M29W640FB Ver la hoja de datos (PDF) - STMicroelectronics

Número de pieza

componentes Descripción

Fabricante

M29W640FB

64 Mbit (8Mb x8 or 4Mb x16, Page, Boot Block) 3V Supply Flash Memory

STMicroelectronics 

3 Bus operations

M29W640FT, M29W640FB

Table 4. Bus Operations, BYTE = VIH

Operation

E

G

W

Address Inputs

A0-A21

Bus Read

VIL VIL VIH Cell Address

Bus Write

VIL VIH VIL Command Address

Output Disable

X

VIH VIH X

Standby

VIH

X

XX

Read Manufacturer

Code

VIL

VIL

VIH

A0-A3 = VIL, A6 = VIL,

A9 = VID, Others VIL or VIH

Read Device Code

VIL

VIL

VIH

A0 = VIH, A1-A3= VIL, A6 = VIL,

A9 = VID, Others VIL or VIH

Read Extended

A0 -A1 = VIH, A2-A3= VIL,

Memory Block Verify VIL VIL VIH A6 = VIL, A9 = VID,

Code

Others VIL or VIH

Read Block

Protection Status

A0,A2,A3, A6= VIL,

VIL

VIL

VIH

A1 = VIH, A9 = VID,

A12-A21 = Block Address,

Others VIL or VIH

1. X = VIL or VIH.

Data Inputs/Outputs

DQ15A–1, DQ14-DQ0

Data Output

Data Input

Hi-Z

Hi-Z

0020h

22EDh (M29W640FT)

22FDh (M29W640FB)

80h (factory locked)

00h (Customer Lockable)

0001h (protected)

0000h (unprotected)

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