From BitWizard WIKI
This is the documentation page for the FTDI-atmega PCB.
The FTDI-atmega PCB has an USB connector and a 20-pin IO connector. The brains of the PCB is an ATmega168 chip.
The 20 pin connector is connected as follows
- led1 is connected to VCC
- led2 is connected to CBUS0 (FT232RL)
- led3 is connected to CBUS1 (FT232RL)
- led4 is connected to PC5
- led5 is connected to PC4
This section describes how you get your program into the processor.
The chip is an ATmega168. http://www.atmel.com/dyn/resources/prod_documents/doc2545.pdf