6.2.3 SERCOM USART and I²C Configurations

The SAM L22 has up to six instances of the serial communication interface (SERCOM) peripheral. The following table lists the supported communication protocols for each SERCOM instance.

Table 6-5. SERCOM USART and I²C Protocols
	SERCOM Instance
Protocol	SERCOM0	SERCOM1	SERCOM2	SERCOM3	SERCOM4	SERCOM5
I²C	no	yes	yes	yes	yes	yes
I²C at 3.4MHz	no	yes	no	no	no	yes
USART including RS485 and ISO 7816	yes	yes	yes	yes	yes	yes
SPI	yes	yes	yes	yes	yes	yes

Note: Not all available I²C pins support I²C mode at 3.4MHz.

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6.2.3 SERCOM USART and I2C Configurations

6.2.3 SERCOM USART and I²C Configurations