This document is about the user manual of Gigaset SL400/SL400A phone
The C504 is a modified and extended version of the C501 microcontroller, designed for motor‑control applications and compatible with SAB 80C52/C501 devices. Variants include the C504‑2R with non‑volatile program memory, the C504‑L without on‑chip program memory, and the C504‑2E OTP version.
This manual covers pin configuration, memory organization, on‑chip peripherals such as timers, capture/compare units, serial interface, A/D converter, interrupt system, power‑saving modes, and OTP memory operation, providing detailed register descriptions and timing diagrams.