7.7 SIGROW - Signature Row

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

All the AVR64DA28/32/48/64(S) devices have a three-byte device ID that identifies the device. The device ID can be read using the Unified Program and Debug Interface (UPDI), also when a device is locked. The device ID for the AVR64DA28/32/48/64(S) devices consists of three signature bytes, which is given by the following table.

Table 7-4. Device ID
Device NameSignature Byte Address and Value
0x000x010x02
AVR64DA640x1E0x960x12
AVR64DA480x1E0x960x13
AVR64DA320x1E0x960x14
AVR64DA280x1E0x960x15
AVR64DA64S 0x1E0x960x2B
AVR64DA48S0x1E0x960x2C
AVR64DA32S0x1E0x960x2D
AVR64DA28S0x1E0x960x2E