33.2 Features

The following are key features of the SERCOM module:

Interface for configuring into one of the following:
- Inter-Integrated Circuit (I²C) Two-wire Serial Interface
- System Management Bus (SMBus™) compatible
- Serial Peripheral Interface (SPI)
- Universal Synchronous/Asynchronous Receiver/Transmitter (USART)
Baud-rate generator
Address match/mask logic
Operational in all Sleep modes with an external clock source
Can be used with DMA
Receive buffer: 8-bytes FIFO
Transmit buffer: 8-bytes FIFO
32-bit extension for better system bus utilization
Secure pin multiplexing to isolate on dedicated I/O pins a secured communication with external devices from the non-secure application (PIC32CM LS00 only)

The following table lists the supported features for each SERCOM instance:

Table 33-1. SERCOM Features Summary (PIC32CM LE00 and PIC32CM LS00)
Protocol	SERCOM Instance
Protocol	SERCOM0	SERCOM1	SERCOM2	SERCOM3	SERCOM4	SERCOM5
SPI	Yes
USART	Yes
I²C	Yes	Yes	Yes	Yes⁽¹⁾	Yes	Yes⁽¹⁾
Secure Pin Multiplexing (PIC32CM LS00 only)	No	Yes	No	No	No	No

Note:

I²C is not supported on SERCOM3 and SERCOM5 for 48-pin packages. Refer to the Pinout for more information.
SERCOM3, SERCOM4, and SERCOM5 are not present on the PIC32CM1216 devices.

Note:

I²C is not supported on SERCOM3 and SERCOM5 for 48-pin packages. Refer to the Pinout for more information.