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CY7C1021CV33
Document #: 38-05132 Rev. *G
Page 9 of 13
Write Cycle No. 3 (WE Controlled, LOW)
Truth Table
CE
OE
WE
BLE
BHE
I/O1–I/O8
[3]
I/O9–I/O16
[3]
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
H
Data Out
High-Z
Read – Lower bits only
Active (ICC)
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
H
Data In
High-Z
Write – Lower bits only
Active (ICC)
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)
L
X
X
H
H
High-Z
High-Z
Selected, Outputs Disabled
Active (ICC)
Switching Waveforms (continued)
tHD
tSD
tSCE
tHA
tAW
tPWE
tWC
tBW
tSA
tLZWE
tHZWE
DATA I/O
ADDRESS
CE
WE
BHE,BLE
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