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M29DW641F Datasheet(PDF) 77 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) 77 Page - Numonyx B.V

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M29DW641F
High voltage Block Protection
77/80
Figure 24.
In-System equipment Group Protect flowchart
1.
Block Protection Groups are shown in
Appendix D, Table 28.
2.
RP can be either at VIH or at VID when using the In-System Technique to protect the Extended Block.
AI07758
WRITE 60h
ADDRESS = GROUP ADDRESS
A0, A2, A3, A6 = VIL, A1 = VIH
n = 0
Wait 100µs
WRITE 40h
ADDRESS = GROUP ADDRESS
A0, A2, A3, A6 = VIL, A1 = VIH
RP = VIH
++n
= 25
START
PASS
YES
NO
DATA = 01h
YES
NO
RP = VIH
Wait 4µs
READ DATA
ADDRESS = GROUP ADDRESS
A0, A2, A3, A6 = VIL, A1 = VIH
RP = VID
ISSUE READ/RESET
COMMAND
WRITE 60h
ADDRESS = GROUP ADDRESS
A0, A2, A3, A6 = VIL, A1 = VIH
ISSUE READ/RESET
COMMAND
FAIL


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