MX29F022 Macronix, MX29F022 Datasheet - Page 36

• Manufacturer Part Number: MX29F022
• Description: 2M-BIT[256K x 8]CMOS FLASH MEMORY
• Manufacturer: Macronix

CHIP PROTECTION ALGORITHM FOR SYSTEM WITHOUT 12V
P/N:PM0556
Increment PLSCNT
PLSCENT=32?
Device Failed
No
Yes
No
Write "Unlock for chip protect/unprotect"
Activate WE Pulse to start
36
Write Reset Command
Toggle bit checking
Read from Sector
Addr. =SA,A1=1
Set CE=OE=VIL
OE=VID,A9=VID
Data don't care
CE=VIL,A6=VIL
Chip Protection
Q6 not Toggle
PLSCNT=1
Command
Data=01H?
A9=VIH
Complete
START
MX29F022/022N
Yes
Yes
No
.
REV. 1.1, JUN. 14, 2001