The signature section is a dedicated memory area used for storing miscellaneous device information, such as the device signature. Most of this memory section is reserved for internal use.
ATtiny102/ATtiny104 have a three-byte signature code, which can be used to identify the device. The three bytes reside in the signature section, as shown in the above table. The signature data for ATtiny102/ATtiny104 is given in the next table.
| Signature word address | Configuration word data | |
|---|---|---|
| High byte | Low byte | |
| 0x00 | Device ID 1 | Manufacturer ID |
| 0x01 | Reserved for internal use | Device ID 2 |
| 0x02 | Reserved for internal use | |
| 0x03 ... 0x07 | Serial number | |
| Part | Signature Bytes | ||
|---|---|---|---|
| Manufacturer ID | Device ID 1 | Device ID 2 | |
| ATtiny102 | 0x1E | 0x90 | 0x0C |
| ATtiny104 | 0x1E | 0x90 | 0x0B |