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CS61584A датащи(PDF) 11 Page - Cirrus Logic |
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CS61584A датащи(HTML) 11 Page - Cirrus Logic |
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11 / 54 page ![]() CS61584A DS261PP5 11 DS261PP5 SWITCHING CHARACTERISTICS - PARALLEL PORT (T A = -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 tcyc 250 - ns Pulse Width, DS Low or RD High PWel 150 - ns Pulse Width, DS High or RD Low PWeh 150 - ns Input Rise/Fall Times tr, tf -30 ns R/W Hold Time trwh 10 - ns R/W Setup Time Before DS High trws 50 - ns CS Setup Time Before DS, WR, or RD Active tcs 50 - ns CS Setup Time Before DS, WR, or RD Active for RAM/ROM tcsr 130 - ns CS Hold Time tch 20 - ns Read Data Hold Time tdhr 10 80 ns Write Data Hold Time tdhw 5- ns Muxed Address Valid to AS or ALE Fall tasl 15 - ns Muxed Address Hold Time tahl 10 - ns Delay Time DS, WR, or RD to AS or ALE Rise tasd 25 - ns Pulse Width AS or ALE High 40 - ns Delay Time AS or ALE to DS, WR, or RD tased 40 - ns Output Data Delay Time from DS or RD tddr 20 120 ns Data Setup Time tdsw 80 - ns DTACK Delay tdkd 5- ns DTACK Hold Time tdkh 5- ns AS/ALE Min Low Interval for RAM/ROM taamir 50 - ns CS61584A DS261F1 11 |
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