STEVAL-PCC009V4演示板实现了对串行隔离接口通信的通用USB接口。它是指需要从PC到应用板安全连接所有的应用程序。The STEVAL-PCC009V4 demonstration board implements a universal USB on the serial isolated interface communication. It is useful in all applications which need safe connection from PC to the application boards.The STEVAL-PCC009V4 has a 16-pin communication interface which allows connecting a device that uses I2C, SPI or UART protocols. Thus, the board functions as a bridge between a serial communication based device and a PC.