CPU为CSP8051F020，有两个串口和一个SPI口。
一个串口通过数传电台和中控室计算机通信 另一个串口和PLC的MODBUS口通信。
SPI口控制数码管的显示。
已经在工程上应用。-CPU for CSP8051F020, two serial and one SPI mouth. A serial data transfer through the radio and the computer control room of another serial communications and MODBUS PLC Communication. I SPI digital control of the show. In engineering applications.
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