參數(shù)資料
型號: 29F002T-90
廠商: Macronix International Co., Ltd.
英文描述: 2M-BIT [256K x 8] CMOS FLASH MEMORY
中文描述: 200萬位[256K × 8]的CMOS閃存
文件頁數(shù): 39/51頁
文件大小: 622K
代理商: 29F002T-90
39
REV. 1.5, MAR. 28, 2005
P/N: PM0547
MX29F002/002N T/B
CHIP UNPROTECTION ALGORITHM FOR SYSTEM WITHOUT 12V
START
Protect All Sectors
PLSCNT=1
Chip Unprotect
Complete
Data=00H
Yes
Set OE=A9=VIH
CE=VIL,A6=1
Activate WE Pulse to start
Data don't care
Set OE=CE=VIL
A9=VIH,A1=1
Set Up First Sector Addr
All sectors have
been verified
Write Reset Command
Device Failed
PLSCNT=1000
No
Increment
PLSCNT
No
Read Data from Device
Yes
Yes
No
Increment
Sector Addr
* It is recommended before unprotect the whole chip, all sectors should be protected in advance.
Write "unlock for sector protect/unprotect"
Command (Table 1)
Toggle bit checking
Q6 not Toggled
Yes
No
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