MX29LV800AB Macronix, MX29LV800AB Datasheet - Page 41

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

FIGURE 15. IN-SYSTEM CHIP UNPROTECTION ALGORITHM WITH RESET=VID
P/N:PM0709
Increment PLSCNT
PLSCNT=1000?
Device failed
No
Yes
MX29LV800T/B & MX29LV800AT/AB
No
write 40H to sector address
Read from sector address
Remove VID from RESET
Chip unprotect complete
Set up first sector address
with A6=1, A1=1, A0=0
with A6=1, A1=1, A0=0
Write reset command
Verify chip unprotect
A6=1, A1=1, A0=0
Chip unprotect :
write 60H with
RESET=VID
Cycle=60H ?
Wait 50ms
Data=00H
Last sector
First Write
protected?
PLSCNT=1
All sector
START
verified?
Wait 1us
41
Yes
Yes
Yes
No
?
Yes
No
No
Set up next sector address
Protect all sectors
Temporary Sector
Unprotect Mode
REV. 2.5, DEC. 23, 2003