All ATtiny microcontrollers have a 3-byte signature code that identifies the device. This code can be read in both Serial and Parallel mode. The three bytes reside in a separate address space. For the device, the signature bytes are given in the following table.
Device Name | Signature Bytes Address | ||
---|---|---|---|
0x00 | 0x01 | 0x02 | |
ATtiny202 | 0x1E | 0x91 | 0x23 |
ATtiny402 | 0x1E | 0x92 | 0x27 |