This datasheet provides specifications, pin configurations, and key features for the STC89C51RC/ RD+ series of 8051‑based microcontrollers.
The STC89C51RC/ RD+ series are 8051‑compatible microcontrollers offering up to 80 MHz CPU speed, on‑chip flash, SRAM, and a rich set of peripherals. They are supplied in multiple package types and support both ISP and IAP programming modes.
Key specifications include a wide operating voltage range, various memory sizes, and extensive I/O options, making the devices suitable for a broad range of embedded applications. This manual is written in Chinese.
| Operating Voltage | 5.5 V – 3.4 V |
|---|---|
| SRAM | 1280 bytes |
| Package Types | DIP‑40, PLCC‑44, PQFP‑44 |
| Package Types | DIP‑40, PLCC‑44, PQFP‑44 |
The devices operate from 5.5 V down to 3.4 V.