V 20 MHz 3.0 to 3.6 V 247Yes

C161K

C161O

Data Sheet 3 V2.0, 2001-01

Introduction

The C161K/O is a derivative of the Infineon C166 Family of full featured single-chip

CMOS microcontrollers. It combines high CPU performance (up to 12.5 million

instructions per second) with peripheral functionality and enhanced IO-capabilities. The

C161K/O is especially suited for cost sensitive applications.

Figure 1 Logic Symbol

MCL02949

XTAL1

XTAL2

ALE

RSTIN

C161

Port 0

16 Bit

RSTOUT

NMI

WR/WRL

16 Bit

Port 1

7 Bit

Port 2

12 Bit

Port 3

6 Bit

Port 4

4 Bit

Port 6

Port 5

2 Bit

C161K

C161O

Data Sheet 4 V2.0, 2001-01

Pin Configuration MQFP Package

(top view)

Figure 2

Note: The marked signals are only available in the C161O.

Please also refer to the detailed description below (shaded lines).

MCP04858

60 P1H.5/A13

VSS

XTAL1

C161K/O

P5.15/T2EUD

P4.4/A20 23

P4.5/A21 24

WR/WRL 26

ALE 27

P0L.0/AD0 29

P0L.1/AD1 30

P0L.2/AD2

P0L.3/AD3 32

P0L.4/AD4 33

P0L.5/AD5

P0L.6/AD6 35

P0L.7/AD7 36

P0H.0/AD8 39

P0H.1/AD9

P5.14/T4EUD

78 P2.15/EX7IN

77 P2.14/EX6IN

P2.13/EX5IN

75 P2.12/EX4IN

74 P2.11/EX3IN

P2.10/EX2IN

72 P2.9/EX1IN

71 P6.3/CS3

P6.2/CS2

69 P6.1/CS1

68 P6.0/CS0

NMI

66 RSTOUT

65 RSTIN

62 P1H.7/A15

P1H.6/A14

59 P1H.4/A12

P1H.3/A1158

P1H.2/A1057

56 P1H.1/A9

P1H.0/A855

P1L.7/A754

53 P1L.6/A6

P1L.5/A552

P1L.4/A451

50 P1L.3/A3

P1L.2/A249

P1L.1/A148

47 P1L.0/A0

P0H.7/AD1546

P0H.6/AD1445

P0H.3/AD1142

41 P0H.2/AD10

XTAL2

VDD

P3.2/CAPIN

P3.3/T3OUT

P3.4/T3EUD

P3.5/T4IN

P3.6/T3IN

P3.7/T2IN

P3.8/MRST

P3.9/MTSR

P3.10/TxD0

P3.11/RxD0

P3.12/BHE/WRH

P3.13/SCLK

P4.0/A16

P4.1/A17

P4.2/A18

P4.3/A19

P0H.4/AD12

P0H.5/AD13

C161K

C161O

Data Sheet 5 V2.0, 2001-01

Table 2 Pin Definitions and Functions

Symbol Pin

Num

Input

Outp.

Function

XTAL1

XTAL2

XTAL1: Input to the oscillator amplifier and input

to the internal clock generator

XTAL2: Output of the oscillator amplifier circuit.

To clock the device from an external source, drive XTAL1,

while leaving XTAL2 unconnected. Minimum and maximum

high/low and rise/fall times specified in the AC

Characteristics must be observed.

P3 IO Port 3 is a 12-bit bidirectional I/O port. It is bit-wise

programmable for input or output via direction bits. For a pin

configured as input, the output driver is put into high-

impedance state. Port 3 outputs can be configured as push/

pull or open drain drivers. The Port 3 pins serve for following

alternate functions:

P3.2 5 I CAPIN GPT2 Register CAPREL Capture Input

This alternate input is only available in the C161O.

P3.3

P3.4

P3.5

P3.6

P3.7

P3.8

P3.9

P3.10

P3.11

P3.12

P3.13

I/O

T3OUT GPT1 Timer T3 Toggle Latch Output

T3EUD GPT1 Timer T3 External Up/Down Control Input

T4IN GPT1 Timer T4 Count/Gate/Reload/Capture Inp

T3IN GPT1 Timer T3 Count/Gate Input

T2IN GPT1 Timer T2 Count/Gate/Reload/Capture Inp

MRST SSC Master-Receive/Slave-Transmit Inp./Outp.

MTSR SSC Master-Transmit/Slave-Receive Outp./Inp.

TxD0 ASC0 Clock/Data Output (Async./Sync.)

RxD0 ASC0 Data Input (Async.) or Inp./Outp. (Sync.)

BHE External Memory High Byte Enable Signal,

WRH External Memory High Byte Write Strobe

SCLK SSC Master Clock Output / Slave Clock Input

P4.0

P4.1

P4.2

P4.3

P4.4

P4.5

Port 4 is a 6-bit bidirectional I/O port. It is bit-wise

programmable for input or output via direction bits. For a pin

configured as input, the output driver is put into high-

impedance state. Port 4 can be used to output the segment

address lines:

A16 Least Significant Segment Address Line

A17 Segment Address Line

A18 Segment Address Line

A19 Segment Address Line

A20 Segment Address Line

A21 Most Significant Segment Address Line

C161K

C161O

Data Sheet 6 V2.0, 2001-01

RD 25 O External Memory Read Strobe. RD is activated for every

external instruction or data read access.

WR/

WRL

26 O External Memory Write Strobe. In WR-mode this pin is

activated for every external data write access. In WRL-mode

this pin is activated for low byte data write accesses on a 16-

bit bus, and for every data write access on an 8-bit bus. See

WRCFG in register SYSCON for mode selection.

ALE 27 O Address Latch Enable Output. Can be used for latching the

address into external memory or an address latch in the

multiplexed bus modes.

EA 28 I External Access Enable pin. A low level at this pin during and

after Reset forces the C161K/O to begin instruction

execution out of external memory. A high level forces

execution out of the internal program memory.

“ROMless” versions must have this pin tied to ‘0’.

PORT0

P0L.0-7

P0H.0-7

29-36

39-46

IO PORT0 consists of the two 8-bit bidirectional I/O ports P0L

and P0H. It is bit-wise programmable for input or output via

direction bits. For a pin configured as input, the output driver

is put into high-impedance state. In case of an external bus

configuration, PORT0 serves as the address (A) and

address/data (AD) bus in multiplexed bus modes and as the

data (D) bus in demultiplexed bus modes.

Demultiplexed bus modes:

Data Path Width: 8-bit 16-bit

P0L.0 – P0L.7: D0 – D7 D0 – D7

P0H.0 – P0H.7: I/O D8 – D15

Multiplexed bus modes:

Data Path Width: 8-bit 16-bit

P0L.0 – P0L.7: AD0 – AD7 AD0 – AD7

P0H.0 – P0H.7: A8 – A15 AD8 – AD15

PORT1

P1L.0-7

P1H.0-7

47-54

55-62

IO PORT1 consists of the two 8-bit bidirectional I/O ports P1L

and P1H. It is bit-wise programmable for input or output via

direction bits. For a pin configured as input, the output driver

is put into high-impedance state. PORT1 is used as the 16-

bit address bus (A) in demultiplexed bus modes and also

after switching from a demultiplexed bus mode to a

multiplexed bus mode.

Table 2 Pin Definitions and Functions (cont’d)

Symbol Pin

Num

Input

Outp.

Function

C161K

C161O

Data Sheet 7 V2.0, 2001-01

RSTIN 65 I/O Reset Input with Schmitt-Trigger characteristics. A low level

at this pin while the oscillator is running resets the C161K/O.

An internal pullup resistor permits power-on reset using only

a capacitor connected to VSS. A spike filter suppresses input

pulses < 10 ns. Input pulses >100 ns safely pass the filter.

The minimum duration for a safe recognition should be

100 ns + 2 CPU clock cycles.

In bidirectional reset mode (enabled by setting bit BDRSTEN

in register SYSCON) the RSTIN line is internally pulled low

for the duration of the internal reset sequence upon any reset

(HW, SW, WDT). See note below this table.

Note: To let the reset configuration of PORT0 settle a reset

duration of ca. 1 ms is recommended.

RST

OUT

66 O Internal Reset Indication Output. This pin is set to a low level

when the part is executing either a hardware-, a software- or

a watchdog timer reset. RSTOUT remains low until the EINIT

(end of initialization) instruction is executed.

NMI 67 I Non-Maskable Interrupt Input. A high to low transition at this

pin causes the CPU to vector to the NMI trap routine. When

the PWRDN (power down) instruction is executed, the NMI

pin must be low in order to force the C161K/O to go into

power down mode. If NMI is high, when PWRDN is

executed, the part will continue to run in normal mode.

If not used, pin NMI should be pulled high externally.

P6.0

P6.1

P6.2

P6.3

Port 6 is a 4-bit bidirectional I/O port. It is bit-wise

programmable for input or output via direction bits. For a pin

configured as input, the output driver is put into high-

impedance state. Port 6 outputs can be configured as push/

pull or open drain drivers.

The Port 6 pins also serve for alternate functions:

CS0 Chip Select 0 Output

CS1 Chip Select 1 Output

CS2 Chip Select 2 Output

CS3 Chip Select 3 Output

These chip select outputs are only available in the C161O.

Table 2 Pin Definitions and Functions (cont’d)

Symbol Pin

Num

Input

Outp.

Function

C161K

C161O

Data Sheet 8 V2.0, 2001-01

Note: The following behavioral differences must be observed when the bidirectional

reset is active:

•Bit BDRSTEN in register SYSCON cannot be changed after EINIT and is cleared

automatically after a reset.

•The reset indication flags always indicate a long hardware reset.

•The PORT0 configuration is treated like on a hardware reset. Especially the bootstrap

loader may be activated when P0L.4 is low.

•Pin RSTIN may only be connected to external reset devices with an open drain output

driver.

•A short hardware reset is extended to the duration of the internal reset sequence.

P2.9

P2.10

P2.11

P2.12

Port 2 is a 7-bit bidirectional I/O port. It is bit-wise

programmable for input or output via direction bits. For a pin

configured as input, the output driver is put into high-

impedance state. Port 2 outputs can be configured as push/

pull or open drain drivers. The following Port 2 pins serve for

alternate functions:

EX1IN Fast External Interrupt 1 Input

EX2IN Fast External Interrupt 2 Input

EX3IN Fast External Interrupt 3 Input

EX4IN Fast External Interrupt 4 Input

EX5IN Fast External Interrupt 5 Input

EX6IN Fast External Interrupt 6 Input

EX7IN Fast External Interrupt 7 Input

These external interrupts are only available in the C161O.

P5.14

P5.15

Port 5 is a 2-bit input-only port with Schmitt-Trigger char. The

pins of Port 5 also serve as timer inputs:

T4EUD GPT1 Timer T4 External Up/Down Control Input

T2EUD GPT1 Timer T2 External Up/Down Control Input

VDD 4, 22,

37, 64

–Digital Supply Voltage:

+ 5 V or + 3 V during normal operation and idle mode.

≥ 2.5 V during power down mode.

VSS 1, 21,

38, 63

–Digital Ground.

Table 2 Pin Definitions and Functions (cont’d)

Symbol Pin

Num

Input

Outp.

Function

C161K

C161O

Data Sheet 9 V2.0, 2001-01

Functional Description

The architecture of the C161K/O combines advantages of both RISC and CISC

processors and of advanced peripheral subsystems in a very well-balanced way. In

addition the on-chip memory blocks allow the design of compact systems with maximum

performance.

The following block diagram gives an overview of the different on-chip components and

of the advanced, high bandwidth internal bus structure of the C161K/O.

