cy62128ev30 Cypress Semiconductor Corporation., cy62128ev30 Datasheet - Page 6

• Manufacturer Part Number: cy62128ev30
• Description: Mobl 1 Mbit 128k X 8 Static Ram
• Manufacturer: Cypress Semiconductor Corporation.

Switching Waveforms
Notes
Document #: 38-05579 Rev. *D
15. The device is continuously selected. OE, CE
16. WE is HIGH for read cycle.
17. Address valid before or similar to CE
18. Data IO is high impedance if OE = V
19. If CE
20. During this period, the IOs are in output state. Do not apply input signals.
DATA OUT
CURRENT
ADDRESS
DATA OUT
ADDRESS
ADDRESS
SUPPLY
DATA IO
1
V
CE
OE
goes HIGH or CE
CC
WE
OE
CE
NOTE 20
2
PREVIOUS DATA VALID
goes LOW simultaneously with WE HIGH, the output remains in high impedance state.
HIGH IMPEDANCE
t
PU
IH
t
1
Figure 2. Read Cycle 1 (Address transition controlled)
LZCE
t
.
SA
transition LOW and CE
t
Figure 4. Write Cycle No. 1 (WE controlled)
HZOE
Figure 3. Read Cycle No. 2 (OE controlled)
t
t
ACE
LZOE
1
= V
t
OHA
50%
IL
t
DOE
, CE
2
= V
t
IH
AA
2
t
.
AW
transition HIGH.
t
t
SCE
RC
t
WC
t
RC
RC
t
t
PWE
DATA VALID
SD
DATA VALID
[10, 15, 18, 19]
[10, 16, 17]
[15, 16]
DATA VALID
t
t
HZOE
HA
t
HD
t
HZCE
t
PD
50%
CY62128EV30
IMPEDANCE
HIGH
Page 6 of 11
I
I
CC
SB
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