3.3 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 R30 variants have a reset value of DID=0x1081drxx, with the LSB identifying the die number ('d'), the die revision ('r') and the device selection ('xx').

Table 3-3. SAM R30 Device Identification Values
DEVSEL (DID[7:0])	Device
0x1081021E	SAM R30G18A
0x1081021F	SAM R30E18A

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.