cy62128e Cypress Semiconductor Corporation., cy62128e Datasheet - Page 6

• Manufacturer Part Number: cy62128e
• Description: 1-mbit 128k X 8 Static Ram
• Manufacturer: Cypress Semiconductor Corporation.

Switching Waveforms
Read Cycle 1 (Address Transition Controlled)
Read Cycle No. 2 (OE Controlled)
Write Cycle No. 1 (WE Controlled)
Notes:
Document #: 38-05485 Rev. *E
16. The device is continuously selected. OE, CE
17. WE is HIGH for read cycle.
18. Address valid before or similar to CE
19. Data IO is high impedance if OE = V
20. If CE
21. During this period, the IOs are in output state and input signals must not be applied.
DATA OUT
CURRENT
ADDRESS
DATA OUT
ADDRESS
ADDRESS
SUPPLY
DATA IO
1
V
goes HIGH or CE
CE
OE
CC
WE
CE
OE
NOTE 21
2
goes LOW simultaneously with WE HIGH, the output remains in high impedance state.
PREVIOUS DATA VALID
HIGH IMPEDANCE
t
PU
IH
1
t
LZCE
.
t
transition LOW and CE
SA
t
HZOE
[11, 17, 18]
[11, 15, 19, 20]
t
t
1
LZOE
ACE
= V
t
OHA
IL
50%
t
, CE
DOE
2
[16, 17]
= V
IH
t
2
AA
.
t
transition HIGH.
AW
t
t
SCE
RC
t
WC
t
RC
RC
t
t
PWE
DATA VALID
SD
DATA VALID
DATA VALID
t
t
HZOE
HA
CY62128E MoBL
t
HD
t
HZCE
t
PD
50%
IMPEDANCE
Page 6 of 11
HIGH
I
I
CC
SB
®
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