CY7C1021D(2009) Просмотр технического описания (PDF) - Cypress Semiconductor
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CY7C1021D Datasheet PDF : 11 Pages
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CY7C1021D
Switching Waveforms (continued)
Figure 7. Write Cycle No. 3 (WE Controlled, OE LOW)
tWC
ADDRESS
tSCE
CE
tAW
tSA
tHA
tPWE
WE
tBW
BHE, BLE
DATA I/O
tHZWE
tSD
tHD
tLZWE
Truth Table
CE OE WE BLE BHE
IO0–IO7
H X XX
X
High Z
L L HL
L
Data Out
L
H
Data Out
H
L
High Z
L X LL
L
Data In
L
H
Data In
H
L
High Z
L H HX
X
High Z
L X XH
H
High Z
IO8–IO15
High Z
Data Out
High Z
Data Out
Data In
High Z
Data In
High Z
High Z
Mode
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
Selected, Outputs Disabled
Power
Standby (ISB)
Active (ICC)
Active (ICC)
Active (ICC)
Active (ICC)
Active (ICC)
Active (ICC)
Active (ICC)
Active (ICC)
Document #: 38-05462 Rev. *F
Page 8 of 11
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