Mo & Terry Smedley


I2C Plug-in Adapter for 8255 Socket

This board plugs the PCA9665 I2C controller chip into an existing 8255 socket.  An 8255 is not used in any way - the socket is just used to grab the data and control signals from the bus.  SMD chips are used to keep the above-board space requirements low.  The board has been tested with the ECS PC-12/A and Collado 82C55 PPIO card.