This manual provides specifications, pin configurations, programming information and usage details for the STC89C51RC/RD+ series microcontrollers.
The STC89C51RC/RD+ series are 8051‑compatible microcontrollers offering a range of flash, SRAM and EEPROM capacities. They are supplied in several package types and support a wide operating voltage range.
The document covers pin‑out tables, memory maps, peripheral functions (UART, timers, ADC, PWM), power‑down and reset modes, as well as programming methods using STC‑ISP/IAP. Detailed electrical characteristics and SFR mappings are also included. This manual is written in Chinese.
| Operating Voltage | 5.5 V – 3.4 V |
|---|---|
| SRAM | 512 bytes |
| EEPROM / Data Flash | 1280 bytes |
| Package Types | DIP‑40, PLCC‑44, PQFP‑44 |
The device works from 5.5 V down to 3.4 V.
They are available in DIP‑40, PLCC‑44 and PQFP‑44 packages.