STC12C5204AD单片机ad采样输出pwm并将ad的值通过串口发送给上位机，有原理图，-STC12C5204AD SCM ad sample output pwm and ad value to send to the host computer through the serial port schematic

STC12C5204AD单片机PWM输出程序，利用自带的PWM输出，即P3.7口输出PWM波，PWm频率为3.6K，可以通过串口来修改PWM波的占空比，PWM输出0-5V，精度为0.1V，在实验板上验证通过。-STC12C5204AD microcontroller PWM output procedures, the use of built-in PWM output, PWM output is P3.7 mouth, PWm frequency is 3.6K, through the

STC12C5204AD单片机开发板上实现modbus协议，通过协议可以返回电压转换及lm35获取的温度，并设置PWM占空比，设置EEPROm中数据，06模式支持广播模式，在3块单片机开发板联合的情况下试验通过 -STC12C5204AD microcontroller development boards implement modbus protocol, protocol can be returned by the voltage conversion and lm35 to obt

STC12C5204AD单片机实现PWM调制音频的C语言程序例子-STC12C5204AD MCU PWM modulation audio examples of the C language program