AT26DF081A-SSU View Datasheet(PDF) - Atmel Corporation
Part Name
Description
MFG CO.
'AT26DF081A-SSU' PDF : 40 Pages View PDF
Tables 9-4 and 9-5 detail the various protection and locking states of the device.
Table 9-4. Sector Protection Register States
Sector Protection Register
WP
n(1)
X
0
(Don't Care)
1
Sector
n(1)
Unprotected
Protected
Note: 1. “n” represents a sector number
Table 9-5. Hardware and Software Locking
WP
SPRL Locking SPRL Change Allowed
0
0
Can be modified from 0 to 1
0
1
Hardware
Locked
Locked
1
0
Can be modified from 0 to 1
1
1
Software
Locked
Can be modified from 1 to 0
Sector Protection Registers
Unlocked and modifiable using
the Protect and Unprotect Sector
commands. Global Protect and
Unprotect can also be performed.
Locked in current state. Protect
and Unprotect Sector commands
will be ignored. Global Protect and
Unprotect cannot be performed.
Unlocked and modifiable using the
Protect and Unprotect Sector
commands. Global Protect and
Unprotect can also be performed.
Locked in current state. Protect and
Unprotect Sector commands will be
ignored. Global Protect and Unprotect
cannot be performed.
22 AT26DF081A
3600G–DFLASH–06/09
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