W49F002U Datasheet, PDF (9/23 Pages) Winbond – 256K X 8 CMOS FLASH MEMORY

W49F002U
Command Codes for Sector Erase
BYTE SEQUENCE
1 Write
2 Write
3 Write
4 Write
5 Write
6 Write
ADDRESS
5555H
2AAAH
5555H
5555H
2AAAH
SA*
Sector 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 30
to
address SA*
Pause TEC
Exit
Notes for chip erase:
Data Format: DQ7−DQ0 (Hex)
Address Format: A14−A0 (Hex)
SA : For details, see the page 6 .
DATA
AAH
55H
80H
AAH
55H
30H
Publication Release Date: April 2000
-9-
Revision A2