s29al008d Meet Spansion Inc., s29al008d Datasheet - Page 19
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s29al008d
Manufacturer Part Number
s29al008d
Description
8 Megabit 1 M X 8-bit/512 K X 16-bit Cmos 3.0 Volt-only Boot Sector Flash Memory
Manufacturer
Meet Spansion Inc.
Datasheet
1.S29AL008D.pdf
(52 pages)
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7.11
November 27, 2007 S29AL008D_00_A10
Temporary Sector Unprotect
This feature allows temporary unprotection of previously protected sectors to change data in-system. The
Sector Unprotect mode is activated by setting the RESET# pin to V
sectors can be programmed or erased by selecting the sector addresses. Once V
RESET# pin, all the previously protected sectors are protected again.
Figure 7.1
Notes
1. All protected sectors unprotected.
2. All previously protected sectors are protected once again.
shows the algorithm, and
D a t a
Figure 7.1 Temporary Sector Unprotect Operation
S h e e t
Figure 15.11 on page 42
S29AL008D
Unprotect Completed
Program Operations
Temporary Sector
Perform Erase or
RESET# = V
RESET# = V
(Note 1)
(Note 2)
START
ID
IH
shows the timing diagrams, for this feature.
ID
. During this mode, formerly protected
ID
is removed from the
19