MBM29LV800BA-120PFTR データシートの表示（PDF） - Fujitsu

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MBM29LV800BA-120PFTR

CMOS 8M (1M × 8/512K × 16) BIT

Fujitsu 

MBM29LV800TA-70/-90/-12/MBM29LV800BA-70/-90/-12

Increment PLSCNT

Start

Setup Sector Addr.

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

PLSCNT = 1

OE = V ID, A 9 = V ID,

A 6 = CE = V IL, RESET = V IH

A 0 = V IL, A 1 = V IH

Activate WE Pulse

Time out 100 µs

WE = V IH, CE = OE = V IL

(A 9 should remain V ID)

No

PLSCNT = 25?

Read from Sector

(Addr. = SA, A 0 = V IL,

A 1 = V IH, A 6 = V IL)*

No

Data = 01H?

Yes

Remove V ID from A 9

Write Reset Command

Yes

Yes

Protect Another Sector?

No

Device Failed

Remove V ID from A 9

Write Reset Command

* : A-1 is V IL on byte mode.

Sector Protection

Completed

Figure 24 Sector Protection Algorithm

49

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