7.7 SIGROW - Signature Row

The content of the Signature Row (SIGROW) fuses is preprogrammed and read-only. SIGROW contains information as device ID, serial number, and calibration values.

All the AVR32/16DU32/28/20/14 devices have a device ID to identify family, Flash size, and pin count. The device ID consists of three DEVICEIDn bytes, as shown in the following table.

Table 7-4. Device ID
Device NameSignature Byte Address and Value
0x000x010x02
AVR32DU320x1E0x950x3F
AVR32DU280x1E0x950x40
AVR32DU200x1E0x950x4E
AVR32DU140x1E0x950x4F
AVR16DU320x1E0x940x38
AVR16DU280x1E0x940x39
AVR16DU200x1E0x940x3A
AVR16DU140x1E0x940x3B