Note: All time specifications refer to a CPU clock of 25 MHz

(see definition in the AC Characteristics section).

Figure 3 Block Diagram

The program memory, the internal RAM (IRAM) and the set of generic peripherals are

connected to the CPU via separate buses. A fourth bus, the XBUS, connects external

resources as well as additional on-chip resources, the X-Peripherals (see Figure 3).

C166-Core

MCB04323_1ko

CPU

Port 2

Interrupt Bus

XTAL

Osc

WDT

Interrupt Controller 16-Level

Priority

PEC

External Instr. / Data

GPT1

SSC

BRGen

(SPI)

ASC0

BRGen

(USART)

EBC

XBUS Control

External Bus

Control

IRAM

Dual Port

Internal

RAM

1/2 Kbyte

ProgMem

Internal

ROM

Area

Data

Port 0

Port 6

Port 1

16 6

Port 5Port 3

Port 4

Instr. / Data

On-Chip XBUS (16-Bit Demux)

Peripheral Data Bus

GPT2

C161K

C161O

Data Sheet 10 V2.0, 2001-01

Memory Organization

The memory space of the C161K/O is configured in a Von Neumann architecture which

means that code memory, data memory, registers and I/O ports are organized within the

same linear address space which includes 16 MBytes. The entire memory space can be

accessed bytewise or wordwise. Particular portions of the on-chip memory have

additionally been made directly bitaddressable.

The C161K/O is prepared to incorporate on-chip program memory (not in the ROM-less

derivatives, of course) for code or constant data. The internal ROM area can be mapped

either to segment 0 or segment 1.

On-chip Internal RAM (IRAM) is provided (1 KByte in the C161K, 2 KBytes in the

C161O) as a storage for user defined variables, for the system stack, general purpose

to R15) and/or bytewide (RL0, RH0, …, RL7, RH7) so-called General Purpose Registers

(GPRs).

1024 bytes (2 ×512 bytes) of the address space are reserved for the Special Function

used for controlling and monitoring functions of the different on-chip units. Unused SFR

addresses are reserved for future members of the C166 Family.

In order to meet the needs of designs where more memory is required than is provided

on chip, up to 4 MBytes of external RAM and/or ROM can be connected to the

microcontroller.

C161K

C161O

Data Sheet 11 V2.0, 2001-01

External Bus Controller

All of the external memory accesses are performed by a particular on-chip External Bus

Controller (EBC). It can be programmed either to Single Chip Mode when no external

memory is required, or to one of four different external memory access modes, which are

as follows:

–16-/18-/20-/22-bit Addresses, 16-bit Data, Demultiplexed

–16-/18-/20-/22-bit Addresses, 16-bit Data, Multiplexed

–16-/18-/20-/22-bit Addresses, 8-bit Data, Multiplexed

–16-/18-/20-/22-bit Addresses, 8-bit Data, Demultiplexed

In the demultiplexed bus modes, addresses are output on PORT1 and data is input/

output on PORT0 or P0L, respectively. In the multiplexed bus modes both addresses

and data use PORT0 for input/output.

Important timing characteristics of the external bus interface (Memory Cycle Time,

Memory Tri-State Time, Length of ALE and Read Write Delay) have been made

programmable to allow the user the adaption of a wide range of different types of

memories and external peripherals.

In addition, up to 4 independent address windows may be defined (via register pairs

ADDRSELx / BUSCONx) which control the access to different resources with different

bus characteristics. These address windows are arranged hierarchically where

BUSCON4 overrides BUSCON3 and BUSCON2 overrides BUSCON1. All accesses to

locations not covered by these 4 address windows are controlled by BUSCON0.

Up to 2 or 4 external CS signals (1 or 3 windows plus default, depending on the device)

can be generated in order to save external glue logic. The C161K/O offers the possibility

to switch the CS outputs to an unlatched mode. In this mode the internal filter logic is

switched off and the CS signals are directly generated from the address. The unlatched

CS mode is enabled by setting CSCFG (SYSCON.6).

For applications which require less than 4 MBytes of external memory space, this

address space can be restricted to 1 MByte, 256 KByte, or to 64 KByte. In this case

Port 4 outputs four, two, or no address lines at all. It outputs all 6 address lines, if an

address space of 4 MBytes is used.

C161K

C161O

Data Sheet 12 V2.0, 2001-01

Central Processing Unit (CPU)

The main core of the CPU consists of a 4-stage instruction pipeline, a 16-bit arithmetic

and logic unit (ALU) and dedicated SFRs. Additional hardware has been spent for a

separate multiply and divide unit, a bit-mask generator and a barrel shifter.

Based on these hardware provisions, most of the C161K/O’s instructions can be

executed in just one machine cycle which requires 80 ns at 25 MHz CPU clock. For

example, shift and rotate instructions are always processed during one machine cycle

independent of the number of bits to be shifted. All multiple-cycle instructions have been

optimized so that they can be executed very fast as well: branches in 2 cycles, a 16 ×16

bit multiplication in 5 cycles and a 32-/16 bit division in 10 cycles. Another pipeline

optimization, the so-called ‘Jump Cache’, allows reducing the execution time of

repeatedly performed jumps in a loop from 2 cycles to 1 cycle.

Figure 4 CPU Block Diagram

MCB02147

CPU

STKOV

STKUN

Instr. Reg.

Instr. Ptr.

Exec. Unit

4-Stage

Pipeline

MDH

MDL

PSW

SYSCON Context Ptr.

Mul/Div-HW

R15

General

Purpose

Registers

Bit-Mask Gen

Barrel - Shifter

ALU

(16-bit)

Data Page Ptr. Code Seg. Ptr.

Internal

RAM

R15

ROM

BUSCON 0

BUSCON 1

BUSCON 2

BUSCON 3

BUSCON 4 ADDRSEL 4

ADDRSEL 3

ADDRSEL 2

ADDRSEL 1

C161K

C161O

Data Sheet 13 V2.0, 2001-01

The CPU has a register context consisting of up to 16 wordwide GPRs at its disposal.

These 16 GPRs are physically allocated within the on-chip RAM area. A Context Pointer

(CP) register determines the base address of the active register bank to be accessed by

the CPU at any time. The number of register banks is only restricted by the available

internal RAM space. For easy parameter passing, a register bank may overlap others.

A system stack of up to 1024 words is provided as a storage for temporary data. The

system stack is allocated in the on-chip RAM area, and it is accessed by the CPU via the

stack pointer (SP) register. Two separate SFRs, STKOV and STKUN, are implicitly

compared against the stack pointer value upon each stack access for the detection of a

stack overflow or underflow.

The high performance offered by the hardware implementation of the CPU can efficiently

be utilized by a programmer via the highly efficient C161K/O instruction set which

includes the following instruction classes:

–Arithmetic Instructions

–Logical Instructions

–Boolean Bit Manipulation Instructions

–Compare and Loop Control Instructions

–Shift and Rotate Instructions

–Prioritize Instruction

–Data Movement Instructions

–System Stack Instructions

–Jump and Call Instructions

–Return Instructions

–System Control Instructions

–Miscellaneous Instructions

The basic instruction length is either 2 or 4 bytes. Possible operand types are bits, bytes

and words. A variety of direct, indirect or immediate addressing modes are provided to

specify the required operands.

C161K

C161O

Data Sheet 14 V2.0, 2001-01

Interrupt System

With an interrupt response time within a range from just 5 to 12 CPU clocks (in case of

internal program execution), the C161K/O is capable of reacting very fast to the

occurrence of non-deterministic events.

The architecture of the C161K/O supports several mechanisms for fast and flexible

response to service requests that can be generated from various sources internal or

external to the microcontroller. Any of these interrupt requests can be programmed to

being serviced by the Interrupt Controller or by the Peripheral Event Controller (PEC).

In contrast to a standard interrupt service where the current program execution is

suspended and a branch to the interrupt vector table is performed, just one cycle is

‘stolen’ from the current CPU activity to perform a PEC service. A PEC service implies a

single byte or word data transfer between any two memory locations with an additional

increment of either the PEC source or the destination pointer. An individual PEC transfer

counter is implicity decremented for each PEC service except when performing in the

continuous transfer mode. When this counter reaches zero, a standard interrupt is

performed to the corresponding source related vector location. PEC services are very

well suited, for example, for supporting the transmission or reception of blocks of data.

The C161K/O has 8 PEC channels each of which offers such fast interrupt-driven data

transfer capabilities.

A separate control register which contains an interrupt request flag, an interrupt enable

flag and an interrupt priority bitfield exists for each of the possible interrupt sources. Via

its related register, each source can be programmed to one of sixteen interrupt priority

levels. Once having been accepted by the CPU, an interrupt service can only be

interrupted by a higher prioritized service request. For the standard interrupt processing,

each of the possible interrupt sources has a dedicated vector location.

Fast external interrupt inputs are provided to service external interrupts with high

precision requirements. These fast interrupt inputs feature programmable edge

detection (rising edge, falling edge or both edges).

Software interrupts are supported by means of the ‘TRAP’ instruction in combination with

an individual trap (interrupt) number.

Table 3 shows all of the possible C161K/O interrupt sources and the corresponding

hardware-related interrupt flags, vectors, vector locations and trap (interrupt) numbers.

Note: Interrupt nodes which are not used by associated peripherals, may be used to

generate software controlled interrupt requests by setting the respective interrupt

request bit (xIR).

C161K

C161O

Data Sheet 15 V2.0, 2001-01

Note: The shaded interrupt nodes are only available in the C161O, not in the C161K.

Table 3 C161K/O Interrupt Nodes

Source of Interrupt or

PEC Service Request

Request

Flag

Enable

Flag

Interrupt

Vector

Location

Trap

Number

External Interrupt 1 CC9IR CC9IE CC9INT 00’0064H19H

External Interrupt 2 CC10IR CC10IE CC10INT 00’0068H1AH

External Interrupt 3 CC11IR CC11IE CC11INT 00’006CH1BH

External Interrupt 4 CC12IR CC12IE CC12INT 00’0070H1CH

External Interrupt 5 CC13IR CC13IE CC13INT 00’0074H1DH

External Interrupt 6 CC14IR CC14IE CC14INT 00’0078H1EH

External Interrupt 7 CC15IR CC15IE CC15INT 00’007CH1FH

GPT1 Timer 2 T2IR T2IE T2INT 00’0088H22H

GPT1 Timer 3 T3IR T3IE T3INT 00’008CH23H

GPT1 Timer 4 T4IR T4IE T4INT 00’0090H24H

GPT2 Timer 5 T5IR T5IE T5INT 00’0094H25H

GPT2 Timer 6 T6IR T6IE T6INT 00’0098H26H

GPT2 CAPREL Reg. CRIR CRIE CRINT 00’009CH27H

ASC0 Transmit S0TIR S0TIE S0TINT 00’00A8H2AH

ASC0 Transmit Buffer S0TBIR S0TBIE S0TBINT 00’011CH47H

ASC0 Receive S0RIR S0RIE S0RINT 00’00ACH2BH

ASC0 Error S0EIR S0EIE S0EINT 00’00B0H2CH

SSC Transmit SCTIR SCTIE SCTINT 00’00B4H2DH

SSC Receive SCRIR SCRIE SCRINT 00’00B8H2EH

SSC Error SCEIR SCEIE SCEINT 00’00BCH2FH

C161K

C161O

Data Sheet 16 V2.0, 2001-01

The C161K/O also provides an excellent mechanism to identify and to process

exceptions or error conditions that arise during run-time, so-called ‘Hardware Traps’.

