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PCA1673 Datasheet CMOS

Manufacturer: NXP Semiconductors

Overview: 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.

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General Description

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

VERSION − − − − − 1.

Figure 1 and Chapter “Package outline” show details of standard package, available for large orders only.

Key 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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