MX29LV160CT Datasheet, PDF (43/66 Pages) Macronix International – 16M-BIT [2Mx8/1Mx16] CMOS SINGLE VOLTAGE 3V ONLY FLASH MEMORY

MX29LV160C T/B
Figure 17. CHIP UNPROTECTION ALGORITHM (A9, OE# Control)
Increment
Sector Addr
START
Protect All Sectors
PLSCNT=1
Set OE#=A9=VID
CE#=VIL, A6=1
Activate WE# Pulse
Time Out 50ms
Set OE#=CE#=VIL
A9=VID, A1=1, A6=0, A0=0
Set Up First Sector Addr
Read Data from Device
No
Data=00H?
Yes
No
All sectors have
been verified?
Yes
Remove VID from A9
Write Reset Command
Chip Unprotect
Complete
Increment
PLSCNT
No
PLSCNT=1000?
Yes
Device Failed
* It is recommended before unprotect whole chip, all sectors should be protected in advance.
P/N:PM1186
REV. 1.2, JAN. 19, 2006
43