Device Identification

The DSU - Device Service Unit peripheral provides the Device Selection bits in the Device Identification register (DID.DEVSEL) in order to identify the device by software. The SAM C20 variants have a reset value of DID=0x1101drxx, with the LSB identifying the die number ('d'), the die revision ('r') and the device selection ('xx').

Table 1. SAM C20 Device Identification Values
DEVSEL (DID[7:0])	Device
0x00	SAM C20J18A
0x01	SAM C20J17A
0x02	SAM C20J16A
0x03	SAM C20J15A
0x04	Reserved
0x05	SAM C20G18A
0x06	SAM C20G17A
0x07	SAM C20G16A
0x08	SAM C20G15A
0x09	Reserved
0x0A	SAM C20E18A
0x0B	SAM C20E17A
0x0C	SAM C20E16A
0x0D	SAM C20E15A
0x0E-0xFF	Reserved

Note: The device variant (last letter of the ordering number) is independent of the die revision (DSU.DID.REVISION): The device variant denotes functional differences, whereas the die revision marks evolution of the die.