參數(shù)資料
型號(hào): 29LV400C-90
廠商: Macronix International Co., Ltd.
英文描述: 4M-BIT [512K x 8 / 256K x 16] CMOS SINGLE VOLTAGE 3V ONLY FLASH MEMORY
中文描述: 4分位[為512k × 8 / 256K × 16] CMOS單電壓3V時(shí)僅閃存
文件頁(yè)數(shù): 41/68頁(yè)
文件大?。?/td> 906K
代理商: 29LV400C-90
41
P/N:PM1155
MX29LV400C T/B
REV. 1.5, APR. 24, 2006
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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