31.2 Overview

The inter-integrated circuit (I²C) interface is one of the available modes in the Serial Communication Interface (SERCOM).

A SERCOM instance can be configured to operate either as an I²C host or an I²C client as shown in Figure 31-1.

Both host and client have an interface containing a shift register, a transmit buffer and a receive buffer. In addition, the I²C host uses the SERCOM baud rate generator, while the I²C client uses the SERCOM address match logic.

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