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M29W400DB45N6F 参数 Datasheet PDF下载

M29W400DB45N6F图片预览
型号: M29W400DB45N6F
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
M29W400DT, M29W400DB
Figure 20. Programmer equipment chip unprotect flowchart
START
PROTECT ALL BLOCKS
Set-up
n=0
CURRENT BLOCK = 0
A6, A12, A15 = VIH
E, G, A9 = VID
Wait 4 µs
Unprotect
W = VIL
Wait 10 ms
W = VIH
E, G = VIH
ADDRESS = CURRENT BLOCK ADDRESS
A0 = VIL, A1, A6 = VIH
E = VIL
Wait 4 µs
G = VIL
Verify
Wait 60 ns
Read DATA
INCREMENT
CURRENT BLOCK
NO
DATA
=
00h
YES
NO
++n
= 1000
YES
LAST
BLOCK
YES
A9 = VIH
E, G = VIH
PASS
NO
End
A9 = VIH
E, G = VIH
FAIL
AI03470
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