This document introduces the features and characteristics of the STC12C series microcontroller devices, including high speed, high reliability, low power consumption, ultra-low price, strong anti-static and anti-interference capabilities. MCU-Memory is the supplier of this series of microcontrollers, committed to providing high-performance microcontroller technology for the Chinese market.
The STC12C2052AD series is a high‑speed, low‑power 1T/7‑cycle 8051‑compatible microcontroller offering up to 12× the speed of a standard 8051. It features integrated peripherals such as ADC, PWM, timers, UART and flash memory, making it suitable for a wide range of embedded applications.
The document includes detailed pin‑out diagrams, package dimensions, electrical specifications, programming methods (ISP/IAP, UART/RS‑232), and typical application circuits. Tables list model variants, memory sizes, I/O counts and available packages. This manual is written in Chinese.
| CPU core | 1T and 7 machine cycles |
|---|---|
| Operating voltage | 3.4‑5.5 V (2.0‑3.8 V for LE series) |
| Flash memory | 1 KB – 12 KB (varies by model) |
| RAM | 256 bytes internal RAM |
| ADC | 8‑channel 8‑bit ADC |
| Timers | 2 × 16‑bit timers |
| Operating temperature | -40 °C – +85 °C |
| Maximum frequency | 0 – 35 MHz (equivalent to 0 – 420 MHz 8051) |
| I/O pins | Up to 23 I/O pins (depending on package) |
The device offers up to 23 I/O pins in the PP‑28/SOP‑28 packages and up to 27 pins in the PLCC‑32 package.
The microcontroller operates up to 35 MHz, which corresponds to 0‑420 MHz when compared to a standard 8051.
Available packages include PDIP‑20, SOP‑20, and TSSOP‑20 (also referred to as TSSCP‑20).