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CY62128E
Document #: 38-05485 Rev. *F Page 7 of 12
Figure 4. Write Cycle No. 2 (CE1
or CE2 Controlled)
[11, 15, 19, 20]
Figure 5. Write Cycle No. 3 (WE Controlled, OE LOW)
[11, 20]
Truth Table
CE
1
CE
2
WE OE Inputs/Outputs Mode Power
H X X X High-Z Deselect/Power down Standby (I
SB
)
X L X X High-Z Deselect/Power down Standby (I
SB
)
L H H L Data Out Read Active (I
CC
)
L H L X Data In Write Active (I
CC
)
L H H H High-Z Selected, Outputs Disabled Active (I
CC
)
Switching Waveforms (continued)
t
WC
DATA VALID
t
AW
t
SA
t
PWE
t
HA
t
HD
t
SD
t
SCE
ADDRESS
CE
DATA IO
WE
DATA VALID
t
HD
t
SD
t
LZWE
t
PWE
t
SA
t
HA
t
AW
t
SCE
t
WC
t
HZWE
ADDRESS
CE
WE
DATA IO
NOTE
21
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