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.DEVSEL Device
0x0 L22N18
0x1 L22N17
0x2 L22N16
0x3-0x4 Reserved
0x5 L22J18
0x6 L22J17
0x7 L22J16
0x8-0x9 Reserved
0xA L22G18
0xB L22G17
0xC L22G16
0xD-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.