针对德国ACAM公司的TDC_GP2芯片写的80C51单片机开发源程序，包括六个寄存器的正确配置，SPI、串口等通信。非常好，已调试成功，通过串口调试助手即可直接接收到时差数据。测量范围2:500ns-4ms。只需改变寄存器1即可实现测量范围1:0-500ns的测量。-TDC to Germany ACAM companies GP2 chip 80 c51 source program development, including the correct configuration of the six register, SPI, serial port communication, etc. Very good, have been debug successful, via a serial port debugging assistants can receive directly to the time difference data. Measuring range known 0 ns- 4 ms. Only need to change the register 1 1-0-500 ns the scope of measurement can be realized.