MBM29F004BC-70PD datasheet(7/53 Pages) SPANSION

Part #	MBM29F004BC-70PD

Description	FLASH MEMORY CMOS 4 M (512 K X 8) BIT

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MBM29F004TC/004BC-70/90

7

s DEVICE BUS OPERATION

Table 2

MBM29F004TC/BC User Bus Operations

Legend : L

= VIL, H = VIH, X = “H” or “L”,

= Pulse Input. See DC Characteristics for voltage levels.

*1 : Manufacturer and device codes may also be accessed via a command register write sequence. Refer to Table 6.

*2 : WE can be VIL if OE is VIL, OE at VIH initiates the write operations.

*3 : Refer to the section on Sector Protection.

*4 : To activate the command, OE has to be taken to VID.

*5 : In case of Command Mode Sector Protect.

*6 : In case of Hardware Sector Protect.

Operation

CE

OE

WE

A0

A1

A6

A9

I/O

Auto-Select Manufacturer Code*1

LL

H

L

LL

VID

Code

Auto-Select Device Code*1

LL

H

LL

VID

Code

Read*2

LL

H

A0

A1

A6

A9

DOUT

Standby

H

X

High-Z

Output Disable

L

H

X

High-Z

Write (Program/Erase)

L

H

L

A0

A1

A6

A9

DIN

Enable Sector Protection*3

LVID

XXX

VID

X

3-Byte Sector Unlock Sequence

L

VID

A0

A1

A6

A9

DIN

2-Byte Sector Relock Sequence

L

VID

A0

A1

A6

A9

DIN

Command Mode Sector Protect*2

LVID

A0

A1

A6

A9

DIN

Verify Sector Protect*2, *5

LL

H

A0

A1

A6

A9

Code

Hardware Sector Protect*2

HVID

LX

XL

VID

X

Verify Sector Protection*2, *6

LL

H

L

H

L

VID

Code

Temporary Sector Unprotection*3

LVID

A0

A1

A6

A9

DIN

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MBM29F004BC-70PD Datasheet(PDF) 7 Page - SPANSION

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