CY7C4225-15ASC Cypress Semiconductor Corp, CY7C4225-15ASC Datasheet - Page 12

• Manufacturer Part Number: CY7C4225-15ASC
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C4225-15ASC

• Configuration: Dual
• Density: 18Kb
• Access Time (max): 10ns
• Word Size: 18b
• Organization: 1Kx18
• Sync/async: Synchronous
• Expandable: Yes
• Bus Direction: Uni-Directional
• Package Type: TQFP
• Clock Freq (max): 66.7MHz
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (max): 5.5V
• Supply Current: 45mA
• 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 Number: 001-45652 Rev. **
22. When t
23. The first word is available the cycle after EF goes HIGH, always.
t
SKEW2
D
Q
0
D
WCLK
Q
RCLK
–D
. The Latency Timing applies only at the Empty Boundary (EF = LOW).
WEN
0
SKEW2
0
WCLK
REN
–Q
RCLK
–D
0
WEN
OE
REN
–Q
EF
17
OE
17
EF
17
17
> minimum specification, t
t
ENS
t
DS
t
Figure 9. First Data Word Latency after Reset with Simultaneous Read and Write
t
ENS
DS
D
(continued)
0
D0
(FIRSTVALID WRITE)
t
SKEW2
t
ENH
FRL
t
FRL
(maximum) = t
t
[22]
SKEW2
t
OLZ
t
FRL
CLK
Figure 10. Empty Flag Timing
[22]
t
REF
+ t
SKEW2
t
REF
D
. When t
1
SKEW2
t
t
A
OE
t
< minimum specification, t
REF
t
DS
t
ENS
t
D
A
2
D1
t
SKEW2
t
ENH
FRL
t
FRL
(maximum) = either 2*t
CY7C4425/4205/4215
CY7C4225/4235/4245
[22]
D
0
t
A
[23]
D
3
D0
t
REF
CLK
+ t
Page 12 of 22
D
SKEW2
1
D
4
or t
CLK
+
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