CY7C1041DV33
Switching Waveforms (continued)
Figure 9. Write Cycle No. 4 (WE Controlled, OE LOW)
t
WC
ADDRESS
CE
t
SCE
t
AW
t
HA
t
SA
t
PWE
WE
t
BW
BHE, BLE
t
HZWE
t
t
SD
HD
29
DATA I/O
NOTE
t
LZWE
Truth Table
I/O0–I/O7
High Z
I/O8–I/O15
Mode
Power
CE
OE WE BLE
BHE
H
X
L
X
H
H
H
L
X
L
X
High Z
Data out
High Z
Data out
Data in
High Z
Data in
High Z
Power-down
Read all bits
Standby (ISB)
L
L
L
L
L
L
L
L
H
L
Data out
Data out
High Z
Active (ICC
Active (ICC
Active (ICC
Active (ICC
Active (ICC
Active (ICC
Active (ICC
)
)
)
)
)
)
)
L
L
Read lower bits only
L
H
L
Read upper bits only
Write all bits
X
X
X
H
L
Data in
Data in
High Z
L
L
H
L
Write lower bits only
Write upper bits only
Selected, outputs disabled
L
H
X
H
X
High Z
Note
29. During this period the I/Os are in the output state and input signals should not be applied.
Document Number: 38-05473 Rev. *I
Page 10 of 17
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