MBM29F080A Ver la hoja de datos (PDF) - Fujitsu

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componentes Descripción

Fabricante

MBM29F080A

FLASH MEMORY CMOS 8M (1M ×8) BIT

Fujitsu 

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MBM29F080A-55/-70/-90

Start

Setup Sector Group Addr.

(A19, A18, A17)

PLSCNT = 1

OE = VID, A9 = VID,

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 Group

Addr. (A19, A18, A17)

A1 = 1, A0 = A6 = 0

No

Data = 01H?

Yes

Yes

Protect Another Sector

Group?

No

Remove VID from A9

Write Reset Command

Sector Protection

Completed

Figure 20 Sector Group Protection Algorithm

41

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