37.4 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 (4-wire operation)
PAD[3]	Digital I/O	SCL_OUT (4-wire operation)

One signal can be mapped on several pins.

Important: Not all the pins are I²C pins.

The following table lists the SERCOM pins which support I²C:

Table 37-1. SERCOM I²C Pins
Pin Name	SERCOM0 I²C Pad Name	SERCOM1 I²C Pad Name
PA16	SERCOM0/PAD[0]	SERCOM1/PAD[0]
PA17	SERCOM0/PAD[1]	SERCOM1/PAD[1]
PA22	SERCOM0/PAD[0]	N/A
PA23	SERCOM0/PAD[1]	N/A

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