Cirrus-logic CS61584A Manual de usuario descargar pdf (Pagina 11)

CS61584A

DS261PP5 11

DS261PP5

SWITCHING CHARACTERISTICS - PARALLEL PORT (T

= -40 to 85 °C;

TV+, RV+ = nominal ± 0.3 V; Inputs: Logic 0 = 0 V, Logic 1 = RV+)

Parameter Symbol Min Max Unit

Cycle Time t

cyc

250 - ns

Pulse Width, DS Low or RD

High PW

150 - ns

Pulse Width, DS High or RD

Low PW

150 - ns

Input Rise/Fall Times t

, t

-30ns

R/W

Hold Time t

rwh

10 - ns

R/W

Setup Time Before DS High t

rws

50 - ns

Setup Time Before DS, WR, or RD Active t

50 - ns

Setup Time Before DS, WR, or RD Active for RAM/ROM t

csr

130 - ns

Hold Time t

20 - ns

Read Data Hold Time t

dhr

10 80 ns

Write Data Hold Time t

dhw

5-ns

Muxed Address Valid to AS or ALE Fall t

asl

15 - ns

Muxed Address Hold Time t

ahl

10 - ns

Delay Time DS, WR

, or RD to AS or ALE Rise t

asd

25 - ns

Pulse Width AS or ALE High 40 - ns

Delay Time AS or ALE to DS, WR

, or RD t

ased

40 - ns

Output Data Delay Time from DS or RD

ddr

20 120 ns

Data Setup Time t

dsw

80 - ns

DTACK

Delay t

dkd

5-ns

DTACK

Hold Time t

dkh

5-ns

AS/ALE Min Low Interval for RAM/ROM t

aamir

50 - ns

CS61584A

DS261F1 11

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 53 54

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Cirrus-logic CS61584A Manual de usuario Pagina 11

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