User guide

19
3674E–DFLASH–8/08
AT25DF081
The tables below detail the various protection and locking states of the device.
Note: 1. “n” represents a sector number
Table 9-4. Software Protection Register States
WP
Sector Protection Register
n
(1)
Sector
n
(1)
X
(Don't Care)
0 Unprotected
1 Protected
Table 9-5. Hardware and Software Locking
WP SPRL Locking SPRL Change Allowed Sector Protection Registers
0 0 Can be modified from 0 to 1
Unlocked and modifiable using the
Protect and Unprotect Sector
commands. Global Protect and
Unprotect can also be performed.
01
Hardware
Locked
Locked
Locked in current state. Protect and
Unprotect Sector commands will be
ignored. Global Protect and
Unprotect cannot be performed.
1 0 Can be modified from 0 to 1
Unlocked and modifiable using the
Protect and Unprotect Sector
commands. Global Protect and
Unprotect can also be performed.
11
Software
Locked
Can be modified from 1 to 0
Locked in current state. Protect and
Unprotect Sector commands will be
ignored. Global Protect and
Unprotect cannot be performed.