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L160DT90VC Datasheet(PDF) 17 Page - Advanced Micro Devices

No. de pieza L160DT90VC
Descripción Electrónicos  16 Megabit (2 M x 8-Bit/1 M x 16-Bit) CMOS 3.0 Volt-only Boot Sector Flash Memory
PDF  52 Pages
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Fabricante Electrónico  AMD [Advanced Micro Devices]
Página de inicio  http://www.amd.com
Logo AMD - Advanced Micro Devices

L160DT90VC Datasheet(HTML) 17 Page - Advanced Micro Devices

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22358B7 May 5, 2006
Am29LV160D
15
DA TA
SH EET
Temporary Sector Unprotect
This feature allows temporary unprotection of previ-
ously protected sectors to change data in-system. The
Sector Unprotect mode is activated by setting the RE-
SET# pin to VID. During this mode, formerly protected
sectors can be programmed or erased by selecting the
sector addresses. Once VID is removed from the RE-
SET# pin, all the previously protected sectors are
protected again. Figure shows the algorithm, and Fig-
ure 22 shows the timing diagrams, for this feature.
Figure 1.
Temporary Sector Unprotect Operation
START
Perform Erase or
Program Operations
RESET# = VIH
Temporary Sector
Unprotect Completed
(Note 2)
RESET# = VID
(Note 1)
Notes:
1. All protected sectors unprotected.
2. All previously protected sectors are protected once
again.



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