W29C040P-12 데이터 시트보기 (PDF) - Winbond

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W29C040P-12

512K ·8 CMOS FLASH MEMORY

Winbond 

W29C040

Command Codes for Software Chip Erase

BYTE SEQUENCE

ADDRESS

0 Write

5555H

1 Write

2AAAH

2 Write

5555H

3 Write

5555H

4 Write

2AAAH

5 Write

5555H

Software Chip Erase Acquisition Flow

Load data AA

to

address 5555

Load data 55

to

address 2AAA

Load data 80

to

address 5555

Load data AA

to

address 5555

Load data 55

to

address 2AAA

Load data 10

to

address 5555

Wait for 50 mS or

toggle/polling

completed

Exit

Notes for software chip erase:

Data Format: DQ7 − DQ0 (Hex)

Address Format: A14 − A0 (Hex)

-7-

DATA

AAH

55H

80H

AAH

55H

10H

Publication Release Date: May 6, 2002

Revision A9

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