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MBM29F040C Datasheet(PDF) 36 Page - SPANSION

Part # MBM29F040C
Description  FLASH MEMORY 4M (512K x 8) BIT
PDF  41 Pages
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Manufacturer  SPANSION [SPANSION]
Direct Link  http://www.spansion.com
Logo SPANSION - SPANSION

MBM29F040C Datasheet(HTML) 36 Page - SPANSION

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MBM29F040C-55/-70/-90
Figure 7
Sector Protection Algorithm
Setup Sector Addr.
(A18, A17, A16)
Activate WE Pulse
WE = VIH, CE = OE = VIL
(A9 should remain VID)
Yes
No
OE = VID, A9 = VID, CE = VIL
Time out 100
µs
Read from Sector
Addr. = SA, A0 = 0, A1 = 1, A6 = 0
Remove VID from A9
Write Reset Command
Increment PLSCNT
No
Yes
Protect Another Sector ?
Start
Sector Protection
Completed
Data = 01H?
No
Yes
PLSCNT = 25?
Remove VID from A9
Write Reset Command
PLSCNT = 1
Device Failed



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