参数资料
型号: S29GL032M10TAIR02
厂商: SPANSION LLC
元件分类: PROM
英文描述: MirrorBit Flash Family
中文描述: 4M X 8 FLASH 3V PROM, 100 ns, PDSO40
封装: MO-142-EC, TSOP-40
文件页数: 155/160页
文件大小: 4727K
代理商: S29GL032M10TAIR02
94
S29GLxxxM MirrorBitTM Flash Family
S29GLxxxM_00A5 April 30, 2004
Pr e l i m i n a r y
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 set-
ting the RESET# pin to VID. During this mode, formerly protected sector groups
can be programmed or erased by selecting the sector group addresses. Once VID
is removed from the RESET# pin, all the previously protected sector groups are
protected again. Figure 1 shows the algorithm, and Figure 23 shows the timing
diagrams, for this feature.
Notes:
1. All protected sector groups unprotected (If WP# = VIL, the first or last sector will remain protected).
2. All previously protected sector groups are protected once again.
Figure 1. Temporary Sector Group Unprotect Operation
START
Perform Erase or
Program Operations
RESET# = VIH
Temporary Sector
Group Unprotect Completed
(Note 2)
RESET# = VID
(Note 1)
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