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 AVR16EB14/20/28/32 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 signature bytes are given in the following table.
| Device Name | Signature Bytes Address | ||
|---|---|---|---|
0x00 |
0x01 |
0x02 |
|
| AVR16EB14 | 0x1E |
0x94 |
0x49 |
| AVR16EB20 | 0x1E |
0x94 |
0x40 |
| AVR16EB28 | 0x1E |
0x94 |
0x3F |
| AVR16EB32 | 0x1E |
0x94 |
0x3E |