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AM29F004B Datasheet(PDF) 30 Page - Advanced Micro Devices

Part # AM29F004B
Description  4 Megabit (512 K x 8-Bit) CMOS 5.0 Volt-only Boot Sector Flash Memory
PDF  37 Pages
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Manufacturer  AMD [Advanced Micro Devices]
Direct Link  http://www.amd.com
Logo AMD - Advanced Micro Devices

AM29F004B Datasheet(HTML) 30 Page - Advanced Micro Devices

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28
Am29F004B
8/5/05
AD VA NC E
IN FO RM AT ION
AC CHARACTERISTICS
Figure 16.
Sector Unlock Sequence Timing Diagram
Figure 17.
Sector Relock Timing Diagram
Parameter
All Speed Options
JEDEC
Std.
Description
Unit
tVIDR
VID Rise and Fall Time (Not 100% tested)
Min
500
ns
OE#
A18 – A0
D7 – D0
CE#
WE#
AAh
555h
55h
2AAh
20h/24h
555h
tVIDR
If 20h is written, Sector Unprotect mode
is enabled. If 24h is written, command mode
Sector Protect/Unprotect is enabled.
Device is ready to read from array.
VID
VSS, VIL
or VIH
OE#
A18 – A0
D7 – D0
CE#
WE#
90h
XXXh
F0h or 00h
XXXh
tVIDR
VID
VSS, VIL
or VIH
tVIDR
0 V or 5 V
Device exits Temporary Sector Unprotect mode
or command mode Sector Protect/Unprotect.
Returns to reading array data.
Device is in either Temporary Sector Unprotect
mode or command mode Sector Protect/Unprotect.



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