Hardware traps cause immediate non-maskable system reaction which is similar to a

standard interrupt service (branching to a dedicated vector table location). The

occurrence of a hardware trap is additionally signified by an individual bit in the trap flag

hardware trap will interrupt any actual program execution. In turn, hardware trap services

can normally not be interrupted by standard or PEC interrupts.

Table 4 shows all of the possible exceptions or error conditions that can arise during run-

time:

Table 4 Hardware Trap Summary

Exception Condition Trap

Flag

Trap

Vector

Location

Trap

Number

Trap

Priority

Reset Functions:

–Hardware Reset

–Software Reset

–W-dog Timer Overflow

–

RESET

00’0000H

00H

III

Class A Hardware Traps:

–Non-Maskable Interrupt

–Stack Overflow

–Stack Underflow

NMI

STKOF

STKUF

NMITRAP

STOTRAP

STUTRAP

00’0008H

00’0010H

00’0018H

02H

04H

06H

Class B Hardware Traps:

–Undefined Opcode

–Protected Instruction

Fault

–Illegal Word Operand

Access

–Illegal Instruction

Access

–Illegal External Bus

Access

UNDOPC

PRTFLT

ILLOPA

ILLINA

ILLBUS

BTRAP

00’0028H

0AH

Reserved –– [2CH –

3CH]

[0BH –

0FH]

–

Software Traps

–TRAP Instruction

–– Any

[00’0000H –

00’01FCH]

in steps

of 4H

Any

[00H –

7FH]

Current

CPU

Priority

C161K

C161O

Data Sheet 17 V2.0, 2001-01

General Purpose Timer (GPT) Unit

The GPT unit represents a very flexible multifunctional timer/counter structure which

may be used for many different time related tasks such as event timing and counting,

pulse width and duty cycle measurements, pulse generation, or pulse multiplication.

The GPT unit incorporates five 16-bit timers which are organized in two separate

modules, GPT1 and GPT2. Each timer in each module may operate independently in a

number of different modes, or may be concatenated with another timer of the same

module.

Each of the three timers T2, T3, T4 of module GPT1 can be configured individually for

one of four basic modes of operation, which are Timer, Gated Timer, Counter, and

Incremental Interface Mode. In Timer Mode, the input clock for a timer is derived from

the CPU clock, divided by a programmable prescaler, while Counter Mode allows a timer

to be clocked in reference to external events.

Pulse width or duty cycle measurement is supported in Gated Timer Mode, where the

operation of a timer is controlled by the ‘gate’ level on an external input pin. For these

purposes, each timer has one associated port pin (TxIN) which serves as gate or clock

input. The maximum resolution of the timers in module GPT1 is 16 TCL.

The count direction (up/down) for each timer is programmable by software or may

additionally be altered dynamically by an external signal on a port pin (TxEUD) to

facilitate e.g. position tracking.

In Incremental Interface Mode the GPT1 timers (T2, T3, T4) can be directly connected

to the incremental position sensor signals A and B via their respective inputs TxIN and

TxEUD. Direction and count signals are internally derived from these two input signals,

so the contents of the respective timer Tx corresponds to the sensor position. The third

position sensor signal TOP0 can be connected to an interrupt input.

Timer T3 has an output toggle latch (T3OTL) which changes its state on each timer over-

flow/underflow. The state of this latch may be output on pin T3OUT e.g. for time out

monitoring of external hardware components, or may be used internally to clock timers

T2 and T4 for measuring long time periods with high resolution.

In addition to their basic operating modes, timers T2 and T4 may be configured as reload

or capture registers for timer T3. When used as capture or reload registers, timers T2

and T4 are stopped. The contents of timer T3 is captured into T2 or T4 in response to a

signal at their associated input pins (TxIN). Timer T3 is reloaded with the contents of T2

or T4 triggered either by an external signal or by a selectable state transition of its toggle

latch T3OTL. When both T2 and T4 are configured to alternately reload T3 on opposite

state transitions of T3OTL with the low and high times of a PWM signal, this signal can

be constantly generated without software intervention.

C161K

C161O

Data Sheet 18 V2.0, 2001-01

Figure 5 Block Diagram of GPT1

With its maximum resolution of 8 TCL, the GPT2 module provides precise event control

and time measurement. It includes two timers (T5, T6) and a capture/reload register

(CAPREL). Both timers can be clocked with an input clock which is derived from the CPU

clock. The count direction (up/down) for each timer is programmable by software.

Concatenation of the timers is supported via the output toggle latch (T6OTL) of timer T6,

which changes its state on each timer overflow/underflow.

The state of this latch may be used to clock timer T5. The overflows/underflows of timer

T6 can cause a reload from the CAPREL register. The CAPREL register may capture

the contents of timer T5 based on an external signal transition on the corresponding port

pin (CAPIN), and timer T5 may optionally be cleared after the capture procedure. This

allows the C161K/O to measure absolute time differences or to perform pulse

multiplication without software overhead.

Mode

Control

: 1f

CPU

: 1f

CPU

Mode

Control

GPT1 Timer T2

Reload

Capture

: 1f

CPU

Mode

Control GPT1 Timer T4

Reload

Capture

GPT1 Timer T3 T3OTL

U/D

T2EUD

T2IN

T3IN

T3EUD

T4IN

T4EUD

T3OUT

Toggle FF

U/D

Interrupt

Request

Interrupt

Request

Interrupt

Request

Other

Timers

MCT02141

n = 3 … 10

C161K

C161O

Data Sheet 19 V2.0, 2001-01

The capture trigger (timer T5 to CAPREL) may also be generated upon transitions of

GPT1 timer T3’s inputs T3IN and/or T3EUD. This is especially advantageous when T3

operates in Incremental Interface Mode.

Note: Block GPT2 is only available in the C161O, not in the C161K.

Figure 6 Block Diagram of GPT2

MCB02938

MUX

: 1

CPU

Mode

Control

: 1

CPU

Mode

Control

T6OTL

CAPIN

T6OUT

U/D

Interrupt

Request

Interrupt

Request

Interrupt

Request

Other

Timers

Clear

Capture

CT3

GPT2 CAPREL

GPT2 Timer T6

GPT2 Timer T5

n = 2 … 9

C161K

C161O

Data Sheet 20 V2.0, 2001-01

Serial Channels

Serial communication with other microcontrollers, processors, terminals or external

peripheral components is provided by two serial interfaces with different functionality, an

Asynchronous/Synchronous Serial Channel (ASC0) and a High-Speed Synchronous

Serial Channel (SSC).

The ASC0 is upward compatible with the serial ports of the Infineon 8-bit microcontroller

families and supports full-duplex asynchronous communication at up to 781 kBaud and

half-duplex synchronous communication at up to 3.1 MBaud (@ 25 MHz CPU clock).

A dedicated baud rate generator allows to set up all standard baud rates without

oscillator tuning. For transmission, reception and error handling 4 separate interrupt

vectors are provided. In asynchronous mode, 8- or 9-bit data frames are transmitted or

received, preceded by a start bit and terminated by one or two stop bits. For

multiprocessor communication, a mechanism to distinguish address from data bytes has

been included (8-bit data plus wake up bit mode).

In synchronous mode, the ASC0 transmits or receives bytes (8 bits) synchronously to a

shift clock which is generated by the ASC0. The ASC0 always shifts the LSB first. A loop

back option is available for testing purposes.

A number of optional hardware error detection capabilities has been included to increase

the reliability of data transfers. A parity bit can automatically be generated on

transmission or be checked on reception. Framing error detection allows to recognize

data frames with missing stop bits. An overrun error will be generated, if the last

character received has not been read out of the receive buffer register at the time the

reception of a new character is complete.

The SSC supports full-duplex synchronous communication at up to 6.25 MBaud

(@ 25 MHz CPU clock). It may be configured so it interfaces with serially linked

peripheral components. A dedicated baud rate generator allows to set up all standard

baud rates without oscillator tuning. For transmission, reception, and error handling three

separate interrupt vectors are provided.

The SSC transmits or receives characters of 2 … 16 bits length synchronously to a shift

clock which can be generated by the SSC (master mode) or by an external master (slave

mode). The SSC can start shifting with the LSB or with the MSB and allows the selection

of shifting and latching clock edges as well as the clock polarity.

A number of optional hardware error detection capabilities has been included to increase

the reliability of data transfers. Transmit and receive error supervise the correct handling

of the data buffer. Phase and baudrate error detect incorrect serial data.

C161K

C161O

Data Sheet 21 V2.0, 2001-01

Watchdog Timer

The Watchdog Timer represents one of the fail-safe mechanisms which have been

implemented to prevent the controller from malfunctioning for longer periods of time.

The Watchdog Timer is always enabled after a reset of the chip, and can only be

disabled in the time interval until the EINIT (end of initialization) instruction has been

executed. Thus, the chip’s start-up procedure is always monitored. The software has to

be designed to service the Watchdog Timer before it overflows. If, due to hardware or

software related failures, the software fails to do so, the Watchdog Timer overflows and

generates an internal hardware reset and pulls the RSTOUT pin low in order to allow

external hardware components to be reset.

The Watchdog Timer is a 16-bit timer, clocked with the system clock divided by 2/128.

The high byte of the Watchdog Timer register can be set to a prespecified reload value

(stored in WDTREL) in order to allow further variation of the monitored time interval.

Each time it is serviced by the application software, the high byte of the Watchdog Timer

is reloaded. Thus, time intervals between 20 µs and 336 ms can be monitored

(@ 25 MHz).

The default Watchdog Timer interval after reset is 5.24 ms (@ 25 MHz).

Parallel Ports

The C161K/O provides up to 63 I/O lines which are organized into six input/output ports

and one input port. All port lines are bit-addressable, and all input/output lines are

individually (bit-wise) programmable as inputs or outputs via direction registers. The I/O

ports are true bidirectional ports which are switched to high impedance state when

configured as inputs. The output drivers of three I/O ports can be configured (pin by pin)

for push/pull operation or open-drain operation via control registers. During the internal

reset, all port pins are configured as inputs.

All port lines have programmable alternate input or output functions associated with

them. All port lines that are not used for these alternate functions may be used as general

purpose IO lines.

PORT0 and PORT1 may be used as address and data lines when accessing external

memory, while Port 4 outputs the additional segment address bits A21/19/17 …A16 in

systems where segmentation is enabled to access more than 64 KBytes of memory.

Port 6 provides optional chip select signals.

Port 3 includes alternate functions of timers, serial interfaces, and the optional bus

control signal BHE/WRH.

Port 5 is used for timer control signals.

C161K

C161O

Data Sheet 22 V2.0, 2001-01

Instruction Set Summary

Table 5 lists the instructions of the C161K/O in a condensed way.

The various addressing modes that can be used with a specific instruction, the operation

of the instructions, parameters for conditional execution of instructions, and the opcodes

for each instruction can be found in the “C166 Family Instruction Set Manual”.

This document also provides a detailed description of each instruction.

