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參數(shù)資料
| 型號： | S71GL064A08BAI0B2 |
| 廠商： | SPANSION LLC |
| 元件分類： | 存儲器 |
| 英文描述： | Stacked Multi-Chip Product (MCP) Flash Memory and RAM |
| 中文描述： | SPECIALTY MEMORY CIRCUIT, PBGA56 |
| 封裝： | 7 X 9 MM, 1.20 MM HEIGHT, LEAD FREE, FBGA-56 |
| 文件頁數(shù)： | 35/102頁 |
| 文件大?。?/td> | 1606K |
| 代理商： | S71GL064A08BAI0B2 |
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March 31, 2005 S71GL032A_00_A0
S71GL032A Based MCPs
35
A d v a n c e I n f o r m a t i o n
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 V
ID
. During this mode, formerly protected sector groups
can be programmed or erased by selecting the sector group addresses. Once V
ID
is removed from the RESET# pin, all the previously protected sector groups are
protected again.
Figure 1
shows the algorithm, and
Figure 22
shows the timing
diagrams, for this feature.
Notes:
1. All protected sector groups unprotected (If WP# = V
IL
, the highest or lowest address sector will remain protected for
uniform sector devices; the top or bottom two address sectors will remain protected for boot sector devices).
2. All previously protected sector groups are protected once again.
Figure 1. Temporary Sector Group Unprotect Operation
START
Perform Erase or
Program Operations
RESET# = V
IH
Temporary Sector
Group Unprotect Completed
(Note 2)
RESET# = V
ID
(Note 1)
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