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M29W400DB70N1T 参数 Datasheet PDF下载

M29W400DB70N1T图片预览
型号: M29W400DB70N1T
PDF下载: 下载PDF文件 查看货源
内容描述: 4兆位( 512 KB ×8或256 KB ×16 ,引导块) 3 V电源闪存 [4 Mbit (512 Kb x 8 or 256 Kb x 16, boot block) 3 V supply Flash memory]
分类和应用: 闪存存储内存集成电路光电二极管
文件页数/大小: 48 页 / 1025 K
品牌: NUMONYX [ NUMONYX B.V ]
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Block protection
Figure 22. In-system equipment chip unprotect flowchart
M29W400DT, M29W400DB
START
PROTECT ALL BLOCKS
Set-up
n=0
CURRENT BLOCK = 0
RP = VID
WRITE 60h
ANY ADDRESS WITH
A0 = VIL, A1 = VIH, A6 = VIH
Unprotect
WRITE 60h
ANY ADDRESS WITH
A0 = VIL, A1 = VIH, A6 = VIH
Wait 10 ms
WRITE 40h
ADDRESS = CURRENT BLOCK ADDRESS
A0 = VIL, A1 = VIH, A6 = VIH
Verify
Wait 4 µs
READ DATA
ADDRESS = CURRENT BLOCK ADDRESS
A0 = VIL, A1 = VIH, A6 = VIH
INCREMENT
CURRENT BLOCK
NO
DATA
=
00h
YES
NO
++n
= 1000
YES
RP = VIH
LAST
BLOCK
YES
RP = VIH
NO
End
ISSUE READ/RESET
COMMAND
ISSUE READ/RESET
COMMAND
FAIL
PASS
AI03472
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