Table 5 Instruction Set Summary

Mnemonic Description Bytes

ADD(B) Add word (byte) operands 2 / 4

ADDC(B) Add word (byte) operands with Carry 2 / 4

SUB(B) Subtract word (byte) operands 2 / 4

SUBC(B) Subtract word (byte) operands with Carry 2 / 4

MUL(U) (Un)Signed multiply direct GPR by direct GPR (16-16-bit) 2

DIV(U) (Un)Signed divide register MDL by direct GPR (16-/16-bit) 2

DIVL(U) (Un)Signed long divide reg. MD by direct GPR (32-/16-bit) 2

CPL(B) Complement direct word (byte) GPR 2

NEG(B) Negate direct word (byte) GPR 2

AND(B) Bitwise AND, (word/byte operands) 2 / 4

OR(B) Bitwise OR, (word/byte operands) 2 / 4

XOR(B) Bitwise XOR, (word/byte operands) 2 / 4

BCLR Clear direct bit 2

BSET Set direct bit 2

BMOV(N) Move (negated) direct bit to direct bit 4

BAND, BOR,

BXOR

AND/OR/XOR direct bit with direct bit 4

BCMP Compare direct bit to direct bit 4

BFLDH/L Bitwise modify masked high/low byte of bit-addressable

direct word memory with immediate data

CMP(B) Compare word (byte) operands 2 / 4

CMPD1/2 Compare word data to GPR and decrement GPR by 1/2 2 / 4

CMPI1/2 Compare word data to GPR and increment GPR by 1/2 2 / 4

PRIOR Determine number of shift cycles to normalize direct

word GPR and store result in direct word GPR

SHL / SHR Shift left/right direct word GPR 2

ROL / ROR Rotate left/right direct word GPR 2

ASHR Arithmetic (sign bit) shift right direct word GPR 2

C161K

C161O

Data Sheet 23 V2.0, 2001-01

MOV(B) Move word (byte) data 2 / 4

MOVBS Move byte operand to word operand with sign extension 2 / 4

MOVBZ Move byte operand to word operand. with zero extension 2 / 4

JMPA, JMPI,

JMPR

Jump absolute/indirect/relative if condition is met 4

JMPS Jump absolute to a code segment 4

J(N)B Jump relative if direct bit is (not) set 4

JBC Jump relative and clear bit if direct bit is set 4

JNBS Jump relative and set bit if direct bit is not set 4

CALLA, CALLI,

CALLR

Call absolute/indirect/relative subroutine if condition is met 4

CALLS Call absolute subroutine in any code segment 4

PCALL Push direct word register onto system stack and call

absolute subroutine

TRAP Call interrupt service routine via immediate trap number 2

PUSH, POP Push/pop direct word register onto/from system stack 2

SCXT Push direct word register onto system stack and update

RET Return from intra-segment subroutine 2

RETS Return from inter-segment subroutine 2

RETP Return from intra-segment subroutine and pop direct

word register from system stack

RETI Return from interrupt service subroutine 2

SRST Software Reset 4

IDLE Enter Idle Mode 4

PWRDN Enter Power Down Mode (supposes NMI-pin being low) 4

SRVWDT Service Watchdog Timer 4

DISWDT Disable Watchdog Timer 4

EINIT Signify End-of-Initialization on RSTOUT-pin 4

ATOMIC Begin ATOMIC sequence 2

EXTR Begin EXTended Register sequence 2

EXTP(R) Begin EXTended Page (and Register) sequence 2 / 4

EXTS(R) Begin EXTended Segment (and Register) sequence 2 / 4

NOP Null operation 2

Table 5 Instruction Set Summary (cont’d)

Mnemonic Description Bytes

C161K

C161O

Data Sheet 24 V2.0, 2001-01

Special Function Registers Overview

The following table lists all SFRs which are implemented in the C161K/O in alphabetical

order.

Bit-addressable SFRs are marked with the letter “b” in column “Name”. SFRs within the

Extended SFR-Space (ESFRs) are marked with the letter “E” in column “Physical

Address”. Registers within on-chip X-peripherals are marked with the letter “X” in column

“Physical Address”.

An SFR can be specified via its individual mnemonic name. Depending on the selected

addressing mode, an SFR can be accessed via its physical address (using the Data

Page Pointers), or via its short 8-bit address (without using the Data Page Pointers).

Note: The shaded registers are only available in the C161O, not in the C161K.

Table 6 C161K/O Registers, Ordered by Name

Name Physical

Address

8-Bit

Addr.

Description Reset

Value

ADDRSEL1 FE18H0CHAddress Select Register 1 0000H

ADDRSEL2 FE1AH0DHAddress Select Register 2 0000H

ADDRSEL3 FE1CH0EHAddress Select Register 3 0000H

ADDRSEL4 FE1EH0FHAddress Select Register 4 0000H

BUSCON0 b FF0CH86HBus Configuration Register 0 0XX0H

BUSCON1 b FF14H8AHBus Configuration Register 1 0000H

BUSCON2 b FF16H8BHBus Configuration Register 2 0000H

BUSCON3 b FF18H8CHBus Configuration Register 3 0000H

BUSCON4 b FF1AH8DHBus Configuration Register 4 0000H

CAPREL FE4AH25HGPT2 Capture/Reload Register 0000H

CC10IC b FF8CHC6HEX2IN Interrupt Control Register 0000H

CC11IC b FF8EHC7HEX3IN Interrupt Control Register 0000H

CC12IC b FF90HC8HEX4IN Interrupt Control Register 0000H

CC13IC b FF92HC9HEX5IN Interrupt Control Register 0000H

CC14IC b FF94HCAHEX6IN Interrupt Control Register 0000H

CC15IC b FF96HCBHEX7IN Interrupt Control Register 0000H

CC9IC b FF8AHC5HEX1IN Interrupt Control Register 0000H

CP FE10H08HCPU Context Pointer Register FC00H

CRIC b FF6AHB5HGPT2 CAPREL Interrupt Ctrl. Reg. 0000H

CSP FE08H04HCPU Code Seg. Pointer Reg. (read only) 0000H

C161K

C161O

Data Sheet 25 V2.0, 2001-01

DP0H b F102HE81HP0H Direction Control Register 00H

DP0L b F100HE80HP0L Direction Control Register 00H

DP1H b F106HE83HP1H Direction Control Register 00H

DP1L b F104HE82HP1L Direction Control Register 00H

DP2 b FFC2HE1HPort 2 Direction Control Register 0000H

DP3 b FFC6HE3HPort 3 Direction Control Register 0000H

DP4 b FFCAHE5HPort 4 Direction Control Register 00H

DP6 b FFCEHE7HPort 6 Direction Control Register 00H

DPP0 FE00H00HCPU Data Page Pointer 0 Reg. (10 bits) 0000H

DPP1 FE02H01HCPU Data Page Pointer 1 Reg. (10 bits) 0001H

DPP2 FE04H02HCPU Data Page Pointer 2 Reg. (10 bits) 0002H

DPP3 FE06H03HCPU Data Page Pointer 3 Reg. (10 bits) 0003H

EXICON b F1C0HEE0HExternal Interrupt Control Register 0000H

IDCHIP F07CHE3EHIdentifier 05XXH

IDMANUF F07EHE3FHIdentifier 1820H

IDMEM F07AHE3DHIdentifier 0000H

IDMEM2 F076HE3BHIdentifier 0000H

IDPROG F078HE3CHIdentifier 0000H

MDC b FF0EH87HCPU Multiply Divide Control Register 0000H

MDH FE0CH06HCPU Multiply Divide Reg. – High Word 0000H

MDL FE0EH07HCPU Multiply Divide Reg. – Low Word 0000H

ODP2 b F1C2HEE1HPort 2 Open Drain Control Register 0000H

ODP3 b F1C6HEE3HPort 3 Open Drain Control Register 0000H

ODP6 b F1CEHEE7HPort 6 Open Drain Control Register 00H

ONES b FF1EH8FHConstant Value 1’s Register (read only) FFFFH

P0H b FF02H81HPort 0 High Reg. (Upper half of PORT0) 00H

P0L b FF00H80HPort 0 Low Reg. (Lower half of PORT0) 00H

P1H b FF06H83HPort 1 High Reg. (Upper half of PORT1) 00H

P1L b FF04H82HPort 1 Low Reg.(Lower half of PORT1) 00H

P2 b FFC0HE0HPort 2 Register 0000H

Table 6 C161K/O Registers, Ordered by Name (cont’d)

Name Physical

Address

8-Bit

Addr.

Description Reset

Value

C161K

C161O

Data Sheet 26 V2.0, 2001-01

P3 b FFC4HE2HPort 3 Register 0000H

P4 b FFC8HE4HPort 4 Register (8 bits) 00H

P5 b FFA2HD1HPort 5 Register (read only) XXXXH

P6 b FFCCHE6HPort 6 Register (8 bits) 00H

PECC0 FEC0H60HPEC Channel 0 Control Register 0000H

PECC1 FEC2H61HPEC Channel 1 Control Register 0000H

PECC2 FEC4H62HPEC Channel 2 Control Register 0000H

PECC3 FEC6H63HPEC Channel 3 Control Register 0000H

PECC4 FEC8H64HPEC Channel 4 Control Register 0000H

PECC5 FECAH65HPEC Channel 5 Control Register 0000H

PECC6 FECCH66HPEC Channel 6 Control Register 0000H

PECC7 FECEH67HPEC Channel 7 Control Register 0000H

PSW b FF10H88HCPU Program Status Word 0000H

RP0H b F108HE84HSystem Startup Config. Reg. (Rd. only) XXH

S0BG FEB4H5AHSerial Channel 0 Baud Rate Generator

Reload Register

0000H

S0CON b FFB0HD8HSerial Channel 0 Control Register 0000H

S0EIC b FF70HB8HSerial Channel 0 Error Interrupt Ctrl. Reg 0000H

S0RBUF FEB2H59HSerial Channel 0 Receive Buffer Reg.

(read only)

XXH

S0RIC b FF6EHB7HSerial Channel 0 Receive Interrupt

Control Register

0000H

S0TBIC b F19CHECEHSerial Channel 0 Transmit Buffer

Interrupt Control Register

0000H

S0TBUF FEB0H58HSerial Channel 0 Transmit Buffer

00H

S0TIC b FF6CHB6HSerial Channel 0 Transmit Interrupt

Control Register

0000H

SP FE12H09HCPU System Stack Pointer Register FC00H

SSCBR F0B4HE5AHSSC Baudrate Register 0000H

SSCCON b FFB2HD9HSSC Control Register 0000H

Table 6 C161K/O Registers, Ordered by Name (cont’d)

Name Physical

Address

8-Bit

Addr.

Description Reset

Value

C161K

C161O

Data Sheet 27 V2.0, 2001-01

SSCEIC b FF76HBBHSSC Error Interrupt Control Register 0000H

SSCRB F0B2HE59HSSC Receive Buffer XXXXH

SSCRIC b FF74HBAHSSC Receive Interrupt Control Register 0000H

SSCTB F0B0HE58HSSC Transmit Buffer 0000H

SSCTIC b FF72HB9HSSC Transmit Interrupt Control Register 0000H

STKOV FE14H0AHCPU Stack Overflow Pointer Register FA00H

STKUN FE16H0BHCPU Stack Underflow Pointer Register FC00H

SYSCON b FF12H89HCPU System Configuration Register 1)0XX0H

T2 FE40H20HGPT1 Timer 2 Register 0000H

T2CON b FF40HA0HGPT1 Timer 2 Control Register 0000H

T2IC b FF60HB0HGPT1 Timer 2 Interrupt Control Register 0000H

T3 FE42H21HGPT1 Timer 3 Register 0000H

T3CON b FF42HA1HGPT1 Timer 3 Control Register 0000H

T3IC b FF62HB1HGPT1 Timer 3 Interrupt Control Register 0000H

T4 FE44H22HGPT1 Timer 4 Register 0000H

T4CON b FF44HA2HGPT1 Timer 4 Control Register 0000H

T4IC b FF64HB2HGPT1 Timer 4 Interrupt Control Register 0000H

T5 FE46H23HGPT2 Timer 5 Register 0000H

T5CON b FF46HA3HGPT2 Timer 5 Control Register 0000H

T5IC b FF66HB3HGPT2 Timer 5 Interrupt Control Register 0000H

T6 FE48H24HGPT2 Timer 6 Register 0000H

T6CON b FF48HA4HGPT2 Timer 6 Control Register 0000H

T6IC b FF68HB4HGPT2 Timer 6 Interrupt Control Register 0000H

TFR b FFACHD6HTrap Flag Register 0000H

WDT FEAEH57HWatchdog Timer Register (read only) 0000H

WDTCON b FFAEHD7HWatchdog Timer Control Register 2)00XXH

ZEROS b FF1CH8EHConstant Value 0’s Register (read only) 0000H

1) The system configuration is selected during reset.

