Introduction
The C167CS-xC derivatives are high performance derivatives of the Infineon C166 Family of full featured single-chip CMOS microcontrollers. They combine high CPU performance (up to 16.5 million instructions per second) with high peripheral functionality and enhanced IO-capabilities. They also provide clock generation via PLL and various on-chip memory modules such as program ROM, internal RAM, and extension RAM.

C167CS-xC
• High Performance 16-bit CPU with 4-Stage Pipeline
   – 80/60 ns Instruction Cycle Time at 25/33 MHz CPU Clock
   – 400/303 ns Multiplication (16 × 16 bit), 800/606 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 56 Sources, Sample-Rate down to 40/30 ns
• 8-Channel Interrupt-Driven Single-Cycle Data Transfer Facilities via Peripheral Event Controller (PEC)
• Clock Generation via on-chip PLL (factors 1:1.5/2/2.5/3/4/5), via prescaler or via direct clock input
• On-Chip Memory Modules
   – 3 KBytes On-Chip Internal RAM (IRAM)
   – 8 KBytes On-Chip Extension RAM (XRAM)
   – 32 KBytes On-Chip Program Mask ROM
• On-Chip Peripheral Modules
   – 24-Channel 10-bit A/D Converter with Programmable Conversion Time down to 7.8 µs
   – Two 16-Channel Capture/Compare Units
   – 4-Channel PWM Unit
   – Two Multi-Functional General Purpose Timer Units with 5 Timers
   – Two Serial Channels (Synchronous/Asynchronous and High-Speed-Synchronous)
   – Two On-Chip CAN Interfaces (Rev. 2.0B active) with 2 × 15 Message Objects (Full CAN/Basic CAN), can work on one bus with 30 objects
   – On-Chip Real Time Clock
• Up to 16 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
   – Five Programmable Chip-Select Signals
   – Hold- and Hold-Acknowledge Bus Arbitration Support
• Idle, Sleep, and Power Down Modes with Flexible Power Management
• Programmable Watchdog Timer and Oscillator Watchdog
• Up to 111 General Purpose I/O Lines, partly with Selectable Input Thresholds and Hysteresis
• 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