M29W640FT datasheet(18/72 Pages) STMICROELECTRONICS

Part #	M29W640FT

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

PDF	72 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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18 / 72 page

3 Bus operations

M29W640FT, M29W640FB

18/72

Table 4.

Bus Operations, BYTE = VIH

X = VIL or VIH.

OperationE

Address Inputs

A0-A21

Data Inputs/Outputs

DQ15A

–1, DQ14-DQ0

Bus Read

VIL

VIH

Cell Address

Data Output

Bus Write

VIL

VIH

VIL

Command Address

Data Input

Output DisableX

VIH

Hi-Z

Standby

VIH

Hi-Z

Read Manufacturer

Code

VIL

VIH

A0-A3 = VIL, A6 = VIL,

A9 = VID, Others VIL or VIH

0020h

Read Device Code

VIL

VIH

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

A9 = VID, Others VIL or VIH

22EDh (M29W640FT)

22FDh (M29W640FB)

Read Extended

Memory Block Verify

Code

VIL

VIH

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

A6 = VIL, A9 = VID,

Others VIL or VIH

80h (factory locked)

00h (Customer Lockable)

Read Block

Protection Status

VIL

VIH

A0,A2,A3, A6= VIL,

A1 = VIH, A9 = VID,

A12-A21 = Block Address,

Others VIL or VIH

0001h (protected)

0000h (unprotected)

M29W640FT Datasheet(PDF) 18 Page - STMicroelectronics

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