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MX29F400BTA-12 查看數據表(PDF) - Macronix International

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MX29F400BTA-12 4M-BIT [512Kx8/256Kx16] CMOS FLASH MEMORY MCNIX
Macronix International MCNIX
MX29F400BTA-12 Datasheet PDF : 44 Pages
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MX29F400T/B
CHIP UNPROTECTION ALGORITHM FOR SYSTEM WITH 12V
Increment
Sector Addr
START
Protect All Sectors
PLSCNT=1
Set OE=A9=VID
CE=VIL,A6=1
Activate WE Pulse
Time Out 12ms
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:PM0439
REV. 1.6, NOV. 12, 2001
33
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