MX29F200BMI-70 View Datasheet(PDF) - Macronix International
Part Name
Description
MFG CO.
'MX29F200BMI-70' PDF : 46 Pages View PDF
MX29F200T/B
SECTOR UNPROTECTION ALGORITHM FOR SYSTEM WITHOUT 12V
Increment
Sector Addr
START
Protect All Sectors
PLSCNT=1
Write "unlock for sector protect/unprotect"
Command (Table 1)
Set OE=A9=VIH
CE=VIL,A6=1
Activate WE Pulse to start
Data don't care
No
Toggle bit checking
DQ6 not Toggled
Yes
Set OE=CE=VIL
A9=VIH,A1=1
Set Up First Sector Addr
Read Data from Device
No
Data=00H?
Yes
No
All sectors have
been verified?
Yes
Write Reset Command
Chip Unprotect
Complete
Increment
PLSCNT
No
PLSCNT=1000?
Yes
Device Failed
* It is recommended before unprotect the whole chip, all sectors should be protected in advance.
P/N:PM0549
REV. 1.3 , DEC. 24, 2001
39
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