CY7C4255-15AXC Cypress Semiconductor Corp, CY7C4255-15AXC Datasheet - Page 10

• Manufacturer Part Number: CY7C4255-15AXC
• Description: IC SYNC FIFO MEM 8KX18 64LQFP
• Manufacturer: Cypress Semiconductor Corp
• Series: CY7Cr

Specifications of CY7C4255-15AXC

• 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
• Configuration: Dual
• Density: 144Kb
• Access Time (max): 10ns
• Word Size: 18b
• Organization: 8Kx18
• Sync/async: Synchronous
• Expandable: Yes
• Bus Direction: Uni-Directional
• 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: Lead free / RoHS Compliant

Switching Waveforms
Document #: 38-06004 Rev. *E
Note
21. PAE is offset = n. Number of data words into FIFO already = n.
PAE
WCLK
WCLK
RCLK
RCLK
WEN
WEN
REN
REN
HF
[21]
(continued)
Figure 10. Programmable Almost Empty Flag Timing
HALF FULL OR LESS
t
t
CLKH
CLKH
Figure 9. Half-Full Flag Timing
t
t
ENS
ENS
t
t
ENH
ENH
t
t
CLKL
CLKL
t
PAE
t
HF
CY7C4255, CY7C4265, CY7C4265A
t
t
ENS
ENS
HALF FULL + 1
N + 1 WORDS
OR MORE
IN FIFO
t
PAE
t
HF
HALF FULLOR LESS
n WORDS IN FIFO
Page 10 of 23
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