This document is a user manual for the C509-L 8-bit CMOS microcontroller produced by Siemens AG. The manual provides information about the type of component, but does not guarantee its characteristics. The document also mentions that Siemens AG is an approved CECC manufacturer and provides information about packaging and component usage.
The C509-L is a high‑end 8‑bit CMOS microcontroller in Siemens' SAB‑C500 family, based on the 8051 architecture and offering enhanced peripheral features, a 16 MHz CPU clock, and up to 3 KB of XRAM. It is supplied in a P‑MQFP‑100‑2 package.
The document covers pin configuration, memory organization, external bus interface, reset and clock operation, on‑chip peripherals (ports, timers, ADC, serial interfaces), interrupt system, watchdog timer, power‑saving modes, bootstrap loader, and device specifications such as absolute maximum ratings and electrical characteristics.