CY7C4245V-25ASXCT Cypress Semiconductor Corp, CY7C4245V-25ASXCT Datasheet - Page 11

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

Specifications of CY7C4245V-25ASXCT

• 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
Read Cycle Timing
Notes:
Reset Timing
15. t
16. The clocks (RCLK, WCLK) can be free-running during reset.
17. After reset, the outputs will be LOW if OE = 0 and three-state if OE = 1.
REN, WEN,
between the rising edge of WCLK and the rising edge of RCLK is less than t
SKEW2
Q
0
EF,PAE
FF,PAF,
Q
WCLK
RCLK
–Q
WEN
REN
0
–Q
is the minimum time between a rising WCLK edge and a rising RCLK edge to guarantee that EF will go HIGH during the current clock cycle. It the time
OE
EF
17
RS
HF
LD
17
[16]
t
ENS
t
OLZ
(continued)
t
ENH
t
CLKH
t
t
A
REF
t
t
t
RSF
RSF
RSF
t
OE
t
RS
t
CLK
t
SKEW2
NO OPERATION
[15]
t
CLKL
SKEW2
, then EF may not change state until the next RCLK edge.
VALID DATA
t
RSR
t
REF
CY7C4225V/4205V/4215V
CY7C4425V/4235V/4245V
t
OHZ
OE = 1
OE = 0
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[17]
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