Technical manual for the STC89C51RC/RD+ 8051‑compatible microcontroller covering specifications, pinout, programming and operation.
This manual provides detailed information on the STC89C51RC/RD+ series of 8051‑compatible microcontrollers. It includes the CPU core description, memory map, electrical characteristics, package options and full register reference.
The document also explains how to program the device using ISP/IAP with the STC‑ISP software, describes UART/RS‑232 communication settings, and gives guidance on power‑up, reset and clock configuration for reliable operation. This manual is written in Chinese.