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CY62127DV30
Document #: 38-05229 Rev. *H
Page 8 of 11
Truth Table
Write Cycle No. 4 (BHE-/BLE-controlled, OE LOW)[20, 21]
Switching Waveforms (continued)
DATA I/O
ADDRESS
tHD
tSD
tSA
tHA
tAW
tWC
CE
WE
DATAIN VALID
tBW
BHE/BLE
tSCE
tPWE
DON'T CARE
CE
WE
OE
BHE
BLE
I/O0–I/O7
I/O8–I/O15
Mode
Power
H
X
X
X
X
High Z
Deselect/Power-down
Standby (I SB)
X
X
X
H
H
High Z
Deselect/Power-down
Standby (I SB )
L
H
L
L
L
Read All bits
Active (I CC)
L
H
L
H
L
Read Lower Byte Only
Active (I CC)
L
H
L
L
H
Read Upper Byte Only
Active (I CC)
L
H
H
L
L
Output Disabled
Active (I CC)
L
H
H
H
L
Output Disabled
Active (I CC)
L
H
H
L
H
Output Disabled
Active (I CC)
High Z
High Z
High Z
Data Out
Data Out
High Z
High Z
Data Out
High Z
High Z
High Z
Data Out
High Z
High Z
L
L
X
L
L
Data In
Data In
Write
Active (I CC)
L
L
L
L
X
X
H
L
L
H
Data In
High Z
High Z
Data In
Write Lower Byte Only
Write Upper Byte Only
Active (I CC)
Active (I CC)
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