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 1. Device ID
Device Name Signature Bytes Address
0x00 0x01 0x02
ATtiny1616 0x1E 0x94 0x21
ATtiny3216 0x1E 0x95 0x21