Cypress Semiconductor MoBL CY62157EV30 Bedienungsanleitung Seite 8

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CY62157EV30 MoBL
®
Document #: 38-05445 Rev. *H Page 8 of 17
Switching Waveforms
Figure 6 shows Address Transition Controlled read cycle waveforms.
[20, 21]
Figure 6. Read Cycle No. 1
Figure 7 shows OE Controlled read cycle waveforms.
[21, 22]
Figure 7. Read Cycle No. 2
PREVIOUS DATA VALID DATA VALID
RC
t
AA
t
OHA
t
RC
ADDRESS
DATA OUT
50%
50%
DATA VALID
t
RC
t
ACE
t
DOE
t
LZOE
t
LZCE
t
PU
HIGH IMPEDANCE
t
HZOE
t
PD
t
HZBE
t
LZBE
t
HZCE
t
DBE
OE
CE
1
ADDRESS
CE
2
BHE/BLE
DATA OUT
V
CC
SUPPLY
CURRENT
HIGH
I
CC
I
SB
IMPEDANCE
Notes
20. The device is continuously selected. OE
, CE
1
= V
IL
, BHE, BLE, or both = V
IL
, and CE
2
= V
IH
.
21. WE
is HIGH for read cycle.
22. Address valid before or similar to CE
1
, BHE, BLE transition LOW and CE
2
transition HIGH.
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