CY7C4245V-25ASC Cypress Semiconductor Corp, CY7C4245V-25ASC Datasheet - Page 19

• Manufacturer Part Number: CY7C4245V-25ASC
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C4245V-25ASC

• Configuration: Dual
• Density: 64Kb
• Access Time (max): 15ns
• Word Size: 18b
• Organization: 4Kx18
• 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 #: 38-06029 Rev. *D
32. Read from Last Physical Location.
33. Clocks are free running in this case.
34. The flags may change state during Retransmit as a result of the offset of the read and write pointers, but flags will be valid at t
35. For the synchronous PAE and PAF flags (SMODE), an appropriate clock cycle is necessary after t
HF/PAE/PAF
async flags
REN/WEN
WCLK
and/all
RCLK
FL/RT
RCLK
EF/FF
REN
RXO
WXI
RXI
(continued)
t
ENS
t
CLKH
t
XIS
t
XI
Figure 19. Read Expansion Out Timing
Figure 22. Retransmit Timing
Figure 20. Write Expansion In Timing
Figure 21. Read Expansion In Timing
Note 32
t
XO
t
XO
t
PRT
[33, 34, 35]
RTR
to update these flags.
t
XIS
t
XI
CY7C4225V/4215V
CY7C4235V/4245V
t
RTR
RTR
.
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