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:
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.