W49L201 Datasheet, PDF (9/23 Pages) Winbond – 256K X 8 CMOS FLASH MEMORY

Preliminary W49L201
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 T _EC
Pause TEC
DATA
AAH
55H
80H
AAH
55H
30H
Exit
Notes for chip erase:
Data Format: DQ15-DQ8: Don't Care; DQ7−DQ0 (Hex)
Address Format: A14−A0 (Hex)
A16 - A12 = 00011, for 8Kword Parameter Block1 (Sector-1)
A16 - A12 = 00101, for 8Kword Parameter Block2 (Sector-2)
A16 - A12 = 11111,
- for 104Kword Main Memory Block when Boot Block lockout feature is activated.
- for 104Kword Main Memory Block and 8Kword Boot Block when Boot Block lockout feature is inactivated.
Publication Release Date: May 2000
-9-
Revision A1