MBM29LV800BE90PCV 데이터 시트보기 (PDF) - Fujitsu

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MBM29LV800BE90PCV

FLASH MEMORY CMOS 8 M (1 M × 8/512 K × 16) BIT

Fujitsu 

MBM29LV800TE/BE60/70/90

Start

Device is Operating in

Temporary Sector

Unprotection Mode

RESET = VID

Wait to 4 µs

No

Extended Sector

Protection Entry?

Yes

To Setup Sector Protection

Write XXXh/60h

PLSCNT = 1

To Protect Secter

Write 60h to Secter Address

(A6 = A0 = VIL, A1 = VIH)

Time out 150 µs

Increment PLSCNT

No

PLSCNT = 25?

Yes

Remove VID from RESET

Write Reset Command

Device Failed

To Verify Sector Protection

Write 40h to Secter Address

(A6 = A0 = VIL, A1 = VIH)

Read from Sector Address

(Addr. = SPA, A0 = VIL,

A1 = VIH, A6 = VIL)

No

Data = 01h?

Yes

Protect Other

Group ?

No

Remove VID from RESET

Write Reset Command

Sector Protection

Completed

Setup Next Sector Address

Yes

Extended Sector Protection Algorithm

51

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