Mitigation of long wake-up delay of a crystal oscillator
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United States of America Patent
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Nov 21, 2017
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app pub date -
Jul 21, 2016
filing date -
Jul 21, 2016
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Abstract
An electronic circuit includes a first oscillator, a second oscillator and ancillary circuitry. The first oscillator is configured to generate a first clock signal and has a first wake-up delay. The second oscillator is configured to generate a second clock signal and has a second wake-up delay that is shorter than the first wake-up delay. The ancillary circuitry is configured to provide the second clock signal as an output clock signal during wake-up of the first oscillator, and, following the first wake-up delay, to provide the first clock signal as the output clock signal.
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