8.7 SIGROW - Signature Row

The content of the Signature Row (SIGROW) fuses are preprogrammed and cannot be altered. SIGROW holds the Device ID, serial number, and calibration values.

All AVR32LA14/20/28/32 devices have a three-byte Device ID that identifies the device. This Device ID can be read using the UPDI interface, even when the device is locked. The three bytes reside in the Signature Row. The signature bytes are given in the following table.

Table 8-4. Device ID
Device NameSignature Bytes Address
0x000x010x02
AVR32LA140x1E0x950x29
AVR32LA200x1E0x950x60
AVR32LA280x1E0x950x59
AVR32LA320x1E0x950x58