S29AL008J70TFI020 Spansion Inc., S29AL008J70TFI020 Datasheet - Page 21

• Manufacturer Part Number: S29AL008J70TFI020
• Description: IC, FLASH, 8MBIT, 70NS, TSOP-48
• Manufacturer: Spansion Inc.

Specifications of S29AL008J70TFI020

• Memory Type: Flash
• Memory Size: 8Mbit
• Memory Configuration: 1M X 8 / 512K X 16
• Ic Interface Type: CFI, Parallel
• Access Time: 70ns
• Supply Voltage Range: 2.7 To 3.6 V
• Memory Case Style: TSOP
• 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
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