MBM29DL32XTE/BE80/90
Start
RESET = VID
Wait to 4 µs
Device is Operating in
Temporary Sector Group
Unprotection Mode
No
Extended Sector Group
Protection Entry?
Yes
To Setup Sector Group Protection
Write XXXh/60h
PLSCNT = 1
To Protect Secter Group
Write 60h to Secter Address
(A6 = A0 = VIL, A1 = VIH)
Time out 250 µs
To Verify Sector Group Protection
Write 40h to Secter Address
(A6 = A0 = VIL, A1 = VIH)
Increment PLSCNT
Read from Sector Group Address
No
(A6 = A0 = VIL, A1 = VIH)
Setup Next Sector
Group Address
No
Data = 01h?
PLSCNT = 25?
Yes
Yes
Yes
Protect Other Sector
Group?
Remove VID from RESET
Write Reset Command
No
Remove VID from RESET
Write Reset Command
Device Failed
Sector Group
Protection Completed
Extended Sector Group Protection Algorithm
77
SPANSION [ SPANSION ]
