PCA1465U/7

32 kHz watch circuits with adaptive motor pulse

GENERALDESCRIPTION ThePCA146xseriesdevicesareCMOSintegratedcircuitsspeciallysuitedforbattery-operated,quartz-crystal-controlledwrist-watches,withabipolarsteppingmotor. FEATURES •32kHzoscillator,amplituderegulatedwithexcellentfrequencystability •Highimmunityofthe

PCA1465U/7

32 kHz watch circuits with adaptive motor pulse

FEATURES ·32kHzoscillator,amplituderegulatedwithexcellent frequencystability ·Highimmunityoftheoscillatortoleakagecurrents ·Timecalibrationelectricallyprogrammableand reprogrammable(viaEEPROM) ·Aquartzcrystalistheonlyexternalcomponentrequired ·Verylowcurre

PCA1465U/7

32 kHz oscillator, amplitude regulated with excellent frequency stability