Signature Bytes

All tinyAVR® microcontrollers have a 3-byte signature code that identifies the device. The three bytes reside in a separate address space. For the device, the signature bytes are given in the following table.

Note: When the device is locked, only the System Information Block (SIB) can be accessed.
Table 1. Device ID
Device Name Signature Bytes Address
0x00 0x01 0x02
ATtiny417 0x1E 0x92 0x20
ATtiny814 0x1E 0x93 0x22
ATtiny816 0x1E 0x93 0x21
ATtiny817 0x1E 0x93 0x20