Cypress Semiconductor CY62157CV33 Şartname Sayfası - Sayfa 10

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Sayfayı Yazdır
Switching Waveforms
Write Cycle No. 4 (BHE/BLE Controlled, OE LOW)
ADDRESS
CE
1
CE
2
BHE/BLE
WE
DATA I/O

Truth Table

CE
CE
WE
1
2
H
X
X
X
L
X
X
X
X
L
H
H
L
H
H
L
H
H
L
H
H
L
H
H
L
H
H
L
H
L
L
H
L
L
H
L
Document #: 38-05014 Rev. *F
(continued)
[19]
t
SCE
t
AW
t
SA
NOTE 20
OE
BHE
BLE
X
X
X
High Z
X
X
X
High Z
X
H
H
High Z
L
L
L
Data Out (I/O
L
H
L
Data Out (I/O
I/O
8
L
L
H
Data Out (I/O
I/O
0
H
L
L
High Z
H
H
L
High Z
H
L
H
High Z
X
L
L
Data In (I/O
X
H
L
Data In (I/O
I/O
8
X
L
H
Data In (I/O
I/O
0
t
WC
t
BW
t
PWE
t
SD
DATA
VALID
IN
Inputs/Outputs
Deselect/Power-Down
Deselect/Power-Down
Deselect/Power-Down
–I/O
) Read
O
15
–I/O
);
Read
O
7
–I/O
in High Z
15
–I/O
);
Read
8
15
–I/O
in High Z
7
Output Disabled
Output Disabled
Output Disabled
–I/O
)
Write
O
15
–I/O
);
Write
O
7
–I/O
in High Z
15
–I/O
);
Write
8
15
–I/O
in High Z
7
CY62157CV30/33
t
HA
t
HD
Mode
Power
Standby (I
SB
Standby (I
SB
Standby (I
SB
Active (I
)
CC
Active (I
)
CC
Active (I
)
CC
Active (I
)
CC
Active (I
)
CC
Active (I
)
CC
Active (I
)
CC
Active (I
)
CC
Active (I
)
CC
Page 10 of 13
)
)
)
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