C161K/O members of the C166 family offer all benefits of a full 16-bit microcontroller 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 the 25 MHz C166 core a variety of basic peripherals have been chosen for optimal product and system costs.

Key Features:

• High Performance 16-bit CPU with 4-stage pipeline
• 80 ns Instruction Cycle Time at 25 MHz CPU Clock
• 400 ns Multiplication (16 x 16 bit) 800 ns Division (32/16 bit)
• Clock Generation via Prescaler or via Direct Clock Input
• 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
• Up to 4 MBytes Linear Address Space for Code and Data
• Up to 2 KBytes On-Chip RAM
• Programmable External Bus Characteristics for Different Address Ranges
• 8-bit or 16-bit External Data Bus
• Multiplexed or Demultiplexed External Address/Data Buses
• Programmable Chip-Select Signals
• 1024 Bytes On-Chip Special Function Register Area
• Idle and Power Down Modes
• 8-Channel Interrupt-Driven Single-Cycle Data Transfer Facilities via Peripheral Event Controller (PEC)
• 16-Priority-Level Interrupt System with 20 Sources, (14 Sources on C161K)
• Multi-Functional General Purpose Timer Units with up to five 16-bit Timers
• Two Serial Channels (Synchronous/Asynchronous and High-Speed-Synchronous)
• Programmable Watchdog Timer
• Up to 63 General Purpose I/O Lines
• On-Chip Bootstrap-Loader
• 3 V Operation at max. CPU Clock of 20 MHz (C161O-LM 3 V only)
• Supported by large Range of Development Tools including C-Compilers, Makro-Assembler
Packages, Real-Time Operating Systems, Emulators, Evaluation boards, HLL-Debuggers, Simulators, Logic Analyzers Disassemblers, Programming Boards
• 80-Pin MQFP Green Package