CY7C1041B
Switching Waveforms
(continued)
Write Cycle No. 3 (WE Controlled, LOW)
OE
t
WC
ADDRESS
CE
t
SCE
t
AW
t
SA
t
PWE
t
HA
WE
t
BW
BHE, BLE
t
HZWE
DATA I/O
t
LZWE
t
SD
t
HD
1041B-10
Truth Table
CE
H
L
L
L
L
L
L
L
OE
X
L
L
L
X
X
X
H
WE
X
H
H
H
L
L
L
H
BLE
X
L
L
H
L
L
H
X
BHE
X
L
H
L
L
H
L
X
I/O
0
–I/O
7
High Z
Data Out
Data Out
High Z
Data In
Data In
High Z
High Z
I/O
8
–I/O
15
High Z
Data Out
High Z
Data Out
Data In
High Z
Data In
High Z
Power Down
Read All bits
Read Lower bits only
Read Upper bits only
Write All bits
Write Lower bits only
Write Upper bits only
Selected, Outputs Disabled
Mode
Power
Standby (I
SB
)
Active (I
CC
)
Active (I
CC
)
Active (I
CC
)
Active (I
CC
)
Active (I
CC
)
Active (I
CC
)
Active (I
CC
)
8
CYPRESS [ CYPRESS SEMICONDUCTOR ]
