Introduction - If you have any usage issues, please Google them yourself
C8051F020 AD sampling and serial port test program, AD input terminal (J7) to enter the 8-channel AD (AIN0- AIN7), while a measurable way on-chip temperature, 9 Lu sampled values through serial port (using the serial port must be JP3 of 1,2 and 3,4 pin short-circuit) to send out the serial port debugging assistant point of view to observe its value. 8-channel AD input AIN7 can jump to device (JP1) " ADC" (1,2 feet shorter then) and the on-board potentiometer connected by manually adjusted the value of VR1 can be observed voltage changes.