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CY7C164
CY7C166
Document #: 38-05025 Rev. *A
Page 7 of 9
CY7C164 Truth Table
CE
WE
Input/Output
Mode
Power
H
X
High Z
Deselect/Power-Down
Standby (ISB)
L
H
Data Out
Read
Active (ICC)
L
L
Data In
Write
Active (ICC)
CY7C166 Truth Table
CE
WE
OE
Input/Output
Mode
Power
H
X
X
High Z
Deselect/Power-Down
Standby (ISB)
L
H
L
Data Out
Read
Active (ICC)
L
L
H
Data In
Write
Active (ICC)
L
H
H
High Z
Select/Output Disabled
Active (ICC)
Address Designators
Address
Name
Address
Function
CY 7C164 Pin
Number
CY7C166 Pin
Number
A5
X3
1
1
A6
X4
2
2
A7
X5
3
3
A8
X6
4
4
A9
X7
5
5
A10
Y5
6
6
A11
Y4
7
7
A12
Y0
8
8
A13
Y1
9
9
A0
Y2
17
19
A1
Y3
18
20
A2
X0
19
21
A3
X1
20
22
A4
X2
21
23
Ordering Information
Speed
(ns)
Ordering Code
Package
Diagram
Package Type
Operating
Range
15
CY7C164-15PC
51-85012
22-pin (300-Mil) Molded DIP
Commercial
CY7C166-15VC
51-85030
24-pin (300-Mil) Molded SOJ
25
CY7C164-25PC
51-85012
22-pin (300-Mil) Molded DIP
Commercial
CY7C166-25VC
51-85030
24-pin (300-Mil) Molded SOJ
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