PCA2002U/AB/1,026

Description：IC WATCH CIRCUIT WAFER
Package：Tray

SKU:fe6e7f604379 Category: Specialized ICs Brand: NXP USA Inc.

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Product introduction

Product Detailed Parameters

Description：IC WATCH CIRCUIT WAFER
Package：Tray
Series：-
Mfr：NXP USA Inc.
Type：Watch Circuit
Applications：Wrist Watches
Mounting Type：Surface Mount
Package / Case：Die
Supplier Device Package：Wafer
Grade：-
Qualification：-

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PCA2002U/AB/1,026

Overview

The PCA2002U/AB/1,026 is a CMOS integrated circuit designed for battery-operated wrist watches. It utilizes a 32 kHz quartz crystal as the timing element and drives a bipolar stepping motor. The device features an amplitude-regulated oscillator with excellent frequency stability and high immunity to leakage currents. Key electrical parameters include a typical supply current of 90 nA between motor pulses and a supply voltage range of 1.1 V to 3.6 V. The IC offers programmable time calibration with 1 ppm resolution stored in One Time Programmable (OTP) memory, allowing for precise timing adjustments.

Feature Summary

Amplitude-regulated 32 kHz quartz crystal oscillator with integrated capacitance of 5.2 pF
Electrically programmable time calibration with 1 ppm resolution via OTP memory
Very low current consumption: typically 90 nA between motor pulses
Five programmable output periods (1 s, 5 s, 10 s, 20 s, 30 s) and pulse width from 1 ms to 8 ms

Applications

Driver circuits for bipolar stepping motors in wrist watches
High immunity motor drive circuits
Applications requiring high production volumes

Procurement Notes

Verify the ordering suffix /1,026 corresponds to the wire bond die variant packed in trays. Confirm the ambient temperature range is -10 °C to +60 °C. Ensure handling procedures account for the bare die format and electrostatic discharge sensitivity specified in the datasheet.

Selection Notes

Select this component when a low-power watch circuit with programmable output periods and pulse widths is required. The PCA2002U/AB/1,026 is suitable for designs needing electrically programmable time calibration to compensate for quartz crystal frequency offsets. Consider the bare die package dimensions (1.16 x 0.86 mm) for board space constraints.

Part Context

The PCA2002 belongs to the PCA200x family of 32 kHz watch circuits. Other variants in the family include the PCA2000, PCA2001, and PCA2003, which can be distinguished by type recognition bits stored in the OTP memory. The U/AB/1,026 suffix specifically denotes the wire bond die version packaged in trays.