2) The reset value depends on the indicated reset source.

Table 6 C161K/O Registers, Ordered by Name (cont’d)

Name Physical

Address

8-Bit

Addr.

Description Reset

Value

C161K

C161O

Data Sheet 28 V2.0, 2001-01

Absolute Maximum Ratings

Note: Stresses above those listed under “Absolute Maximum Ratings” may cause

permanent damage to the device. This is a stress rating only and functional

operation of the device at these or any other conditions above those indicated in

the operational sections of this specification is not implied. Exposure to absolute

maximum rating conditions for extended periods may affect device reliability.

During absolute maximum rating overload conditions (VIN > VDD or VIN < VSS) the

voltage on VDD pins with respect to ground (VSS) must not exceed the values

defined by the absolute maximum ratings.

Table 7 Absolute Maximum Rating Parameters

Parameter Symbol Limit Values Unit Notes

min. max.

Storage temperature TST -65 150 °C–

Junction temperature TJ-40 150 °C under bias

Voltage on VDD pins with

respect to ground (VSS)

VDD -0.5 6.5 V –

Voltage on any pin with

respect to ground (VSS)

VIN -0.5 VDD +0.5 V –

Input current on any pin

during overload condition

–-10 10 mA –

Absolute sum of all input

currents during overload

condition

–– |100| mA –

Power dissipation PDISS –1.5 W –

C161K

C161O

Data Sheet 29 V2.0, 2001-01

Operating Conditions

The following operating conditions must not be exceeded in order to ensure correct

operation of the C161K/O. All parameters specified in the following sections refer to

these operating conditions, unless otherwise noticed.

Table 8 Operating Condition Parameters

Parameter Symbol Limit Values Unit Notes

min. max.

Standard

digital supply voltage

(5 V versions)

VDD 4.5 5.5 V Active mode,

fCPUmax = 25 MHz

2.51)

1) Output voltages and output currents will be reduced when VDD leaves the range defined for active mode.

5.5 V Power Down mode

Reduced

digital supply voltage

(3 V versions)

VDD 3.0 3.6 V Active mode,

fCPUmax = 20 MHz

2.51) 3.6 V Power Down mode

Digital ground voltage VSS 0 V Reference voltage

Overload current IOV –±5mAPer pin

2)3)

2) Overload conditions occur if the standard operatings conditions are exceeded, i.e. the voltage on any pin

exceeds the specified range (i.e. VOV >VDD +0.5V or VOV <VSS - 0.5 V). The absolute sum of input overload

currents on all pins may not exceed 50 mA. The supply voltage must remain within the specified limits.

Proper operation is not guaranteed if overload conditions occur on functional pins such as XTAL1, RD, WR,

etc.

3) Not 100% tested, guaranteed by design and characterization.

Absolute sum of overload

currents Σ|IOV|–50 mA 3)

External Load

Capacitance

CL–100 pF –

Ambient temperature TA070°C SAB-C161K/O …

-40 85 °C SAF-C161K/O …

-40 125 °C SAK-C161K/O …

C161K

C161O

Data Sheet 30 V2.0, 2001-01

Parameter Interpretation

The parameters listed in the following partly represent the characteristics of the C161K/

O and partly its demands on the system. To aid in interpreting the parameters right, when

evaluating them for a design, they are marked in column “Symbol”:

CC (Controller Characteristics):

The logic of the C161K/O will provide signals with the respective timing characteristics.

SR (System Requirement):

The external system must provide signals with the respective timing characteristics to

the C161K/O.

DC Characteristics (Standard Supply Voltage Range)

(Operating Conditions apply)1)

Parameter Symbol Limit Values Unit Test Condition

min. max.

Input low voltage (TTL,

all except XTAL1)

VIL SR -0.5 0.2 VDD

- 0.1

V–

Input low voltage XTAL1 VIL2 SR -0.5 0.3 VDD V–

Input high voltage (TTL,

all except RSTIN and XTAL1)

VIH SR 0.2 VDD

+ 0.9

VDD +

0.5

V–

Input high voltage RSTIN

(when operated as input)

VIH1 SR 0.6 VDD VDD +

0.5

V–

Input high voltage XTAL1 VIH2 SR 0.7 VDD VDD +

0.5

V–

Output low voltage

(PORT0, PORT1, Port 4, ALE,

RD, WR, BHE, RSTOUT,

RSTIN2))

VOL CC –0.45 V IOL = 2.4 mA

Output low voltage

(all other outputs)

VOL1 CC –0.45 V IOL = 1.6 mA

Output high voltage3)

(PORT0, PORT1, Port 4, ALE,

RD, WR, BHE, RSTOUT)

VOH CC 2.4 –VIOH = -2.4 mA

0.9 VDD –VIOH = -0.5 mA

Output high voltage3)

(all other outputs)

VOH1CC 2.4 –VIOH = -1.6 mA

0.9 VDD –VIOH = -0.5 mA

Input leakage current (Port 5) IOZ1 CC –±200 nA 0 V < VIN < VDD

Input leakage current (all other) IOZ2 CC –±500 nA 0.45 V < VIN < VDD

RSTIN inactive current4) IRSTH5) –-10 µAVIN = VIH1

C161K
C161O
Data Sheet 31 V2.0, 2001-01
 
RSTIN active current4) IRSTL6) -100 –µAVIN = VIL
RD/WR inact. current7) IRWH5) –-40 µAVOUT = 2.4 V
RD/WR active current7) IRWL6) -500 –µAVOUT = VOLmax
ALE inactive current7) IALEL5) –40 µAVOUT = VOLmax
ALE active current7) IALEH6) 500 –µAVOUT = 2.4 V
Port 6 inactive current7) IP6H5) –-40 µAVOUT = 2.4 V
Port 6 active current7) IP6L6) -500 –µAVOUT = VOL1max
PORT0 configuration current7) IP0H5) –-10 µAVIN = VIHmin
IP0L6) -100 –µAVIN = VILmax
XTAL1 input current IIL CC –±20 µA0 V < VIN < VDD
Pin capacitance8)
(digital inputs/outputs)
CIO CC –10 pF f = 1 MHz
TA = 25 °C
1) Keeping signal levels within the levels specified in this table, ensures operation without overload conditions.
For signal levels outside these specifications also refer to the specification of the overload current IOV.
2) Valid in bidirectional reset mode only.
3) This specification is not valid for outputs which are switched to open drain mode. In this case the respective
output will float and the voltage results from the external circuitry.
4) These parameters describe the RSTIN pullup, which equals a resistance of ca. 50 to 250 kΩ.
5) The maximum current may be drawn while the respective signal line remains inactive.
6) The minimum current must be drawn in order to drive the respective signal line active.
7) This specification is valid during Reset and during Adapt-mode.
8) Not 100% tested, guaranteed by design and characterization.
DC Characteristics (Standard Supply Voltage Range) (cont’d)
(Operating Conditions apply)1)
Parameter Symbol Limit Values Unit Test Condition
min. max.

C161K
C161O
Data Sheet 32 V2.0, 2001-01
 
DC Characteristics (Reduced Supply Voltage Range)
(Operating Conditions apply)1)
Parameter Symbol Limit Values Unit Test Condition
min. max.
Input low voltage (TTL,
all except XTAL1)
VIL SR -0.5 0.8 V –
Input low voltage XTAL1 VIL2 SR -0.5 0.3 VDD V–
Input high voltage (TTL,
all except RSTIN and XTAL1)
VIH SR 1.8 VDD + 
0.5
V–
Input high voltage RSTIN
(when operated as input)
VIH1 SR 0.6 VDD VDD + 
0.5
V–
Input high voltage XTAL1 VIH2 SR 0.7 VDD VDD + 
0.5
V–
Output low voltage
(PORT0, PORT1, Port 4, ALE, 
RD, WR, BHE, RSTOUT, 
RSTIN2))
VOL CC –0.45 V IOL = 1.6 mA
Output low voltage
(all other outputs)
VOL1 CC –0.45 V IOL = 1.0 mA
Output high voltage3)
(PORT0, PORT1, Port 4, ALE, 
RD, WR, BHE, RSTOUT)
VOH CC 0.9 VDD –VIOH = -0.5 mA
Output high voltage3)
(all other outputs)
VOH1 CC 0.9 VDD –VIOH = -0.25 mA
Input leakage current (Port 5) IOZ1 CC –±200 nA 0 V < VIN < VDD
Input leakage current (all other) IOZ2 CC –±500 nA 0.45 V < VIN < VDD
RSTIN inactive current4) IRSTH5) –-10 µAVIN = VIH1
RSTIN active current4) IRSTL6) -100 –µAVIN = VIL
RD/WR inact. current7) IRWH5) –-10 µAVOUT = 2.4 V
RD/WR active current7) IRWL6) -500 –µAVOUT = VOLmax
ALE inactive current7) IALEL5) –20 µAVOUT = VOLmax
ALE active current7) IALEH6) 500 –µAVOUT = 2.4 V
Port 6 inactive current7) IP6H5) –-10 µAVOUT = 2.4 V
Port 6 active current7) IP6L6) -500 –µAVOUT = VOL1max

C161K

C161O

Data Sheet 33 V2.0, 2001-01

PORT0 configuration current7) IP0H5) –-5 µAVIN = VIHmin

IP0L6) -100 –µAVIN = VILmax

XTAL1 input current IIL CC –±20 µA0 V < VIN < VDD

Pin capacitance8)

(digital inputs/outputs)

CIO CC –10 pF f = 1 MHz

TA = 25 °C

1) Keeping signal levels within the levels specified in this table, ensures operation without overload conditions.

For signal levels outside these specifications also refer to the specification of the overload current IOV.

2) Valid in bidirectional reset mode only.

3) This specification is not valid for outputs which are switched to open drain mode. In this case the respective

output will float and the voltage results from the external circuitry.

4) These parameters describe the RSTIN pullup, which equals a resistance of ca. 50 to 250 kΩ.

5) The maximum current may be drawn while the respective signal line remains inactive.

6) The minimum current must be drawn in order to drive the respective signal line active.

7) This specification is valid during Reset and during Adapt-mode.

8) Not 100% tested, guaranteed by design and characterization.

DC Characteristics (Reduced Supply Voltage Range) (cont’d)

(Operating Conditions apply)1)

Parameter Symbol Limit Values Unit Test Condition

min. max.

C161K

C161O

Data Sheet 34 V2.0, 2001-01

Power Consumption C161K/O (Standard Supply Voltage Range)

(Operating Conditions apply)

Parameter Symbol Limit Values Unit Test Condition

min. max.

Power supply current (active)

with all peripherals active

IDD5 –15 +

1.8 × fCPU

mA RSTIN = VIL

fCPU in [MHz]1)

Idle mode supply current

with all peripherals active

IIDX5 –2 +

0.4 × fCPU

mA RSTIN = VIH1

fCPU in [MHz]1)

Power-down mode supply

current

IPDO5 –50 µAVDD = VDDmax2)

1) The supply current is a function of the operating frequency. This dependency is illustrated in Figure 7.

These parameters are tested at VDDmax and maximum CPU clock with all outputs disconnected and all inputs

at VIL or VIH.

