CY7C195B 查看數據表（PDF） - Cypress Semiconductor
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CY7C195B Datasheet PDF : 13 Pages
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CY7C194B
CY7C195B
Pin Description
Pin
AX
CE
I/OX
NC
OE
VCC
WE
Type
Input
Control
Input or
Output
–
Control
Supply
Control
Description
Address Inputs.
Chip Enable.
Data Input/Outputs.
No Connect. Pins are not internally connected to
the die.
Output Enable (CY7C195 only).
Power (5.0V).
Write Enable.
28 DIP
2, 3, 4, 5, 6,
7, 8, 9, 10,
11, 22, 23,
24, 25, 26,
27
12
16, 17, 18,
19
1, 20, 21
13
28
15
24 DIP
1, 2, 3, 4, 5,
6, 7, 8, 9,
10, 18, 19,
20, 21, 22,
23
11
14, 15, 16,
17
–
–
24
13
24 SOJ
1, 2, 3, 4, 5,
6, 7, 8, 9,
10, 18, 19,
20, 21, 22,
23
11
14, 15, 16,
17
–
–
24
13
28 SOJ
2, 3, 4, 5, 6,
7, 8, 9, 10,
11, 22, 23,
24, 25, 26,
27
12
16, 17, 18,
19
1, 20, 21
13
28
15
CY7C195B Truth Table
CE
OE
H
X
L
L
L
X
L
H
CY7C194B Truth Table
WE I/Ox
X
High Z
H
Data Out
L
Data In
H
High Z
Mode
Deselect / Power-Down
Read
Write
Selected, outputs disabled
Power
Standby (ISB)
Active (ICC)
Active (ICC)
Active (ICC)
CE
WE Input/Output
H
X High Z
L
H Data Out
L
L Data In
Mode
Power-Down
Read
W rite
Power
Standby (ISB)
Active (ICC)
Active (ICC)
Document #: 38-05409 Rev. *A
Page 4 of 13
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