IMX29F002 Macronix International, IMX29F002 Datasheet - Page 39

• Manufacturer Part Number: IMX29F002
• Description: 2M-BIT [256K x 8] CMOS FLASH MEMORY
• Manufacturer: Macronix International

CHIP UNPROTECTION ALGORITHM FOR SYSTEM WITHOUT 12V
P/N: PM0547
Sector Addr
Increment
* It is recommended before unprotect the whole chip, all sectors should be protected in advance.
No
Write "unlock for sector protect/unprotect"
No
Activate WE Pulse to start
Set Up First Sector Addr
Read Data from Device
Write Reset Command
Command (Table 1)
Toggle bit checking
Protect All Sectors
Set OE=CE=VIL
Data don't care
Set OE=A9=VIH
CE=VIL,A6=1
All sectors have
A9=VIH,A1=1
Q6 not Toggled
been verified?
PLSCNT=1
Chip Unprotect
Data=00H?
START
Complete
39
Yes
Yes
Yes
MX29F002/002N
No
PLSCNT=1000?
Device Failed
Increment
PLSCNT
Yes
No
REV. 1.1, JUN. 14, 2001