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PCF2003

NXP
Part Number PCF2003
Manufacturer NXP
Description CMOS
Published Jul 12, 2020
Detailed Description PCF2003 32 kHz watch circuit with programmable adaptive motor pulse and pulse period Rev. 1.1 — 16 October 2019 Produ...
Datasheet PDF File PCF2003 PDF File

PCF2003
PCF2003

Overview
PCF2003 32 kHz watch circuit with programmable adaptive motor pulse and pulse period Rev.
1.
1 — 16 October 2019 Product data sheet 1.
General description The PCF2003 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 ...


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