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參數(shù)資料
| 型號： | S71AL016D02-B7 |
| 廠商： | Spansion Inc. |
| 英文描述： | Stacked Multi-Chip Product (MCP) Flash Memory and RAM |
| 中文描述： | 堆疊式多芯片產(chǎn)品（MCP）的閃存和RAM |
| 文件頁數(shù)： | 21/76頁 |
| 文件大?。?/td> | 909K |
| 代理商： | S71AL016D02-B7 |
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August 4, 2004 S29AL016D_00_A1_E
S29AL016D
21
A d v a n c e I n f o r m a t i o n
It is possible to determine whether a sector is protected or unprotected. See “Au-
toselect Mode” for details.
Sector protection/unprotection can be implemented via two methods.
The primary method requires V
ID
on the RESET# pin only, and can be imple-
mented either in-system or via programming equipment.
Figure 2
shows the
algorithms and
Figure 23
shows the timing diagram. This method uses standard
microprocessor bus cycle timing. For sector unprotect, all unprotected sectors
must first be protected prior to the first sector unprotect write cycle.
The alternate method intended only for programming equipment requires V
ID
on
address pin A9 and OE#. This method is compatible with programmer routines
written for earlier 3.0 volt-only Spansion flash devices. Details on this method are
provided in a supplement, publication number 21468. Contact a Spansion repre-
sentative to request a copy.
Temporary Sector Unprotect
This feature allows temporary unprotection of previously protected sectors to
change data in-system. The Sector Unprotect mode is activated by setting the
RESET# pin to V
ID
. During this mode, formerly protected sectors can be pro-
grammed or erased by selecting the sector addresses. Once V
ID
is removed from
the RESET# pin, all the previously protected sectors are protected again. shows
the algorithm, and
Figure 22
shows the timing diagrams, for this feature.
Figure 1. Temporary Sector Unprotect Operation
START
Perform Erase or
Program Operations
RESET# = V
IH
Temporary Sector
Unprotect Completed
(Note 2)
RESET# = V
ID
(Note 1)
Notes:
1. All protected sectors unprotected.
2. All previously protected sectors are protected once
again.
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| S71AL016D02BAWBF0 | Stacked Multi-Chip Product (MCP) Flash Memory and RAM |
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| S71AL016D02BAWBF3 | Stacked Multi-Chip Product (MCP) Flash Memory and RAM |
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| S71AL016D02BAWBF0 | 制造商:SPANSION 制造商全稱:SPANSION 功能描述:Stacked Multi-Chip Product (MCP) Flash Memory and RAM |
| S71AL016D02BAWBF2 | 制造商:SPANSION 制造商全稱:SPANSION 功能描述:Stacked Multi-Chip Product (MCP) Flash Memory and RAM |
| S71AL016D02BAWBF3 | 制造商:SPANSION 制造商全稱:SPANSION 功能描述:Stacked Multi-Chip Product (MCP) Flash Memory and RAM |
| S71AL016D02BAWTF0 | 制造商:SPANSION 制造商全稱:SPANSION 功能描述:Stacked Multi-Chip Product (MCP) Flash Memory and RAM |
| S71AL016D02BAWTF2 | 制造商:SPANSION 制造商全稱:SPANSION 功能描述:Stacked Multi-Chip Product (MCP) Flash Memory and RAM |
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