Lockbits

The default value given in this fuse description is the factory-programmed value and should not be mistaken for the Reset value.

Name:
LOCKBIT
Offset:
0x0A
Reset:
0xC5
Access:
-
Bit76543210
LOCKBIT[7:0]
AccessR/WR/WR/WR/WR/WR/WR/WR/W
Reset11000101

Bits 7:0 – LOCKBIT[7:0]: Lockbits

Lockbits

When the part is locked, UPDI cannot access the system bus, so it cannot read out anything but the System Information Block (SIB).

ValueDescription
0xC5 Valid key - memory access is unlocked
other Invalid key - memory access is locked