This is the datasheet for the C161S single-chip microcontroller released by Infineon Technologies AG. The microcontroller adopts a 16-bit RISC architecture and has a maximum operating frequency of 100MHz. It has 16KB of on-chip RAM and 32KB of on-chip ROM.
The C161S is a 16‑bit single‑chip microcontroller from Infineon Technologies featuring a high‑performance CPU with a 4‑stage pipeline, up to 25 MHz operation, and extensive peripheral modules such as timers, serial channels, and a real‑time clock. It provides a 16‑priority‑level interrupt system, on‑chip PLL clock generation, and flexible power‑management modes.
The device is offered in an 80‑pin MQFP package and is available in several temperature‑range derivatives (e.g., SAB‑C161S‑L25M, SAF‑C161S‑LM3V). Ordering codes identify the specific derivative, package, and delivery type. The C161S can be powered from 5 V or 3 V supplies and supports up to 63 general‑purpose I/O lines.
| Instruction cycle time | 80 ns at 25 MHz |
|---|---|
| Multiplication time | 400 ns (16 × 16 bit) |
| Division time | 800 ns (32 ÷ 16 bit) |
| On‑chip RAM | 2 KB internal RAM |
| Special function registers | 1024 bytes |
| Interrupt system | 16 priority levels, 30 sources |
| Package type | 80‑Pin MQFP |
| Operating voltage | 3 V – 5 V |
| General‑purpose I/O lines | Up to 63 |
The C161S can operate from a 5 V or a 3 V power supply.
It provides up to 63 general‑purpose I/O lines.
The microcontroller is offered in an 80‑pin MQFP package.
The instruction cycle time is 80 ns at a 25 MHz CPU clock.