MBM29LV160TE/BE-70/90/12
Start
RESET = VID
Wait to 4 µs
Device Is Operating in
Temporary Sector Unprotect
Mode
No
Extended Sector
Protect Entry ?
Yes
To Setup Sector Protect
Write XXXH/60H
PLSCNT = 1
To Sector Protect
Write 60H to Sector Address
(A0 = V1L, A1 = VIH, A6 = VIL)
Time Out 250 µs
To Verify Sector Protect
Write 40H to Sector Address
(A0 = V1L, A1 = VIH, A6 = VIL)
Increment PLSCNT
Read from Sector Protect
(A0 = V1L, A1 = VIH, A6 = VIL)
No
Setup Next Sector Address
No
PLSCNT = 25 ?
Yes
Data = 01H ?
Yes
Yes
Protect Other Sector
?
Remove VID from RESET
Write Reset Command
No
Remove VID from RESET
Write Reset Command
Device Failed
Sector Protection
Completed
Figure 27 Extended Sector Protection Algorithm
53
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