2) This parameter is tested including leakage currents. All inputs (including pins configured as inputs) at 0 V to

0.1 V or at VDD - 0.1 V to VDD, all outputs (including pins configured as outputs) disconnected.

Power Consumption C161K/O (Reduced Supply Voltage Range)

(Operating Conditions apply)

Parameter Symbol Limit Values Unit Test Condition

min. max.

Power supply current (active)

with all peripherals active

IDD3 –3 +

1.3 ×fCPU

mA RSTIN = VIL

fCPU in [MHz]1)

1) The supply current is a function of the operating frequency. This dependency is illustrated in Figure 7.

These parameters are tested at VDDmax and maximum CPU clock with all outputs disconnected and all inputs

at VIL or VIH.

Idle mode supply current

with all peripherals active

IIDX3 –1 +

0.4 × fCPU

mA RSTIN = VIH1

fCPU in [MHz]1)

Power-down mode supply

current

IPDO3 –30 µAVDD = VDDmax2)

2) This parameter is tested including leakage currents. All inputs (including pins configured as inputs) at 0 V to

0.1 V or at VDD - 0.1 V to VDD, all outputs (including pins configured as outputs) disconnected.

C161K

C161O

Data Sheet 35 V2.0, 2001-01

Figure 7 Supply/Idle Current as a Function of Operating Frequency

MCD04860

CPU

10 20 30 400

100

MHz

DD5max

DD5typ

DD3max

DD3typ

IDX5max

IDX3max

IDX5typ

IDX3typ

C161K

C161O

Data Sheet 36 V2.0, 2001-01

AC Characteristics

Definition of Internal Timing

The internal operation of the C161K/O is controlled by the internal CPU clock fCPU. Both

edges of the CPU clock can trigger internal (e.g. pipeline) or external (e.g. bus cycles)

operations.

The specification of the external timing (AC Characteristics) therefore depends on the

time between two consecutive edges of the CPU clock, called “TCL” (see Figure 8).

Figure 8 Generation Mechanisms for the CPU Clock

The CPU clock signal fCPU can be generated from the oscillator clock signal fOSC via

different mechanisms. The duration of TCLs and their variation (and also the derived

external timing) depends on the used mechanism to generate fCPU. This influence must

be regarded when calculating the timings for the C161K/O.

The used mechanism to generate the basic CPU clock is selected by bitfield CLKCFG

in register RP0H.7-5. Upon a long hardware reset register RP0H is loaded with the logic

levels present on the upper half of PORT0 (P0H), i.e. bitfield CLKCFG represents the

logic levels on pins P0.15-13 (P0H.7-5).

Table 9 associates the combinations of these three bits with the respective clock

generation mode.

MCT04826

OSC

CPU

Direct Clock Drive

OSC

CPU

Prescaler Operation

TCL

C161K

C161O

Data Sheet 37 V2.0, 2001-01

Prescaler Operation

When prescaler operation is configured (CLKCFG = 1XXB) the CPU clock is derived

from the internal oscillator (input clock signal) by a 2:1 prescaler.

The frequency of fCPU is half the frequency of fOSC and the high and low time of fCPU (i.e.

the duration of an individual TCL) is defined by the period of the input clock fOSC.

The timings listed in the AC Characteristics that refer to TCLs therefore can be

calculated using the period of fOSC for any TCL.

Direct Drive

When direct drive is configured (CLKCFG = 0XXB) the CPU clock is directly driven from

the internal oscillator with the input clock signal.

The frequency of fCPU directly follows the frequency of fOSC so the high and low time of

fCPU (i.e. the duration of an individual TCL) is defined by the duty cycle of the input clock

fOSC.

The timings listed below that refer to TCLs therefore must be calculated using the

minimum TCL that is possible under the respective circumstances. This minimum value

can be calculated via the following formula:

TCLmin = 1/fOSC × DCmin (DC = duty cycle)

For two consecutive TCLs the deviation caused by the duty cycle of fOSC is compensated

so the duration of 2TCL is always 1/fOSC. The minimum value TCLmin therefore has to

be used only once for timings that require an odd number of TCLs (1, 3, …). Timings that

require an even number of TCLs (2, 4, …) may use the formula 2TCL = 1/fOSC.

Table 9 C161K/O Clock Generation Modes

CLKCFG

(P0H.7-5)

CPU Frequency

fCPU = fOSC × F

External Clock

Input Range

Notes

0XX fOSC × 1 1 to 25 MHz Direct drive1)

1XX fOSC / 2 2 to 50 MHz CPU clock via prescaler

1) The maximum frequency depends on the duty cycle of the external clock signal.

C161K

C161O

Data Sheet 38 V2.0, 2001-01

AC Characteristics

Table 10 External Clock Drive XTAL1 (Standard Supply Voltage Range)

(Operating Conditions apply)

Parameter Symbol Direct Drive

1:1

Prescaler

2:1

Unit

min. max. min. max.

Oscillator period tOSC SR 40 –20 –ns

High time1)

1) The clock input signal must reach the defined levels VIL2 and VIH2.

t1SR 202)

2) The minimum high and low time refers to a duty cycle of 50%. The maximum operating frequency (fCPU) in

direct drive mode depends on the duty cycle of the clock input signal.

–6–ns

Low time1) t2SR 202) –6–ns

Rise time1) t3SR –10 –6ns

Fall time1) t4SR –10 –6ns

Table 11 External Clock Drive XTAL1 (Reduced Supply Voltage Range)

(Operating Conditions apply)

Parameter Symbol Direct Drive

1:1

Prescaler

2:1

Unit

min. max. min. max.

Oscillator period tOSC SR 50 –25 –ns

High time1)

1) The clock input signal must reach the defined levels VIL2 and VIH2.

t1SR 252)

2) The minimum high and low time refers to a duty cycle of 50%. The maximum operating frequency (fCPU) in

direct drive mode depends on the duty cycle of the clock input signal.

–8–ns

Low time1) t2SR 252) –8–ns

Rise time1) t3SR –10 –6ns

Fall time1) t4SR –10 –6ns

C161K

C161O

Data Sheet 39 V2.0, 2001-01

Figure 9 External Clock Drive XTAL1

Note: If the on-chip oscillator is used together with a crystal, the oscillator frequency is

limited to a range of 4 MHz to 40 MHz.

It is strongly recommended to measure the oscillation allowance (or margin) in the

final target system (layout) to determine the optimum parameters for the oscillator

operation. Please refer to the limits specified by the crystal supplier.

When driven by an external clock signal it will accept the specified frequency

range. Operation at lower input frequencies is possible but is guaranteed by

design only (not 100% tested).

MCT02534

VIH2

VIL

VDD

0.5

OSC

C161K

C161O

Data Sheet 40 V2.0, 2001-01

Testing Waveforms

Figure 10 Input Output Waveforms

Figure 11 Float Waveforms

MCA04414

2.4 V

0.45 V

1.8 V

0.8 V

1.8 V

0.8 V

Test Points

AC inputs during testing are driven at 2.4 V for a logic 1’ and 0.45 V for a logic 0’.

Timing measurements are made at IH

min for a logic 1’ and

IL max for a logic 0’.

’’’ ’

MCA00763

- 0.1 V

+ 0.1 V

- 0.1 V

Reference

For timing purposes a port pin is no longer floating when a 100 mV change from load voltage occurs,

but begins to float when a 100 mV change from the loaded

Timing

Points

Load

level occurs (

OH OL

/ = 20 mA).

C161K

C161O

Data Sheet 41 V2.0, 2001-01

Memory Cycle Variables

The timing tables below use three variables which are derived from the BUSCONx

registers and represent the special characteristics of the programmed memory cycle.

The following table describes, how these variables are to be computed.

Note: Please respect the maximum operating frequency of the respective derivative.

AC Characteristics

Table 12 Memory Cycle Variables

Description Symbol Values

ALE Extension tATCL × <ALECTL>

Memory Cycle Time Waitstates tC2TCL × (15 - <MCTC>)

Memory Tristate Time tF2TCL × (1 - <MTTC>)

Multiplexed Bus (Standard Supply Voltage Range)

(Operating Conditions apply)

ALE cycle time = 6 TCL + 2tA + tC + tF (120 ns at 25 MHz CPU clock without waitstates)

Parameter Symbol Max. CPU Clock

= 25 MHz

Variable CPU Clock

1 / 2TCL = 1 to 25 MHz

Unit

min. max. min. max.

ALE high time t5CC 10 + tA–TCL - 10

+ tA

–ns

Address setup to ALE t6CC 4 + tA–TCL - 16

+ tA

–ns

Address hold after ALE t7CC 10 + tA–TCL - 10

+ tA

–ns

ALE falling edge to RD,

WR (with RW-delay)

t8CC 10 + tA–TCL - 10

+ tA

–ns

ALE falling edge to RD,

WR (no RW-delay)

t9CC -10 + tA–-10 + tA–ns

Address float after RD,

WR (with RW-delay)

t10 CC –6–6ns

Address float after RD,

WR (no RW-delay)

t11 CC –26 –TCL + 6 ns

RD, WR low time

(with RW-delay)

t12 CC 30 + tC–2TCL - 10

+ tC

–ns

C161K

C161O

Data Sheet 42 V2.0, 2001-01

RD, WR low time

(no RW-delay)

t13 CC 50 + tC–3TCL - 10

+ tC

–ns

RD to valid data in

(with RW-delay)

t14 SR –20 + tC–2TCL - 20

+ tC

RD to valid data in

(no RW-delay)

t15 SR –40 + tC–3TCL - 20

+ tC

ALE low to valid data in t16 SR –40 + tA

+ tC

–3TCL - 20

+ tA + tC

Address to valid data in t17 SR –50 + 2tA

+ tC

–4TCL - 30

+ 2tA + tC

Data hold after RD

rising edge

t18 SR 0 –0–ns

Data float after RD t19 SR –26 + tF–2TCL - 14

+ tF

Data valid to WR t22 CC 20 + tC–2TCL - 20

+ tC

–ns

Data hold after WR t23 CC 26 + tF–2TCL - 14

+ tF

–ns

ALE rising edge after RD,

t25 CC 26 + tF–2TCL - 14

+ tF

–ns

Address hold after RD,

t27 CC 26 + tF–2TCL - 14

+ tF

–ns

ALE falling edge to CS1) t38 CC -4 - tA10 - tA-4 - tA10 - tAns

CS low to Valid Data In1) t39 SR –40 + tC

+ 2tA

–3TCL - 20

+ tC + 2tA

CS hold after RD, WR1) t40 CC 46 + tF–3TCL - 14

+ tF

–ns

ALE fall. edge to RdCS,

WrCS (with RW delay)

t42 CC 16 + tA–TCL - 4

+ tA

–ns

ALE fall. edge to RdCS,

WrCS (no RW delay)

t43 CC -4 + tA–-4

+ tA

–ns

Multiplexed Bus (Standard Supply Voltage Range) (cont’d)

(Operating Conditions apply)

ALE cycle time = 6 TCL + 2tA + tC + tF (120 ns at 25 MHz CPU clock without waitstates)

Parameter Symbol Max. CPU Clock

= 25 MHz

Variable CPU Clock

1 / 2TCL = 1 to 25 MHz

Unit

min. max. min. max.

