M29DW323DT, M29DW323DB
Figure 23. In-System Equipment Chip Unprotect Flowchart
START
PROTECT ALL GROUPS
n=0
CURRENT GROUP = 0
RP = VID
WRITE 60h
ANY ADDRESS WITH
A0 = VIL, A1 = VIH, A6 = VIH
WRITE 60h
ANY ADDRESS WITH
A0 = VIL, A1 = VIH, A6 = VIH
Wait 10ms
WRITE 40h
ADDRESS = CURRENT GROUP ADDRESS
A0 = VIL, A1 = VIH, A6 = VIH
Wait 4µs
READ DATA
ADDRESS = CURRENT GROUP ADDRESS
A0 = VIL, A1 = VIH, A6 = VIH
INCREMENT
CURRENT GROUP
NO ++n
= 1000
YES
RP = VIH
ISSUE READ/RESET
COMMAND
FAIL
NO DATA YES
=
00h
LAST NO
GROUP
YES
RP = VIH
ISSUE READ/RESET
COMMAND
PASS
AI05577
Note: Block Protection Groups are shown in APPENDIX D., Tables 23 and 24.
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