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): 69/74頁
文件大?。?/td> 556K
代理商: M29DW640F70N6F
M29DW640F
Block protection
Figure 22.
In-System Equipment Group Protect flowchart
1.
Block Protection Groups are shown in Appendix D, Table 24.
2.
RP can be either at VIH or at VID when using the In-System Technique to protect the Extended Block.
AI07758
WRITE 60h
ADDRESS = GROUP ADDRESS
A0, A2, A3, A6 = VIL, A1 = VIH
n = 0
Wait 100s
WRITE 40h
ADDRESS = GROUP ADDRESS
A0, A2, A3, A6 = VIL, A1 = VIH
RP = VIH
++n
= 25
START
PASS
YES
NO
DATA = 01h
YES
NO
RP = VIH
Wait 4s
Verify
Protect
Set-up
End
READ DATA
ADDRESS = GROUP ADDRESS
A0, A2, A3, A6 = VIL, A1 = VIH
RP = VID
ISSUE READ/RESET
COMMAND
WRITE 60h
ADDRESS = GROUP ADDRESS
A0, A2, A3, A6 = VIL, A1 = VIH
ISSUE READ/RESET
COMMAND
FAIL
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