S29GL-A SPANSION [SPANSION], S29GL-A Datasheet - Page 37

• Manufacturer Part Number: S29GL-A
• Description: S29GL-A MirrorBit Flash Family
• Manufacturer: SPANSION [SPANSION]

Notes:
1. All protected sector groups unprotected (If WP# = V
2. All previously protected sector groups are protected once again.
April 22, 2005 S29GL-A_00_A3
uniform sector devices; the top or bottom two address sectors remains protected for boot sector devices).
Temporary Sector Group Unprotect
This feature allows temporary unprotection of previously protected sector
groups to change data in-system. The Sector Group Unprotect mode is activated
by setting the RESET# pin to V
groups can be programmed or erased by selecting the sector group addresses.
Once V
groups are protected again.
page 76
ID
shows the timing diagrams, for this feature.
is removed from the RESET# pin, all the previously protected sector
Figure 1. Temporary Sector Group Unprotect Operation
A d v a n c e
S29GL-A MirrorBit™ Flash Family
I n f o r m a t i o n
Group Unprotect Completed
Figure 1
Program Operations
ID
Temporary Sector
Perform Erase or
. During this mode, formerly protected sector
RESET# = V
RESET# = V
(Note 1)
(Note 2)
IL
START
, the highest or lowest address sector remains protected for
shows the algorithm, and
ID
IH
Figure 22, on
35