MX29LV800AB Macronix, MX29LV800AB Datasheet - Page 43

• Manufacturer Part Number: MX29LV800AB
• Description: 8M-BIT [1Mx8/512K x16] CMOS SINGLE VOLTAGE 3V ONLY FLASH MEMORY
• Manufacturer: Macronix

FIGURE 17. CHIP UNPROTECTION ALGORITHM (A9, OE Control)
P/N:PM0709
Sector Addr
Increment
* It is recommended before unprotect whole chip, all sectors should be protected in advance.
MX29LV800T/B & MX29LV800AT/AB
No
Set Up First Sector Addr
Read Data from Device
Write Reset Command
Remove VID from A9
Activate WE Pulse
Protect All Sectors
Set OE=CE=VIL
Time Out 50ms
Set OE=A9=VID
CE=VIL,A6=1
All sectors have
A9=VID,A1=1
been verified?
Chip Unprotect
PLSCNT=1
Data=00H?
START
Complete
43
Yes
Yes
No
PLSCNT=1000?
Device Failed
Increment
PLSCNT
Yes
No
REV. 2.5, DEC. 23, 2003