cy62157ev30 Cypress Semiconductor Corporation., cy62157ev30 Datasheet - Page 7

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

Document #: 38-05445 Rev. *E
Switching Waveforms
Notes
Read Cycle No. 1 (Address Transition Controlled)
Read Cycle No. 2 (OE Controlled)
19. The device is continuously selected. OE, CE
20. WE is HIGH for read cycle.
21. Address valid before or similar to CE
DATA OUT
ADDRESS
CURRENT
BHE/BLE
DATA OUT
SUPPLY
ADDRESS
CE
CE
V
OE
CC
1
2
PREVIOUS DATA VALID
HIGH IMPEDANCE
t
PU
t
1
LZCE
, BHE, BLE transition LOW and CE
t
LZBE
[20, 21]
t
t
ACE
LZOE
1
= V
t
OHA
50%
IL
t
t
DOE
, BHE, BLE, or both = V
DBE
Figure 3. Read Cycle No. 1
Figure 4. Read Cycle No. 2
t
[19, 20]
AA
t
RC
2
transition HIGH.
IL
, and CE
t
RC
RC
2
= V
IH
.
DATA VALID
CY62157EV30 MoBL
t
DATA VALID
HZOE
t
HZBE
t
HZCE
t
PD
50%
IMPEDANCE
Page 7 of 14
HIGH
I
I
CC
SB
®
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