MBM29DL16XTE/BE70/90
(5) Sector Group Protection Algorithm
Start
Setup Sector Group Addr.
(A19, A18, A17, A16, A15, A14, A13, A12)
PLSCNT = 1
OE
=
VID, A9
VIL, RESET
A0 VIL, A1
=
VID,
VIH
VIH
CE
=
=
=
=
A6
=
Activate WE Pulse
Time out 100 µs
Increment PLSCNT
WE
= V IH, CE = OE = V IL
(A 9 should remain V ID
)
Read from Sector Group
(Addr. = SPA, A1
A6 V0 VIL) *
=
VIH,
=
=
No
No
PLSCNT = 25?
Data = 01h?
Yes
Yes
Yes
Remove VID from A9
Write Reset Command
Protect Another Sector
Group ?
No
Device Failed
Remove VID from A9
Write Reset Command
Sector Group Protection
Completed
* : A-1 is VIL on byte mode.
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