MBM29F800BA 데이터 시트보기 (PDF) - Fujitsu

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MBM29F800BA

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

Fujitsu 

MBM29F800TA-55/-70/-90/MBM29F800BA-55/-70/-90

Start

Setup Sector Addr.

(A18, A17, A16, A15, A14, A13, A12)

PLSCNT = 1

OE = VID, A9 = VID,

A6 = CE = VIL, RESET = VIH

Increment PLSCNT

Activate WE Pulse

Time out 100 µs

WE = VIH, CE = OE = VIL

(A9 should remain VID)

No

PLSCNT = 25?

Yes

Remove VID from A9

Write Reset Command

Device Failed

Read from Sector

(Addr. = SA, A1 = 1, A0 = V6 = 0)*

No

Data = 01H?

Yes

Yes

Protect Another Sector?

No

Remove VID from A9

Write Reset Command

Sector Protection

Completed

* : A-1 is VIL on byte mode.

Figure 6 Sector Protection Algorithm

42

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