CY7C4245V-25ASC Cypress Semiconductor Corp, CY7C4245V-25ASC Datasheet - Page 14

• Manufacturer Part Number: CY7C4245V-25ASC
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C4245V-25ASC

• Configuration: Dual
• Density: 64Kb
• Access Time (max): 15ns
• Word Size: 18b
• Organization: 4Kx18
• Sync/async: Synchronous
• Expandable: Yes
• Bus Direction: Uni-Directional
• Package Type: TQFP
• Clock Freq (max): 40MHz
• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (min): 3V
• Operating Supply Voltage (max): 3.6V
• Supply Current: 30mA
• Operating Temp Range: 0C to 70C
• Operating Temperature Classification: Commercial
• Mounting: Surface Mount
• Pin Count: 64
• Lead Free Status / RoHS Status: Not Compliant

Switching Waveforms
Notes
Document #: 38-06029 Rev. *D
18. When t
19. The first word is available the cycle after EF goes HIGH, always.
t
SKEW2
D
Q
0
WCLK
D
RCLK
–D
Q
WEN
0
REN
0
–Q
WCLK
RCLK
–D
0
OE
WEN
. The Latency Timing applies only at the Empty Boundary (EF = LOW).
SKEW2
17
EF
REN
–Q
OE
17
EF
17
17
> minimum specification, t
t
ENS
t
DS
t
t
DS
ENS
Figure 8. First Data Word Latency after Reset with Simultaneous Read and Write
D
0
(FIRSTVALID WRITE)
D0
t
SKEW2
(continued)
t
ENH
FRL
t
FRL
(maximum) = t
t
SKEW2
[18]
t
OLZ
t
FRL
CLK
[18]
Figure 9. Empty Flag Timing
t
REF
+ t
SKEW2
t
D
REF
. When t
1
SKEW2
t
t
OE
A
< minimum specification, t
t
REF
t
DS
t
ENS
t
D
A
2
D1
t
FRL
t
SKEW2
ENH
(maximum) = either 2*t
t
FRL
[18]
D
CY7C4225V/4215V
CY7C4235V/4245V
0
t
A
D
[19]
3
D0
t
CLK
REF
+ t
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SKEW2
D
1
D
or t
4
CLK
+
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