CY7C4285V-25ASC Cypress Semiconductor Corp, CY7C4285V-25ASC Datasheet - Page 18

• Manufacturer Part Number: CY7C4285V-25ASC
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C4285V-25ASC

• Configuration: Dual
• Density: 1.125Mb
• Access Time (max): 15ns
• Word Size: 18b
• Organization: 64Kx18
• 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
Notes
Document #: 38-06012 Rev. *B
35. Clocks are free-running in this case.
36. The flags may change state during Retransmit as a result of the offset of the read and write pointers, but flags are valid at t
37. For the synchronous PAE and PAF flags (SMODE), an appropriate clock cycle is necessary after t
HF/PAE/PAF
async flags
REN/WEN
RCLK
RXI
and all
FL/RT
EF/FF
(continued)
Figure 23. Retransmit Timing
Figure 22. Read Expansion In Timing
t
PRT
[35, 36, 37]
RTR
to update these flags.
t
XIS
t
XI
CY7C4255V, CY7C4265V
CY7C4275V, CY7C4285V
RTR
t
.
RTR
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