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CY7C1021D
Document #: 38-05462 Rev. *E
Page 8 of 11
Write Cycle No. 3 (WE Controlled, OE LOW)
Truth Table
CE
OE WE
BLE
BHE
IO0–IO7
IO8–IO15
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)
Ordering Information
Speed
(ns)
Ordering Code
Package
Diagram
Package Type
Operating
Range
10
CY7C1021D-10VXI
51-85082
44-pin (400-Mil) Molded SOJ (Pb-free)
Industrial
CY7C1021D-10ZSXI
51-85087
44-pin TSOP Type II (Pb-free)
12
CY7C1021D-10ZSXE
51-85087
44-pin TSOP Type II (Pb-free)
Automotive
Shaded areas contain advance information. Please contact your local Cypress sales representative for availability of these parts.
Switching Waveforms (continued)
tHD
tSD
tSCE
tHA
tAW
tPWE
tWC
tBW
tSA
tLZWE
tHZWE
DATA IO
ADDRESS
CE
WE
BHE,BLE
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