ADuC812是美国AD公司推出的高性能单片机，具有集成度高、资源丰富等特点。

(1) 基于8051的内核，指令系统与8051兼容，额定工作频率12MHz。

(2) 8KB片内闪速/电擦除程序存储器 640B片内闪速/电擦除数据存储器 256B片内数据RAM。

(3) 3个16位的定时器/计数器 32根可编程I/O线 9个中断源，2个优先级。

(4) 1个8通道，高精度12位ADC 2个12位电压输出DAC。

(5) 1个片内温度传感器。

(6) 采用3V、5V电压工作 具有正常、待机和掉电三种工作模式。

(7) 1个通用UART串行I/O 1个与I2C兼容的两线串口和SPI串口 1个看门狗定时器(WDT) 1个电源监视器(PSM)。-ADuC812 is AD Launches the United States, high-performance single-chip, high integration and rich in resources and so on. (1) Based on the 8051 core 8051 compatible instruction set with a rated operating frequency of 12MHz. (2) 8KB-chip Flash/EE program memory　640B-chip Flash/EE data memory　256B-chip data RAM. (3) three 16-bit timer/counter　32 programmable I/O lines　9 interrupt sources, two priority. (4) an 8-channel, high-precision 12-bit ADC　2 12-bit voltage output DAC. (5) a-chip temperature sensor. (6) the use of 3V, 5V voltage　with normal, standby and power-down mode of the three. (7) a generic UART serial I/O　1 with I2C-compatible two-wire SPI serial port and serial port　a watchdog timer (WDT)　1 power supply monitor (PSM).