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HT23C020 データシートの表示(PDF) - Holtek Semiconductor

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HT23C020
Holtek
Holtek Semiconductor Holtek
HT23C020 Datasheet PDF : 8 Pages
1 2 3 4 5 6 7 8
Pin Assignment
HT23C020
Pin Description
Pin Name
A0~A17
D0~D7
CE/CE/OE1/OE1
CE1/CE1/OE2/OE2/NC
VSS
VCC
OE/OE/NC
NC
I/O
Description
I Address inputs
O Data outputs
I Chip enable, output enable input
I Chip enable, output enable input
I Negative power supply
I Positive power supply
I Output enable input
— No connection
Operation Truth Table
Mode
Read
Deselect
Standby
Standby
CE/CE
H/L
H/L
L/H
X
CE1/CE1
H/L
H/L
X
L/H
Note: H=VIH, L=VIL, X=VIH or VIL
OE/OE
H/L
L/H
X
X
A0~A17
Valid
X
X
X
2
D0~D7
Data Out
High Z
High Z
High Z
21st Aug ’98

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