s29al008j Meet Spansion Inc., s29al008j Datasheet - Page 19

• Manufacturer Part Number: s29al008j
• 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.

7.11
May 23, 2008 S29AL008J_00_04
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 17.11 on page 47
Notes
1. All protected sectors unprotected.
2. All previously protected sectors are protected once again.
D a t a
S h e e t
shows the timing diagrams, for this feature.
( A d v a n c e
Figure 7.1 Temporary Sector Unprotect Operation
S29AL008J
I n f o r m a t i o n )
Unprotect Completed
Program Operations
Temporary Sector
Perform Erase or
RESET# = V
RESET# = V
(Note 1)
(Note 2)
START
ID
IH
ID
. During this mode, formerly protected
Figure 7.1
shows the algorithm, and
ID
is removed from the
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