2.4 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 L22 variants have a reset value of DID=0x10820xxx, with the last digits identifying the variant:

Table 2-4. SAM L22 Device Identification Values
DSU DID.DEVSELDevice
0x0L22N18
0x1L22N17
0x2L22N16
0x3-0x4Reserved
0x5L22J18
0x6L22J17
0x7L22J16
0x8-0x9Reserved
0xAL22G18
0xBL22G17
0xCL22G16
0xD-0xFFReserved
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.