CY7C1020BN
Document #: 001-06443 Rev. **
Page 6 of 8
Write Cycle No. 3 (WE Controlled, OE LOW)
Truth Table
CE
OE
WE
BLE
BHE
I/O
1
–I/O
8
I/O
9
–I/O
16
Mode
Power
H
X
X
X
X
High Z
High Z
Power-Down
Standby (I
SB
)
L
L
H
L
L
Data Out
Data Out
Read – All bits
Active (I
CC
)
L
H
Data Out
High Z
Read – Lower bits only
Active (I
CC
)
H
L
High Z
Data Out
Read – Upper bits only
Active (I
CC
)
L
X
L
L
L
Data In
Data In
Write – All bits
Active (I
CC
)
L
H
Data In
High Z
Write – Lower bits only
Active (I
CC
)
H
L
High Z
Data In
Write – Upper bits only
Active (I
CC
)
L
H
H
X
X
High Z
High Z
Selected, Outputs Disabled
Active (I
CC
)
L
X
X
H
H
High Z
High Z
Selected, Outputs Disabled
Active (I
CC
)
Ordering Information
Speed
(ns)
Ordering Code
Package
Diagram
Package Type
Operating
Range
12
CY7C1020BN-12VC
51-85082
44-Lead (400-Mil) Molded SOJ
Commercial
CY7C1020BN-12VXC
51-85082
44-Lead (400-Mil) Molded SOJ (Pb-free)
Commercial
CY7C1020BN-12ZC
51-85087
44-pin TSOP Type II
Commercial
CY7C1020BN-12ZXC
51-85087
44-pin TSOP Type II (Pb-free)
Commercial
15
CY7C1020BN-15ZC
51-85087
44-pin TSOP Type II
Commercial
CY7C1020BN-15ZXC
51-85087
44-pin TSOP Type II (Pb-free)
Commercial
Please contact local sales representative regarding availability of these parts.
Switching Waveforms
(continued)
t
HD
t
SD
t
SCE
t
HA
t
AW
t
PWE
t
WC
t
BW
DATA I/O
ADDRESS
CE
WE
BHE, BLE
t
SA
t
LZWE
t
HZWE
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