Rainbow Electronics AT26DF081A - Manual (Page 22)

22
3600H–DFLASH–11/2012
AT26DF081A
Tables 9-4 and 9-5 detail the various protection and locking states of the device.
Note: 1. “n” represents a sector number
Table 9-4. Sector 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.
0 1
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.
1 1
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.