CY7C4251-25JCT データシートの表示（PDF） - Cypress Semiconductor

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CY7C4251-25JCT

64/256/512/1K/2K/4K/8K x 9 Synchronous FIFOs

Cypress Semiconductor 

Switching Waveforms (continued)

Full Flag Timing

NO Write

WCLK

D0 –D8

tSKEW1 [14]

FF

tWFF

NO Write

tDS

CY7C4421/4201/4211/4221

CY7C4231/4241/4251

NO Write

tSKEW1 [14]

DATA Write

tWFF

tWFF

DATA Write

WEN1

WEN2

(if applicable)

RCLK

REN1,

REN2

tENS

tENH

OE

Q0 –Q8

LOW

tA

DATA IN OUTPUT REGISTER

Programmable Almost Empty Flag Timing

tCLKH

tCLKL

WCLK

WEN1

tENS tENH

WEN2

(if applicable)

PAE

RCLK

tENS tENH

tSKEW2 [21]

Note

22

tPAE

REN1,

REN2

tENS

tENH

DATA Read

tA

NEXT DATA Read

N + 1 WORDS

INFIFO

tENS

tENS tENH

Note

23

tPAE

Document #: 38-06016 Rev. *A

Page 11 of 18

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