Cypress CY62128EV30 Scheda tecnica - Pagina 7
Sfoglia online o scarica il pdf Scheda tecnica per Hardware del computer Cypress CY62128EV30. Cypress CY62128EV30 12. Mobl 1 mbit (128k x 8) static ram
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Switching Waveforms
ADDRESS
CE
WE
DATA IO
ADDRESS
CE
t
SA
WE
NOTE 20
DATA IO
Table 2. Truth Table for CY62128EV30
CE
CE
WE
OE
1
2
H
X
X
X
X
L
X
X
L
H
H
L
L
H
H
H
L
H
L
X
Document #: 38-05579 Rev. *D
(continued)
Figure 5. Write Cycle No. 2 (CE1 or CE2 controlled)
t
SA
t
AW
Figure 6. Write Cycle No. 3 (WE controlled, OE LOW)
t
SCE
t
AW
t
HZWE
Inputs/Outputs
High Z
High Z
Data Out
High Z
Data in
[10, 14, 18, 19]
t
WC
t
SCE
t
PWE
t
SD
DATA VALID
[10, 19]
t
WC
t
PWE
t
SD
DATA VALID
Mode
Deselect/Power Down
Deselect/Power Down
Read
Output Disabled
Write
CY62128EV30
t
HA
t
HD
t
HA
t
HD
t
LZWE
Power
Standby (I
)
SB
Standby (I
)
SB
Active (I
)
CC
Active (I
)
CC
Active (I
)
CC
Page 7 of 11
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