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
ATtiny202 0x1E 0x91 0x23
ATtiny204 0x1E 0x91 0x22
ATtiny402 0x1E 0x92 0x27
ATtiny404 0x1E 0x92 0x26
ATtiny406 0x1E 0x92 0x25
Parent topic: Memories