7.7 Signature Bytes

All ATtiny 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 obtained.
Table 7-4. Device ID
Device NameSignature Bytes Address
0x000x010x02
ATtiny16170x1E0x940x20
ATtiny16160x1E0x940x21
ATtiny16140x1E0x940x22