BM29F040 Ver la hoja de datos (PDF) - Fujitsu

Número de pieza

componentes Descripción

Fabricante

BM29F040

FLASH MEMORY CMOS 4M (512K ×8) BIT

Fujitsu 

MBM29F040C-55/-70/-90

Start

Read Byte

(DQ0 to DQ7)

Addr. = VA

DQ7 = Data Yes

?

No

No

DQ5 = 1?

Yes

Read Byte

(DQ0 to DQ7)

Addr. = VA

VA = Byte address for programming

= Any of the sector addresses within

the sector being erased during

sector erase or multiple sector

erases operation.

= Any of the sector addresses within

the sector not being protected

during sector erase or multiple

sector erases operation.

Yes

DQ7 = Data

?

No

Fail

Pass

Note: DQ7 is rechecked even if DQ5 = “1” because DQ7 may change simultaneously with DQ5.

Figure 5 Data Polling Algorithm

33

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