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M295V400B-120M1R データシートの表示(PDF) - STMicroelectronics
部品番号
コンポーネント説明
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M295V400B-120M1R
4 Mbit (512Kb x8 or 256Kb x16, Boot Block)Single Supply Flash Memory
STMicroelectronics
M295V400B-120M1R Datasheet PDF : 34 Pages
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Figure 15. All Blocks Unprotecting Flowchart
M29F400T, M29F400B
START
PROTECT
ALL BLOCKS
n=0
W = VIH
E, G, A9 = VID
A12, A15 = VIH
Wait 4
µ
s
W = VIL
Wait 10ms
W = VIH
E, G = VIH
Set-up
Unprotect
Verify
E, A0 = VIL; A1, A6 = VIH; A9 = VID
A12-A17 IDENTIFY BLOCK
Wait 4
µ
s
G = VIL
Wait 60ns
VERIFY BLOCK
PROTECT STATUS
NEXT
BLOCK
NO ++n
= 1000
YES
A9 = VIH
FAIL
NO DATA YES
=
00h
LAST NO
BLK.
YES
A9 = VIH
PASS
AI01876C
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