D A T A S H E E T
Temporary Sector Unprotect
This feature allows temporary unprotection of previ-
ously protected sectors to change data in-system. The
Sector Unprotect mode is activated by setting the RE-
START
SET# pin to V . During this mode, formerly protected
sectors can be programmed or erased by selecting the
ID
RESET# = V
(Note 1)
ID
sector addresses. Once V is removed from the RE-
ID
SET# pin, all the previously protected sectors are
protected again. Figure shows the algorithm, and Fig-
ure 22 shows the timing diagrams, for this feature.
Perform Erase or
Program Operations
RESET# = V
IH
Temporary Sector
Unprotect Completed
(Note 2)
Notes:
1. All protected sectors unprotected.
2. All previously protected sectors are protected once
again.
Figure 1. Temporary Sector Unprotect Operation
22358B7 May 5, 2006
Am29LV160D
15
AMD [ AMD ]
