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MX29LV040CQC-70 View Datasheet(PDF) - Macronix International

Part Name
Description
MFG CO.
'MX29LV040CQC-70' PDF : 52 Pages View PDF
Figure 16. CHIP UNPROTECTED ALGORITHM
MX29LV040C
Increment
Sector Addr
START
Protect All Sectors
PLSCNT=1
Set OE#=A9=VID
CE#=VIL, A6=1
Activate WE# Pulse
Time Out 50ms
Set OE#=CE#=VIL
A9=VID,A1=1
Set Up First Sector Addr
Read Data from Device
No
Data=00H?
Yes
No
All sectors have
been verified?
Yes
Remove VID from A9
Write Reset Command
Chip Unprotect
Complete
Increment
PLSCNT
No
PLSCNT=1000?
Yes
Device Failed
* It is recommended before unprotect whole chip, all sectors should be protected in advance.
P/N:PM1149
REV. 1.1, AUG. 30, 2005
36
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