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PCA2003

Part Number	PCA2003
Manufacturer	NXP
Description	CMOS
Published	Jul 14, 2020
Detailed Description	PCA2003 32 kHz watch circuit with programmable adaptive motor pulse and pulse period Rev. 5 — 1 May 2019 Product data...
Datasheet	PCA2003 PDF File

Overview

PCA2003 32 kHz watch circuit with programmable adaptive motor pulse and pulse period Rev.
5 — 1 May 2019 Product data sheet 1.
General description The PCA2003 is a CMOS integrated circuit 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.
A timing accuracy of 1 ppm is achieved with a programmable, digital frequency adjustment.
To obtain the minimum overall power consumption for the watch, an automatic motor pulse adaptation function is provided.
The circuit supplies only the minimum drive current, which is necessary to ensu...

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