MBM29DL800BA-70 데이터 시트보기 (PDF) - Spansion Inc.

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MBM29DL800BA-70

8M (1M X 8/512K X 16) BIT

Spansion Inc. 

MBM29DL800TA-70/90/MBM29DL800BA-70/90

(7) Extended Sector Protection Algorithm

Start

RESET = VID

Device is Operating in

Temporary Sector

Unprotection Mode

Wait to 4 µs

No

Extended Sector

Protection Entry?

Yes

To Setup Sector Protection

Write XXXh/60h

Increment PLSCNT

No

PLSCNT = 25?

Yes

Remove VID from RESET

Write Reset Command

Device Failed

PLSCNT = 1

To Sector Protection

Write SPA/60h

(A0 = VIL, A1 = VIH, A6 = VIL)

Time Out 250 µs

To Verify Sector Protection

Write SPA/40h

(A0 = VIL, A1 = VIH, A6 = VIL)

Setup Next Sector Address

Read from Sector Address

(A0 = VIL, A1 = VIH, A6 = VIL)

No

Data = 01h?

Yes

Yes

Protection Other Sector

?

No

Remove VID from RESET

Write Reset Command

Sector Protection

Completed

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