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M29DW641F Datasheet(PDF) 76 Page - Numonyx B.V

Part # M29DW641F
Description  64 Mbit (4Mb x16, Multiple Bank, Page, Boot Block) 3V Supply Flash Memory
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Manufacturer  NUMONYX [Numonyx B.V]
Direct Link  http://www.numonyx.com
Logo NUMONYX - Numonyx B.V

M29DW641F Datasheet(HTML) 76 Page - Numonyx B.V

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High voltage Block Protection
M29DW641F
76/80
Figure 23.
Programmer equipment Chip Unprotect flowchart
1.
Block Protection Groups are shown in
Appendix D, Table 28.
PROTECT ALL
GROUPS
AI07757
A6, A12, A15 = VIH(1)
E, G, A9 = VID
DATA = 00h
W = VIH
E, G = VIH
ADDRESS = CURRENT
GROUP ADDRESS
A0, A2, A3 = VIL
A1, A6 = VIH
Wait 10ms
INCREMENT
CURRENT GROUP
n = 0
CURRENT GROUP = 0
Wait 4µs
W = VIL
++n
= 1000
START
YES
YES
NO
NO
LAST
GROUP
YES
NO
E = VIL
Wait 4µs
G = VIL
Wait 60ns
Read DATA
FAIL
PASS
A9 = VIH
E, G = VIH
A9 = VIH
E, G = VIH


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