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SM8223A Datasheet(PDF) 6 Page - Nippon Precision Circuits Inc |
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SM8223A Datasheet(HTML) 6 Page - Nippon Precision Circuits Inc |
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6 / 15 page  SM8223A NIPPON PRECISION CIRCUITS—6 Timing Characteristics Oscillator VDD = 3.0V ± 0.3V, GND = 0V, Ta = −20 to 85°C unless otherwise noted. FSK decoder VDD = 3.0V ± 0.3V, GND = 0V, fCLK = 3.579545MHz, Ta = −20 to 85°C unless otherwise noted. DTMF receiver VDD = 3.0V ± 0.3V, GND = 0V, fCLK = 3.579545MHz, Ta = −20 to 85°C unless otherwise noted. P arameter Symbol Condition Rating Unit min typ m a x Clock HIGH-level pulsewidth tWH 110 – – ns Clock LOW -level pulsewidth tWL 110 – – ns Clock rise time tr –– 3 0 ns Clock fall time tf –– 3 0 ns P arameter Symbol Condition Rating Unit min typ m a x P ow er-down release time tDPD –8– m s Oscillator start-up time tDOSC –5– m s M a r k signal to D V ON time tDED D V = LOW – – 3.75 m s FSK flag setup time tAF –– 833 (1/1.2kHz) µs FSK flag hold time tAH –– 1 0 ns Input to DOUT delay time tADD –15 m s DOUT r ise time tDr0 –– 2 0 ns DOUT fall time tDf0 –– 2 0 ns DOUT data rate tDWL/H 1188 1200 1212 baud P arameter Symbol Condition Rating Unit min typ m a x DOUT, D V rise time tDr0 –– 2 0 ns DOUT, D V fall time tDf0 –– 2 0 ns Signal detection time tRE D V –– 4 5 m s Received signal non-detection time tRE D V 20 – – m s P ause detection time tPA D V –– 2 5 m s P ause non-detection time tPR D V 20 – – m s D V output data delay time tBDD ––5 m s P ow er-down release time tDPD –8– m s Oscillator start-up time tDOSC –5– m s DOUT data rate tDWL/H 1188 1200 1212 baud DTMF flag setup time tAF –– 833 (1/1.2kHz) µs |
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