PIC USB interface based on FT245

PIC USB interface and FT245

This is a simple design that uses the FTDI FT245 USB FIFO device to connect the PIC 16F877 microcontroller to the USB bus. It employs a simple single-sided PCB design with only one surface-mount device, the USB chip itself. All schematics, PCB layouts, and software will be available for download.

As described, this design uses the FTDI FT245BM USB FIFO device. This component handles all the details of communication via the USB bus, requiring only a simple 1K-bit serial EEPROM to store some USB configuration information, and then you're ready to go.