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.

• 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)