參數(shù)資料
型號: 27LV002CB-90
廠商: Macronix International Co., Ltd.
英文描述: 2M-BIT [256K x 8] CMOS SINGLE VOLTAGE 3V ONLY FLASH MEMORY
中文描述: 200萬位[256K × 8] CMOS單電壓3V時僅閃存
文件頁數(shù): 39/58頁
文件大小: 528K
代理商: 27LV002CB-90
39
P/N:PM1204
MX29LV002C/002NC T/B
REV. 1.0, JUN. 30, 2005
Figure 19. CHIP UNPROTECTION ALGORITHM (A9, OE# Control)
START
Protect All Sectors
PLSCNT=1
Chip Unprotect
Complete
Data=00H
Yes
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
All sectors have
been verified
Remove VID from A9
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 whole chip, all sectors should be protected in advance.
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