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PCA1675 - CMOS

Description

The PCA167x series devices are CMOS integrated circuits specially suited for battery-operated, quartz-crystal-controlled wrist-watches, with a bipolar stepping motor.

1.

Features

  • 32 kHz oscillator, amplitude regulated with excellent frequency stability.
  • High immunity of the oscillator to leakage currents.
  • Very low current consumption; typically 150 nA.
  • Stop function for accurate timing.
  • Chopped motor pulses available.
  • Power-on reset for fast testing.
  • Various test modes for testing the mechanical parts of the watch and the IC.

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INTEGRATED CIRCUITS DATA SHEET PCA167x series 32 kHz watch circuits using a silver-oxide or a 3 V lithium battery Product specification Supersedes data of 1997 Apr 22 File under Integrated Circuits, IC16 1998 Apr 03 Philips Semiconductors Product specification 32 kHz watch circuits using a silver-oxide or a 3 V lithium battery FEATURES • 32 kHz oscillator, amplitude regulated with excellent frequency stability • High immunity of the oscillator to leakage currents • Very low current consumption; typically 150 nA • Stop function for accurate timing • Chopped motor pulses available • Power-on reset for fast testing • Various test modes for testing the mechanical parts of the watch and the IC.
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