參數(shù)資料
型號: MX29LV640BU
廠商: Macronix International Co., Ltd.
英文描述: 64M-BIT [4M x 16] CMOS EQUAL SECTOR FLASH MEMORY
中文描述: 6400位[4米× 16]的CMOS平等部門閃存
文件頁數(shù): 46/64頁
文件大小: 509K
代理商: MX29LV640BU
46
P/N:PM1081
REV. 1.0, MAR. 08, 2005
MX29LV640BU
Figure 14. IN-SYSTEM SECTOR GROUP PROTECT/CHIP UNPROTECT ALGORITHMS WITH
RESET#=VID
START
PLSCNT=1
RESET#=VID
Wait 1us
Set up sector address
Sector Protect:
Write 60h to sector
address with
A6=0, A1=1, A0=0
Wait 150us
Verify Sector Protect:
Write 40h to sector
address with
A6=0, A1=1, A0=0
Read from
sector address
with
A6=0, A1=1, A0=0
Reset
PLSCNT=1
Remove VID from RESET#
Write reset command
Sector Protect
Algorithm
Chip Unprotect
Algorithm
Sector Protect complete
Remove VID from RESET#
Write reset command
Chip Unprotect complete
Device failed
Temporary Sector
Unprotect Mode
Increment PLSCNT
Increment PLSCNT
First Write
Cycle=60h
Set up first sector address
Protect all sectors:
The indicated portion of
the sector protect algorithm
must be performed
for all unprotected sectors
prior to issuing the first
sector unprotect address
Chip Unprotect:
Write 60h to sector
address with
A6=1, A1=1, A0=0
Wait 15 ms
Verify Chip Unprotect:
Write 40h to sector
address with
A6=1, A1=1, A0=0
Read from
sector address
with
A6=1, A1=1, A0=0
Data=01h
PLSCNT=25
Device failed
START
PLSCNT=1
RESET#=VID
Wait 1us
First Write
Cycle=60h
All sectors
protected
Data=00h
PLSCNT=1000
Last sector
verified
Yes
Yes
Yes
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
Protect another
sector
Reset
PLSCNT=1
Temporary Sector
Unprotect Mode
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