CY7C4221V-25JC Ver la hoja de datos (PDF) - Cypress Semiconductor

Número de pieza

componentes Descripción

Lista de partido

CY7C4221V-25JC

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

Cypress Semiconductor 

CY7C4421V/4201V/4211V/4221V

PRELIMINARY

CY7C4231V/4241V/4251V

Switching Waveforms (continued)

First Data Word Latency after Reset with Simultaneous Read and Write

WCLK

tDS

D0 –D8

D0 (FIRSTVALID WRITE)

D1

D2

WEN1

tENS

[14]

tFRL

WEN2

(if applicable)

RCLK

EF

REN1,

REN2

tSKEW1

tREF

tA [15]

D3

D4

tA

Q0 –Q8

OE

tOLZ

tOE

D0

D1

42X1V–9

Notes:

14. When tSKEW1 > minimum specification, tFRL (maximum) = tCLK + tSKEW1. When tSKEW1 < minimum specification, tFRL (maximum) = either 2*tCLK + tSKEW1 or tCLK + tSKEW1.

The Latency Timing applies only at the Empty Boundary (EF = LOW).

15. The first word is available the cycle after EF goes HIGH, always.

7

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