Cypress CY7C1041DV33 - Manual (Page 9)

CY7C1041DV33
Document #: 38-05473 Rev. *E Page 9 of 13
Figure 9. Write Cycle No. 4 (WE Controlled, OE LOW)
Truth Table
CE OE WE BLE BHE IO
0
–IO
7
IO
8
–IO
15
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 L H L H Data Out High-Z Read Lower Bits Only Active (I
CC
)
L L H 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 X L L H Data In High-Z Write Lower Bits Only Active (I
CC
)
L X L 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
)
Switching Waveforms
(continued)
t
HD
t
SD
t
SCE
t
HA
t
AW
t
PWE
t
WC
t
BW
DATA IO
ADDRESS
CE
WE
BHE, BLE
t
SA
t
LZWE
t
HZWE
NOTE 21
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