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This is the documentation page for the FT4222h breakout board. That you can buy in the BitWizard shop.


The FT4222h breakout board has an USB connector, two SPI connectors, one I2C connector one CNF connector and one 14-pin IO connector. The brains of the PCB, of course, is an FT4222h chip.

External resources


See SPI connector pinout for the pinout of the SPI connectors.



  • The only LED is a power LED

Jumper settings

The FT4222H chip provides a low-power 3.3V output voltage. You can chose to provide that 3.3V or the 5V from the USB on the SPI and I2C connectors. This is a solder jumper. We default the jumper to 5V with a small trace on the PCB.

The CNF jumpers allow you to configure the DNCFx signals on the FT4222H. Put the jumper near you (if the USB is on the left) for a 0 and away from you for a 1. DCNF1 is on the left, DCNF0 is on the right.

future hardware enhancements



  • Initial public release