4.3.4 CAN

ATSAMC21J18A has two CAN modules that performs communication according to ISO11898-1 (Bosch CAN specification 2.0 part A,B) and Bosch CAN FD specification V1.0.

CAN0 is connected to an on-board ATA6561 CAN physical-layer transceiver. Table 4-17 shows connections between the ATSAMC21J18A and the ATA6561.

The CAN differential signals are connected to a 1 x 2, 100 mil pin-header labeled CAN.

Table 4-17. ATA6561 Connections
SAM C21pinFunctionATA6561 functionShared functionality
PA24CAN0TXTXD-
PA25CAN0RXRXD-
Table 4-18. CAN Header
CAN header pinFunction
1CANH
2CANL