W49F020Q-90 查看數據表（PDF） - Winbond

零件编号

产品描述 (功能)

比赛名单

W49F020Q-90

256K x 8 CMOS FLASH MEMORY

Winbond 

Preliminary W49F020

Command Codes for Chip Erase

BYTE SEQUENCE

1 Write

2 Write

3 Write

4 Write

5 Write

6 Write

Chip Erase Acquisition Flow

ADDRESS

5555H

2AAAH

5555H

5555H

2AAAH

5555H

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

Pause 1 Sec.

Exit

Notes for chip erase:

Data Format: DQ7−DQ0 (Hex)

Address Format: A14−A0 (Hex)

DATA

AAH

55H

80H

AAH

55H

10H

Publication Release Date: October 1999

-7-

Revision A1

Share Link: