CY7C4255V-25ASC Cypress Semiconductor Corp, CY7C4255V-25ASC Datasheet - Page 14

• Manufacturer Part Number: CY7C4255V-25ASC
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C4255V-25ASC

• Configuration: Dual
• Density: 144Kb
• Access Time (max): 15ns
• Word Size: 18b
• Organization: 8Kx18
• Sync/async: Synchronous
• Expandable: Yes
• Bus Direction: Uni-Directional
• Package Type: TQFP
• Clock Freq (max): 40MHz
• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (min): 3V
• Operating Supply Voltage (max): 3.6V
• Supply Current: 30mA
• 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
Note
Document #: 38-06012 Rev. *B
23. PAE is offset = n. Number of data words into FIFO already = n.
WCLK
PAE
RCLK
WEN
WCLK
REN
RCLK
WEN
REN
HF
[23]
(continued)
HALF FULL OR LESS
t
Figure 13. Programmable Almost Empty Flag Timing
CLKH
t
CLKH
Figure 12. Half Full Timing
t
ENS
t
ENS
t
ENH
t
ENH
t
CLKL
t
CLKL
t
t
PAE
HF
t
ENS
t
ENS
HALF FULL + 1
N + 1 WORDS
OR MORE
IN FIFO
CY7C4255V, CY7C4265V
CY7C4275V, CY7C4285V
t
t
PAE
HF
HALF FULL OR LESS
n WORDS IN FIFO
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