PCA2002 Overview
Key Specifications
Description
The PCA2002 is a CMOS1 integrated circuit for battery operated wrist watches with a 32 kHz quartz crystal as the timing element and a bipolar stepping motor. The quartz crystal oscillator and the frequency divider are optimized for minimum current consumption.
Key Features
- Amplitude-regulated 32 kHz quartz crystal oscillator, with excellent frequency stability and high immunity to leakage currents
- Electrically programmable time calibration with 1 ppm resolution stored in One Time Programmable (OTP) memory
- The quartz crystal is the only external component required
- Very low current consumption: typically 90 nA
- Output pulses for bipolar stepping motors