C161K

C161O

Data Sheet 43 V2.0, 2001-01

Address float after RdCS,

WrCS (with RW delay)

t44 CC –0–0ns

Address float after RdCS,

WrCS (no RW delay)

t45 CC –20 –TCL ns

RdCS to Valid Data In

(with RW delay)

t46 SR –16 + tC–2TCL - 24

+ tC

RdCS to Valid Data In

(no RW delay)

t47 SR –36 + tC–3TCL - 24

+ tC

RdCS, WrCS Low Time

(with RW delay)

t48 CC 30 + tC–2TCL - 10

+ tC

–ns

RdCS, WrCS Low Time

(no RW delay)

t49 CC 50 + tC–3TCL - 10

+ tC

–ns

Data valid to WrCS t50 CC 26 + tC–2TCL - 14

+ tC

–ns

Data hold after RdCS t51 SR 0 –0–ns

Data float after RdCS t52 SR –20 + tF–2TCL - 20

+ tF

Address hold after

RdCS, WrCS

t54 CC 20 + tF–2TCL - 20

+ tF

–ns

Data hold after WrCS t56 CC 20 + tF–2TCL - 20

+ tF

–ns

1) These parameters refer to the latched chip select signals (CSxL). The early chip select signals (CSxE) are

specified together with the address and signal BHE (see figures below).

Multiplexed Bus (Standard Supply Voltage Range) (cont’d)

(Operating Conditions apply)

ALE cycle time = 6 TCL + 2tA + tC + tF (120 ns at 25 MHz CPU clock without waitstates)

Parameter Symbol Max. CPU Clock

= 25 MHz

Variable CPU Clock

1 / 2TCL = 1 to 25 MHz

Unit

min. max. min. max.

C161K

C161O

Data Sheet 44 V2.0, 2001-01

AC Characteristics

Multiplexed Bus (Reduced Supply Voltage Range)

(Operating Conditions apply)

ALE cycle time = 6 TCL + 2tA + tC + tF (150 ns at 20 MHz CPU clock without waitstates)

Parameter Symbol Max. CPU Clock

= 20 MHz

Variable CPU Clock

1 / 2TCL = 1 to 20 MHz

Unit

min. max. min. max.

ALE high time t5CC 11 + tA–TCL - 14

+ tA

–ns

Address setup to ALE t6CC 5 + tA–TCL - 20

+ tA

–ns

Address hold after ALE t7CC 15 + tA–TCL - 10

+ tA

–ns

ALE falling edge to RD,

WR (with RW-delay)

t8CC 15 + tA–TCL - 10

+ tA

–ns

ALE falling edge to RD,

WR (no RW-delay)

t9CC -10 + tA–-10 + tA–ns

Address float after RD,

WR (with RW-delay)

t10 CC –6–6ns

Address float after RD,

WR (no RW-delay)

t11 CC –31 –TCL + 6 ns

RD, WR low time

(with RW-delay)

t12 CC 34 + tC–2TCL - 16

+ tC

–ns

RD, WR low time

(no RW-delay)

t13 CC 59 + tC–3TCL - 16

+tC

–ns

RD to valid data in

(with RW-delay)

t14 SR –22 + tC–2TCL - 28

+ tC

RD to valid data in

(no RW-delay)

t15 SR –47 + tC–3TCL - 28

+ tC

ALE low to valid data in t16 SR –45 + tA

+ tC

–3TCL - 30

+ tA + tC

Address to valid data in t17 SR –57 + 2tA

+ tC

–4TCL - 43

+ 2tA + tC

Data hold after RD

rising edge

t18 SR 0 –0–ns

C161K

C161O

Data Sheet 45 V2.0, 2001-01

Data float after RD t19 SR –36 + tF–2TCL - 14

+ tF

Data valid to WR t22 CC 24 + tC–2TCL - 26

+ tC

–ns

Data hold after WR t23 CC 36 + tF–2TCL - 14

+ tF

–ns

ALE rising edge after RD,

t25 CC 36 + tF–2TCL - 14

+ tF

–ns

Address hold after RD,

t27 CC 36 + tF–2TCL - 14

+ tF

–ns

ALE falling edge to CS1) t38 CC -8 - tA10 - tA-8 - tA10 - tAns

CS low to Valid Data In1) t39 SR –47+ tC

+ 2tA

–3TCL - 28

+ tC + 2tA

CS hold after RD, WR1) t40 CC 57 + tF–3TCL - 18

+ tF

–ns

ALE fall. edge to RdCS,

WrCS (with RW delay)

t42 CC 19 + tA–TCL - 6

+ tA

–ns

ALE fall. edge to RdCS,

WrCS (no RW delay)

t43 CC -6 + tA–-6

+ tA

–ns

Address float after RdCS,

WrCS (with RW delay)

t44 CC –0–0ns

Address float after RdCS,

WrCS (no RW delay)

t45 CC –25 –TCL ns

RdCS to Valid Data In

(with RW delay)

t46 SR –20 + tC–2TCL - 30

+ tC

RdCS to Valid Data In

(no RW delay)

t47 SR –45 + tC–3TCL - 30

+ tC

RdCS, WrCS Low Time

(with RW delay)

t48 CC 38 + tC–2TCL - 12

+ tC

–ns

RdCS, WrCS Low Time

(no RW delay)

t49 CC 63 + tC–3TCL - 12

+ tC

–ns

Multiplexed Bus (Reduced Supply Voltage Range) (cont’d)

(Operating Conditions apply)

ALE cycle time = 6 TCL + 2tA + tC + tF (150 ns at 20 MHz CPU clock without waitstates)

Parameter Symbol Max. CPU Clock

= 20 MHz

Variable CPU Clock

1 / 2TCL = 1 to 20 MHz

Unit

min. max. min. max.

C161K

C161O

Data Sheet 46 V2.0, 2001-01

Data valid to WrCS t50 CC 28 + tC–2TCL - 22

+ tC

–ns

Data hold after RdCS t51 SR 0 –0–ns

Data float after RdCS t52 SR –30 + tF–2TCL - 20

+ tF

Address hold after

RdCS, WrCS

t54 CC 30 + tF–2TCL - 20

+ tF

–ns

Data hold after WrCS t56 CC 30 + tF–2TCL - 20

+ tF

–ns

1) These parameters refer to the latched chip select signals (CSxL). The early chip select signals (CSxE) are

specified together with the address and signal BHE (see figures below).

Multiplexed Bus (Reduced Supply Voltage Range) (cont’d)

(Operating Conditions apply)

ALE cycle time = 6 TCL + 2tA + tC + tF (150 ns at 20 MHz CPU clock without waitstates)

Parameter Symbol Max. CPU Clock

= 20 MHz

Variable CPU Clock

1 / 2TCL = 1 to 20 MHz

Unit

min. max. min. max.

C161K

C161O

Data Sheet 47 V2.0, 2001-01

Figure 12 External Memory Cycle:

Multiplexed Bus, With Read/Write Delay, Normal ALE

Address

Data OUTAddress

Data INAddress

MCT04861

A21-A16

(A15-A8)

BHE, CSxE

ALE

CSxL

BUS

RdCSx

Read Cycle

BUS

Write Cycle

WR, WRL,

WRH

WrCSx

C161K

C161O

Data Sheet 48 V2.0, 2001-01

Figure 13 External Memory Cycle:

Multiplexed Bus, With Read/Write Delay, Extended ALE

Address

Data OUTAddress

Data IN

MCT04862

A21-A16

(A15-A8)

BHE, CSxE

ALE

CSxL

BUS

RdCSx

Read Cycle

BUS

Write Cycle

WR, WRL,

WRH

WrCSx

C161K

C161O

Data Sheet 49 V2.0, 2001-01

Figure 14 External Memory Cycle:

Multiplexed Bus, No Read/Write Delay, Normal ALE

Data OUT

Address

Data INAddress

MCT04863

A21-A16

(A15-A8)

BHE, CSxE

ALE

CSxL

BUS

RdCSx

Read Cycle

BUS

Write Cycle

WR, WRL,

WRH

WrCSx

C161K

C161O

Data Sheet 50 V2.0, 2001-01

Figure 15 External Memory Cycle:

Multiplexed Bus, No Read/Write Delay, Extended ALE

Address

Data OUTAddress

Data IN

MCT04864

A21-A16

(A15-A8)

BHE, CSxE

ALE

CSxL

BUS

RdCSx

Read Cycle

BUS

Write Cycle

t5t16 t25

t38

t39 t40

t27

t17

t7t19

t54

t18

t9t11

t43

t52

t51

t49

t23

t15

t47

t22 t56

WR, WRL,

WRH

WrCSx

t43 t49

t50

t13

t45

t13

t11

t45

C161K

C161O

Data Sheet 51 V2.0, 2001-01

AC Characteristics

Demultiplexed Bus (Standard Supply Voltage Range)

(Operating Conditions apply)

ALE cycle time = 4 TCL + 2tA + tC + tF (80 ns at 25 MHz CPU clock without waitstates)

Parameter Symbol Max. CPU Clock

= 25 MHz

Variable CPU Clock

1 / 2TCL = 1 to 25 MHz

Unit

min. max. min. max.

ALE high time t5CC 10 + tA–TCL - 10

+ tA

–ns

Address setup to ALE t6CC 4 + tA–TCL - 16

+ tA

–ns

ALE falling edge to RD,

WR (with RW-delay)

t8CC 10 + tA–TCL - 10

+ tA

–ns

ALE falling edge to RD,

WR (no RW-delay)

t9CC -10 + tA–-10

+ tA

–ns

RD, WR low time

(with RW-delay)

t12 CC 30 + tC–2TCL - 10

+ tC

–ns

RD, WR low time

(no RW-delay)

t13 CC 50 + tC–3TCL - 10

+ tC

–ns

RD to valid data in

(with RW-delay)

t14 SR –20 + tC–2TCL - 20

+ tC

RD to valid data in

(no RW-delay)

t15 SR –40 + tC–3TCL - 20

+ tC

ALE low to valid data in t16 SR –40 +

tA + tC

–3TCL - 20

+ tA + tC

Address to valid data in t17 SR –50 +

2tA + tC

–4TCL - 30

+ 2tA + tC

Data hold after RD

rising edge

t18 SR 0 –0–ns

Data float after RD rising

edge (with RW-delay1))

t20 SR –26 +

2tA + tF1) –2TCL - 14

+ 22tA

+ tF1)

Data float after RD rising

edge (no RW-delay1))

t21 SR –10 +

2tA + tF1) –TCL - 10

+ 22tA

+ tF1)

C161K

C161O

Data Sheet 52 V2.0, 2001-01

Data valid to WR t22 CC 20 + tC–2TCL - 20

+ tC

–ns

Data hold after WR t24 CC 10 + tF–TCL - 10

+ tF

–ns

ALE rising edge after

RD, WR

t26 CC -10 + tF–-10 + tF–ns

Address hold after WR2) t28 CC 0 + tF–0 + tF–ns

ALE falling edge to CS3) t38 CC -4 - tA10 - tA-4 - tA10 - tAns

CS low to Valid Data In3) t39 SR –40 +

tC + 2tA

–3TCL - 20

+ tC + 2tA

CS hold after RD, WR3) t41 CC 6 + tF–TCL - 14

+ tF

–ns

ALE falling edge to

RdCS, WrCS (with RW-

delay)

t42 CC 16 + tA–TCL - 4

+ tA

–ns

ALE falling edge to

RdCS, WrCS (no RW-

delay)

t43 CC -4 + tA–-4

+ tA

–ns

RdCS to Valid Data In

(with RW-delay)

t46 SR –16 + tC–2TCL - 24

+ tC

RdCS to Valid Data In

(no RW-delay)

t47 SR –36 + tC–3TCL - 24

+ tC

RdCS, WrCS Low Time

(with RW-delay)

t48 CC 30 + tC–2TCL - 10

+ tC

–ns

RdCS, WrCS Low Time

(no RW-delay)

t49 CC 50 + tC–3TCL - 10

+ tC

–ns

Data valid to WrCS t50 CC 26 + tC–2TCL - 14

+ tC

–ns

Data hold after RdCS t51 SR 0 –0–ns

Demultiplexed Bus (Standard Supply Voltage Range) (cont’d)

(Operating Conditions apply)

ALE cycle time = 4 TCL + 2tA + tC + tF (80 ns at 25 MHz CPU clock without waitstates)

Parameter Symbol Max. CPU Clock

= 25 MHz

Variable CPU Clock

1 / 2TCL = 1 to 25 MHz

Unit

min. max. min. max.

