W39V040B Datasheet, PDF (12/32 Pages) Winbond – 512K × 8 CMOS FLASH MEMORY WITH LPC INTERFACE

9.2 Embedded Erase Algorithm
Start
Write Erase Command Sequence
(see below)
#Data Polling or Toggle Bit
Erasure Completed
Individual Sector Erase
Command Sequence
(Address/Command):
5555H/AAH
2AAAH/55H
5555H/80H
5555H/AAH
2AAAH/55H
Sector Address/30H
W39V040B
- 12 -
Publication Release Date: April 14, 2005
Revision A3