AUSTIN SEMICONDUCTOR, INC.
FLASH
AS8FLC2M32
Austin Semiconductor, Inc.
Sector ProtectAlgorithm Flow
START
PLSCNT = 1
RESET# = VID
Wait 1 ms
No
First Write
Cycle = 60h?
Temporary Sector
Unprotect Mode
Yes
Set up sector
address
Sector Protect:
Write 60h to sector
address with
A7 = 0, A2 = 1,
A1 = 0
Wait 150 µs
Verify Sector
Protect: Write 40h
to sector address
with A7 = 0,
Reset
PLSCNT = 1
Increment
PLSCNT
A2 = 1, A1 = 0
Read from
sector address
with A7 = 0,
A2 = 1, A1 = 0
No
No
PLSCNT
= 25?
Data = 01h?
Yes
Yes
Yes
Protect another
sector?
Device failed
No
Remove VID
from RESET#
Write reset
command
Sector Protect
Sector Protect
complete
Algorithm
Austin Semiconductor, Inc. reserves the right to change products or specifications without notice.
AS8FLC2M32B
Rev. 1.2 5/09
7
AUSTIN [ AUSTIN SEMICONDUCTOR ]
