8.7 SIGROW - Signature Row

The content of the Signature Row (SIGROW) fuses is pre-programmed and cannot be altered. SIGROW holds information like device ID, serial number, and calibration values.

All the AVR32EB14/20/28/32 devices have a three-byte device ID identifying the device. This device ID can be read using the UPDI interface, even if the device is locked. The three bytes reside in the Signature Row. The following table shows the signature bytes.

Table 8-4. Device ID
Device NameSignature Bytes Address
0x000x010x02
AVR32EB140x1E0x950x2D
AVR32EB200x1E0x950x2C
AVR32EB280x1E0x950x2B
AVR32EB320x1E0x950x2A