CY7C4225-15ASC Cypress Semiconductor Corp, CY7C4225-15ASC Datasheet - Page 17

• Manufacturer Part Number: CY7C4225-15ASC
• Manufacturer: Cypress Semiconductor Corp

Specifications of CY7C4225-15ASC

• Configuration: Dual
• Density: 18Kb
• Access Time (max): 10ns
• Word Size: 18b
• Organization: 1Kx18
• Sync/async: Synchronous
• Expandable: Yes
• Bus Direction: Uni-Directional
• Package Type: TQFP
• 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: Not Compliant

Switching Waveforms
Notes:
Document Number: 001-45652 Rev. **
36. Read from Last Physical Location.
37. Clocks are free running in this case.
38. 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
39. 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 20. Read Expansion Out Timing
Figure 23. Retransmit Timing
Figure 21. Write Expansion In Timing
Figure 22. Read Expansion In Timing
Note 36
t
XO
t
XO
t
PRT
[37, 38, 39]
RTR
to update these flags.
t
XIS
t
XI
CY7C4425/4205/4215
CY7C4225/4235/4245
t
RTR
RTR
.
Page 17 of 22
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