C161K

C161O

Data Sheet 53 V2.0, 2001-01

Data float after RdCS

(with RW-delay)1) t53 SR –20 + tF–2TCL - 20

+ 2tA + tF

Data float after RdCS

(no RW-delay)1) t68 SR –0 + tF–TCL - 20

+ 2tA + tF

Address hold after

RdCS, WrCS

t55 CC -6 + tF–-6 + tF–ns

Data hold after WrCS t57 CC 6 + tF–TCL - 14

+ tF

–ns

1) RW-delay and tA refer to the next following bus cycle (including an access to an on-chip X-Peripheral).

2) Read data are latched with the same clock edge that triggers the address change and the rising RD edge.

Therefore address changes before the end of RD have no impact on read cycles.

3) These parameters refer to the latched chip select signals (CSxL). The early chip select signals (CSxE) are

specified together with the address and signal BHE (see figures below).

Demultiplexed Bus (Standard Supply Voltage Range) (cont’d)

(Operating Conditions apply)

ALE cycle time = 4 TCL + 2tA + tC + tF (80 ns at 25 MHz CPU clock without waitstates)

Parameter Symbol Max. CPU Clock

= 25 MHz

Variable CPU Clock

1 / 2TCL = 1 to 25 MHz

Unit

min. max. min. max.

C161K

C161O

Data Sheet 54 V2.0, 2001-01

AC Characteristics

Demultiplexed Bus (Reduced Supply Voltage Range)

(Operating Conditions apply)

ALE cycle time = 4 TCL + 2tA + tC + tF (100 ns at 20 MHz CPU clock without waitstates)

Parameter Symbol Max. CPU Clock

= 20 MHz

Variable CPU Clock

1 / 2TCL = 1 to 20 MHz

Unit

min. max. min. max.

ALE high time t5CC 11 + tA–TCL - 14

+ tA

–ns

Address setup to ALE t6CC 5 + tA–TCL - 20

+ tA

–ns

ALE falling edge to RD,

WR (with RW-delay)

t8CC 15 + tA–TCL - 10

+ tA

–ns

ALE falling edge to RD,

WR (no RW-delay)

t9CC -10 + tA–-10

+ tA

–ns

RD, WR low time

(with RW-delay)

t12 CC 34 + tC–2TCL - 16

+ tC

–ns

RD, WR low time

(no RW-delay)

t13 CC 59 + tC–3TCL - 16

+ tC

–ns

RD to valid data in

(with RW-delay)

t14 SR –22 + tC–2TCL - 28

+ tC

RD to valid data in

(no RW-delay)

t15 SR –47 + tC–3TCL - 28

+ tC

ALE low to valid data in t16 SR –45 +

tA + tC

–3TCL - 30

+ tA + tC

Address to valid data in t17 SR –57 +

2tA + tC

–4TCL - 43

+ 2tA + tC

Data hold after RD

rising edge

t18 SR 0 –0–ns

Data float after RD rising

edge (with RW-delay1))

t20 SR –36 +

2tA + tF1) –2TCL - 14

+ 22tA

+ tF1)

Data float after RD rising

edge (no RW-delay1))

t21 SR –15 +

2tA + tF1) –TCL - 10

+ 22tA

+ tF1)

C161K

C161O

Data Sheet 55 V2.0, 2001-01

Data valid to WR t22 CC 24 + tC–2TCL - 26

+ tC

–ns

Data hold after WR t24 CC 15 + tF–TCL - 10

+ tF

–ns

ALE rising edge after

RD, WR

t26 CC -12 + tF–-12 + tF–ns

Address hold after WR2) t28 CC 0 + tF–0 + tF–ns

ALE falling edge to CS3) t38 CC -8 - tA10 - tA-8 - tA10 - tAns

CS low to Valid Data In3) t39 SR –47 +

tC + 2tA

–3TCL - 28

+ tC + 2tA

CS hold after RD, WR3) t41 CC 9 + tF–TCL - 16

+ tF

–ns

ALE falling edge to

RdCS, WrCS (with RW-

delay)

t42 CC 19 + tA–TCL - 6

+ tA

–ns

ALE falling edge to

RdCS, WrCS (no RW-

delay)

t43 CC -6 + tA–-6

+ tA

–ns

RdCS to Valid Data In

(with RW-delay)

t46 SR –20 + tC–2TCL - 30

+ tC

RdCS to Valid Data In

(no RW-delay)

t47 SR –45 + tC–3TCL - 30

+ tC

RdCS, WrCS Low Time

(with RW-delay)

t48 CC 38 + tC–2TCL - 12

+ tC

–ns

RdCS, WrCS Low Time

(no RW-delay)

t49 CC 63 + tC–3TCL - 12

+ tC

–ns

Data valid to WrCS t50 CC 28 + tC–2TCL - 22

+ tC

–ns

Data hold after RdCS t51 SR 0 –0–ns

Demultiplexed Bus (Reduced Supply Voltage Range) (cont’d)

(Operating Conditions apply)

ALE cycle time = 4 TCL + 2tA + tC + tF (100 ns at 20 MHz CPU clock without waitstates)

Parameter Symbol Max. CPU Clock

= 20 MHz

Variable CPU Clock

1 / 2TCL = 1 to 20 MHz

Unit

min. max. min. max.

C161K

C161O

Data Sheet 56 V2.0, 2001-01

Data float after RdCS

(with RW-delay)1) t53 SR –30 + tF–2TCL - 20

+ 2tA + tF

Data float after RdCS

(no RW-delay)1) t68 SR –5 + tF–TCL - 20

+ 2tA + tF

Address hold after

RdCS, WrCS

t55 CC -16 + tF–-16 + tF–ns

Data hold after WrCS t57 CC 9 + tF–TCL - 16

+ tF

–ns

1) RW-delay and tA refer to the next following bus cycle (including an access to an on-chip X-Peripheral).

2) Read data are latched with the same clock edge that triggers the address change and the rising RD edge.

Therefore address changes before the end of RD have no impact on read cycles.

3) These parameters refer to the latched chip select signals (CSxL). The early chip select signals (CSxE) are

specified together with the address and signal BHE (see figures below).

Demultiplexed Bus (Reduced Supply Voltage Range) (cont’d)

(Operating Conditions apply)

ALE cycle time = 4 TCL + 2tA + tC + tF (100 ns at 20 MHz CPU clock without waitstates)

Parameter Symbol Max. CPU Clock

= 20 MHz

Variable CPU Clock

1 / 2TCL = 1 to 20 MHz

Unit

min. max. min. max.

C161K

C161O

Data Sheet 57 V2.0, 2001-01

Figure 16 External Memory Cycle:

Demultiplexed Bus, With Read/Write Delay, Normal ALE

Data OUT

Address

Data IN

MCT04865

A21-A16

A15-A0

BHE, CSxE

ALE

CSxL

RdCSx

Read Cycle

Write Cycle

WR, WRL,

WRH

WrCSx

BUS

(D15-D8)

D7-D0

BUS

(D15-D8)

D7-D0

C161K

C161O

Data Sheet 58 V2.0, 2001-01

Figure 17 External Memory Cycle:

Demultiplexed Bus, With Read/Write Delay, Extended ALE

Address

Data OUT

Data IN

MCT04866

A21-A16

A15-A0

BHE, CSxE

ALE

CSxL

RdCSx

Read Cycle

Write Cycle

WR, WRL,

WRH

WrCSx

BUS

(D15-D8)

D7-D0

BUS

(D15-D8)

D7-D0

C161K

C161O

Data Sheet 59 V2.0, 2001-01

Figure 18 External Memory Cycle:

Demultiplexed Bus, No Read/Write Delay, Normal ALE

Data OUT

Address

Data IN

MCT04867

A21-A16

A15-A0

BHE, CSxE

ALE

CSxL

RdCSx

Read Cycle

Write Cycle

WR, WRL,

WRH

WrCSx

BUS

(D15-D8)

D7-D0

BUS

(D15-D8)

D7-D0

C161K

C161O

Data Sheet 60 V2.0, 2001-01

Figure 19 External Memory Cycle:

Demultiplexed Bus, No Read/Write Delay, Extended ALE

Address

Data OUT

Data IN

MCT04868

A21-A16

A15-A0

BHE, CSxE

ALE

CSxL

RdCSx

Read Cycle

Write Cycle

WR, WRL,

WRH

WrCSx

BUS

(D15-D8)

D7-D0

BUS

(D15-D8)

D7-D0

C161K

C161O

Data Sheet 61 V2.0, 2001-01

Package Outlines

0.65

0.3

12.35

0.1

2.45 max

Index Marking

17.2

0.25 min

+0.1

0.88

0.6x45˚

1) Does not include plastic or metal protrusions of 0.25 max per side

A-B

0.2

A-B

0.2

80x

0.12 80x

A-B

17.2 -0.05

7˚max

-0.02

+0.08

0.15

±0.08

P-MQFP-80-1 (SMD)

(Plastic Metric Quad Flat Package)

GPR05249

Sorts of Packing

Package outlines for tubes, trays etc. are contained in our

Data Book “Package Information”.

Dimensions in mm

SMD = Surface Mounted Device

http://www.infineon.com

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thereby, less frustration and more satisfaction.”

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Home > Microcontrollers > 16-Bit Microcontrollers > C166® Family > C161K, C161O

C161K, C161O

The Basic 16-bit Microcontro llers

C161K/O members of the C166 family offer all benefits of a full 16-bi t micro c on tro l ler at the average price of an 8-bit controller. The C161 product range is focused on price

sensitive applications such as in consumer products. Grouped around th e 25 MHz C166 core a variety of basic peripherals have been chosen for optimal product and

system costs.

Development Tools, Software and Training

SK-161 Starter Kit

Product Type List

Product Type /

Datasheet Order Info Packages Green Max Clock

Frequency SRAM (incl.

Cache) CAN

Nodes A / D input lines (incl.

FADC) Program

Memory

Matching Results: 6

20.0 MHz

1.0 KByte

2.0 KByte

0 0.0 KByte

reset all selections reset reset reset reset reset

SAB-C161O-LM in

production PG-MQFP-

20.0 MHz 2.0 KByte 0 0 0.0 KByte

SAF-C161O-LM in

production PG-MQFP-

80 20.0 MHz 2.0 KByte 0 0 0.0 KByte

e 1 o f 2C161K, C161O - Infineon Technolo

ies

09-Oct-2007htt

://www.infineon.com/cms/en/

roduct/channel.html?channel=ff80808112ab681d0112ab6b310c0761

Usage Terms - Imprint - Contact - Privacy Policy

SAB-C161O-LM 3V HA in

production PG-MQFP-

20.0 MHz 2.0 KByte 0 0 0.0 KByte

SAF-C161O-LM 3V HA in

production PG-MQFP-

20.0 MHz 2.0 KByte 0 0 0.0 KByte

SAB-C161K-LM HA in

production P-MQFP-80 20.0 MHz 1.0 KByte 0 0 0.0 KByte

SAF-C161K-LM in

production PG-MQFP-

20.0 MHz 1.0 KByte 0 0 0.0 KByte

e 2 o f 2C161K, C161O - Infineon Technolo

ies

09-Oct-2007htt

://www.infineon.com/cms/en/

roduct/channel.html?channel=ff80808112ab681d0112ab6b310c0761