PCA2000 Overview
Key Specifications
Operating Voltage: 1.55 V
Max Voltage (typical range): 3.6 V
Min Voltage (typical range): 1.1 V
Length: 1.16 mm
Description
The PCA2000 and PCA2001 are CMOS1 integrated circuits for battery operated wrist watches with a 32 kHz quartz crystal as timing element and a bipolar 1 Hz stepping motor. The quartz crystal oscillator and the frequency divider are optimized for minimum power 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 connected
- Very low power consumption, typical 90 nA
- One second output pulses for bipolar stepping motor
