CY7C4245V-25ASXC Cypress Semiconductor Corp, CY7C4245V-25ASXC Datasheet - Page 12

• Manufacturer Part Number: CY7C4245V-25ASXC
• Description: IC SYNC FIFO MEM 4KX18 64LQFP
• Manufacturer: Cypress Semiconductor Corp
• Series: CY7Cr

Specifications of CY7C4245V-25ASXC

• Function: Synchronous
• Memory Size: 72K (4K x 18)
• Data Rate: 67MHz
• Access Time: 15ns
• Voltage - Supply: 3.3V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 64-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Document #: 38-06029 Rev. *C
Switching Waveforms
First Data Word Latency after Reset with Simultaneous Read and Write
Empty Flag Timing
Notes:
18. When t
19. The first word is available the cycle after EF goes HIGH, always.
D
+ t
Q
0
WCLK
D
RCLK
–D
0
Q
WEN
SKEW2
REN
0
–Q
WCLK
RCLK
–D
0
OE
WEN
17
EF
REN
–Q
OE
17
SKEW2
EF
17
17
. The Latency Timing applies only at the Empty Boundary (EF = LOW).
> minimum specification, t
t
ENS
t
DS
t
t
DS
ENS
D
0
(FIRSTVALID WRITE)
D0
t
SKEW2
(continued)
t
ENH
t
FRL
FRL
t
SKEW2
[18]
(maximum) = t
t
OLZ
t
FRL
[18]
CLK
t
REF
+ t
SKEW2
t
D
REF
1
. When t
SKEW2
t
t
OE
A
t
< minimum specification, t
REF
t
DS
t
ENS
t
D
A
2
CY7C4225V/4205V/4215V
CY7C4425V/4235V/4245V
D1
t
t
SKEW2
FRL
ENH
(maximum) = either 2*t
t
FRL
[18]
D
0
t
A
[19]
D
3
D0
t
REF
CLK
Page 12 of 20
+ t
SKEW2
D
1
D
or t
4
CLK
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