CY7C4255V-15ASXC Cypress Semiconductor Corp, CY7C4255V-15ASXC Datasheet - Page 15

• Manufacturer Part Number: CY7C4255V-15ASXC
• Description: CY7C4255V-15ASXC
• Manufacturer: Cypress Semiconductor Corp
• Series: CY7Cr

Specifications of CY7C4255V-15ASXC

• Function: Synchronous
• Memory Size: 144K (8K x 18)
• Data Rate: 100MHz
• Access Time: 10ns
• 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

Switching Waveforms
Document Number: 38-06012 Rev. *D
Notes
23. When t
24. t
t
the rising edge of RCLK and the rising edge of WCLK is less than t
CLK
SKEW1
Q
D
Q
D
0
0
WCLK
0
0
WCLK
RCLK
RCLK
–Q
–D
+ t
WEN
WEN
REN
–D
–Q
REN
OE
is the minimum time between a rising RCLK edge and a rising WCLK edge to guarantee that FF goes HIGH during the current clock cycle. If the time between
SKEW2
OE
SKEW2
EF
17
FF
17
17
17
. The Latency Timing applies only at the Empty Boundary (EF = LOW).
> minimum specification, t
t
DS
DATA IN OUTPUT REGISTER
t
LOW
SKEW1
t
ENS
[24]
t
ENS
NO WRITE
D0
t
SKEW2
(continued)
t
ENH
t
FRL
FRL
[23]
t
(maximum) = t
WFF
t
t
A
ENH
Figure 10. Empty Flag Timing
CLK
t
Figure 11. Full Flag Timing
REF
+ t
SKEW2
t
SKEW1
DS
. When t
, then FF may not change state until the next WCLK rising edge.
DATA WRITE
SKEW2
t
A
t
REF
< minimum specification, t
DATA READ
t
DS
t
t
SKEW1
WFF
t
ENS
[24]
t
ENS
CY7C4255V, CY7C4265V
CY7C4275V, CY7C4285V
D1
t
SKEW2
t
NO WRITE
ENH
FRL
t
(maximum) = either 2 × t
FRL
[23]
t
WFF
t
t
A
ENH
D0
NEXT DATA READ
t
REF
DATA WRITE
CLK
Page 15 of 24
+ t
SKEW2
or
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