34.4 Signal Description
| Signal Name | Type | Description |
|---|---|---|
| PAD[0] | Digital I/O | SDA |
| PAD[1] | Digital I/O | SCL |
| PAD[2] | Digital I/O | SDA_OUT (Four-wire operation) |
| PAD[3] | Digital I/O | SCL_OUT (Four-wire operation) |
I2C pins on SERCOM are fixed pins and not configurable through PPS functionality. See I/O Ports and Peripheral Pin Select (PPS) from Related Links.