W19B320B Datasheet, PDF (32/51 Pages) Winbond – 32Mbit, 2.7~3.6-volt single bank CMOS flash memory

W19B320BT/B DATASHEET
7.8 Security Sector Protect Verify
START
Enter Security
Sector
#RESET =
V IH or V ID
Wait 1 μ s
Write 60h to
any address
Write 40h to Security
Sector Address
with A6 = 0
A1 = 1, A0 = 0
Read from Security
Sector address
with A6 = 0
A1 = 1, A0 = 0
If data = 00h,
Security Sector is
unprotected.
If data = 01h,
Security Sector is
producted.
Remove ^V IH or V ID
from #RESET
Write reset
command
Exit Security
Sector
Security Sector
Protect Verify
complete
7.9 Program Algorithm
START
Write Program
Command Sequence
Embedded
Program
algorithm
in progress
Data Poll
from System
Verify Data?
No
Yes
Increment Address
No
Last Address?
Yes
Programming
Completed
- 32 -
Publication Release Date:Dec, 22, 2008
Revisionv A5