SB72-301CR NetBurner Inc, SB72-301CR Datasheet - Page 21

• Manufacturer Part Number: SB72-301CR
• Description: Ethernet Modules & Development Tools 32Bit 62MHz Single Board Module RJ45
• Manufacturer: NetBurner Inc

Specifications of SB72-301CR

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

7.11
February 23, 2010 S29AL008J_00_09
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
protected sector groups can be programmed or erased by selecting the sector addresses. Once V
removed from the RESET# pin, all the previously protected sector groups are protected again.
shows the algorithm, and
Notes
1. All protected sector groups unprotected. (If WP# = V
2. All previously protected sector groups are protected once again.
the top or bottom two address sectors remains protected for boot sector devices).
D a t a
Figure 7.1 Temporary Sector Group Unprotect Operation
Figure 17.11 on page 48
S h e e t
S29AL008J
IL
Temporary Sector Group
, the highest or lowest address sector remains protected for uniform sector devices;
Unprotect Completed
Program Operations
Perform Erase or
RESET# = V
RESET# = V
shows the timing diagrams, for this feature.
(Note 1)
(Note 2)
START
ID
IH
ID
. During this mode, formerly
Figure 7.1
ID
is
21