參數(shù)資料
型號: M29DW640F70N6F
廠商: STMICROELECTRONICS
元件分類: PROM
英文描述: 4M X 16 FLASH 3V PROM, 70 ns, PDSO48
封裝: 12 X 20 MM, LEAD FREE, PLASTIC, TSOP-48
文件頁數(shù): 70/74頁
文件大小: 556K
代理商: M29DW640F70N6F
Block protection
M29DW640F
Figure 23.
In-System Equipment Chip Unprotect flowchart
1.
Block Protection Groups are shown in Appendix D, Table 24.
AI07759
WRITE 60h
ANY ADDRESS WITH
A0, A2, A3 = VIL, A1, A6 = VIH
n = 0
CURRENT GROUP = 0
Wait 10ms
WRITE 40h
ADDRESS =
CURRENT GROUP ADDRESS
A0, A2, A3 = VIL, A1, A6 = VIH
RP = VIH
++n
= 1000
START
FAIL
PASS
NO
DATA = 00h
YES
NO
RP = VIH
Wait 4s
READ DATA
ADDRESS =
CURRENT GROUP ADDRESS
A0, A2, A3 = VIL, A1, A6 = VIH
RP = VID
ISSUE READ/RESET
COMMAND
ISSUE READ/RESET
COMMAND
PROTECT ALL GROUPS
INCREMENT
CURRENT GROUP
LAST
GROUP
YES
NO
WRITE 60h
ANY ADDRESS WITH
A0, A2, A3, A6 = VIL, A1 = VIH
Verify
Unprotect
Set-up
End
YES
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