GENERAL DESCRIPTION

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

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.