cy62157ev30 Cypress Semiconductor Corporation., cy62157ev30 Datasheet - Page 8

• Manufacturer Part Number: cy62157ev30
• Description: 8-mbit 512k X 16 Static Ram
• Manufacturer: Cypress Semiconductor Corporation.

Document #: 38-05445 Rev. *E
Switching Waveforms
Notes
Write Cycle No. 1 (WE Controlled)
Write Cycle No. 2 (CE
22. Data IO is high impedance if OE = V
23. If CE
24. During this period, the IOs are in output state. Do not apply input signals.
ADDRESS
ADDRESS
BHE/BLE
BHE/BLE
DATA IO
DATA IO
1
goes HIGH and CE
CE
CE
CE
CE
WE
WE
OE
OE
1
2
1
2
NOTE 24
NOTE 24
1
2
goes LOW simultaneously with WE = V
or CE
(continued)
2
IH
Controlled)
.
t
SA
t
t
HZOE
HZOE
[18, 22, 23]
[18, 22, 23]
t
SA
Figure 5. Write Cycle No. 1
Figure 6. Write Cycle No. 1
t
t
AW
AW
IH
, the output remains in a high impedance state.
t
SCE
t
t
WC
WC
t
t
BW
BW
VALID DATA
VALID DATA
t
t
t
t
PWE
PWE
SD
SD
t
SCE
CY62157EV30 MoBL
t
t
HD
HD
t
t
HA
HA
Page 8 of 14
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