CY7C4425-35AI Ver la hoja de datos (PDF) - Cypress Semiconductor

Número de pieza

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Lista de partido

CY7C4425-35AI

64, 256, 512, 1K, 2K, 4K x 18 Synchronous FIFOs

Cypress Semiconductor 

Switching Waveforms (continued)

Read Expansion Out Timing

tCLKH

WCLK

Note 32

tXO

RXO

REN

tXO

tENS

Write Expansion In Timing

tXI

WXI

tXIS

WCLK

Read Expansion In Timing

RXI

RCLK

CY7C4425/4205/4215

CY7C4225/4235/4245

tXI

tXIS

42X5–20

42X5–21

42X5–22

Retransmit Timing[33, 34, 35]

FL/RT

REN/WEN

tPRT

tRTR

EF/FF

and all

async flags

HF/PAE/PAF

Notes:

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 tRTR.

35. For the synchronous PAE and PAF flags (SMODE), an appropriate clock cycle is necessary after tRTR to update these flags.

42X5–23

13

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