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CY7C1041
8
Truth Table
CE
OE
WE
BLE
BHE
I/O0–I/O7
I/O8–I/O15
Mode
Power
H
X
X
X
X
High Z
High Z
Power Down
Standby (ISB)
L
L
H
L
L
Data Out
Data Out
Read All Bits
Active (ICC)
L
L
H
L
H
Data Out
High Z
Read Lower Bits Only
Active (ICC)
L
L
H
H
L
High Z
Data Out
Read Upper Bits Only
Active (ICC)
L
X
L
L
L
Data In
Data In
Write All Bits
Active (ICC)
L
X
L
L
H
Data In
High Z
Write Lower Bits Only
Active (ICC)
L
X
L
H
L
High Z
Data In
Write Upper Bits Only
Active (ICC)
L
H
H
X
X
High Z
High Z
Selected, Outputs Disabled
Active (ICC)
Switching Waveforms (continued)
Write Cycle No. 3 (WE Controlled, LOW)
1041-10
tHD
tSD
tSCE
tHA
tAW
tPWE
tWC
tBW
DATA I/O
ADDRESS
CE
WE
BHE, BLE
tSA
tLZWE
tHZWE