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BM29F040 View Datasheet(PDF) - Fujitsu

Part NameDescriptionManufacturer
BM29F040 FLASH MEMORY CMOS 4M (512K ×8) BIT Fujitsu
Fujitsu Fujitsu
BM29F040 Datasheet PDF : 40 Pages
First Prev 31 32 33 34 35 36 37 38 39 40
MBM29F040C-55/-70/-90
Increment PLSCNT
Start
Setup Sector Addr.
(A18, A17, A16)
PLSCNT = 1
OE = VID, A9 = VID, CE = VIL
Activate WE Pulse
Time out 100 µs
WE = VIH, CE = OE = VIL
(A9 should remain VID)
No
PLSCNT = 25?
Yes
Remove VID from A9
Write Reset Command
Device Failed
Read from Sector
Addr. = SA, A0 = 0, A1 = 1, A6 = 0
No
Data = 01H?
Yes
Yes
Protect Another Sector ?
No
Remove VID from A9
Write Reset Command
Sector Protection
Completed
Figure 7 Sector Protection Algorithm
35
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