Enhancing the accuracy of standard embedded RTC module with random synchronization events and dynamic calibration

This paper presents a three-step calibration method for improving the accuracy of the standard crystal oscillator, which is running the embedded RTC (real time clock) module in a standalone not networked sensor device. The first is the analysis and verification of the hardware design. The second step includes implementation of the static calibration procedure where special attention is given to the power use. In the last step the dynamic calibration procedure is implemented, based on the random synchronization events. The developed method should offer a mix of good stability and power efficiency, small footprint and competitive price.

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Zaprezentowano metodę kalibracji i poprawy dokładności generatora wykorzystywanego we wbudowanym module zegara RTC (real time clock).

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Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.