I2C Expansion Board

[khgoh]

Hi,
This is the schematic  for the i2c POT board.

The summary of the connection are as below,
PH2,PH3 - SCL1/SDA1 connected to Connector below,
With 4pin Connector, CN1, CN2, CN3, CN4
With 5pin Connector, CN5, CN6
PH5 - Interrupt pin on CN5
PH6 - Interrupt pin on CN6


PL8,PL9 - TWI-SCL/TWI-SDA  connected to Connector below,
With 4pin Connector CN7, CN8, CN9, CN10
With 5pin Connector CN11, CN12

PC5 - Interrupt pin on CN11
PC9 - Interrupt pin on CN12

The interrupt pin on the 5 pin connector is to allow the I2c device to interrupt the Host when the device has new information for the Host to read. eg. the Ambient Light Sensor.
The pull-up enable that I wrote has already enable all the above I/O pin.

Regards,
KH Goh