Oscillator calibration method, electronic device and chip
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United States of America Patent
Stats
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Oct 17, 2023
Grant Date -
Mar 2, 2023
app pub date -
Aug 31, 2022
filing date -
Sep 1, 2021
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A method for calibrating a first clock signal output by an oscillation module to obtain a calibrated second clock signal includes obtaining a first count value by counting a third clock signal of an external device. A second count value is obtained by counting a scan signal of the oscillation module, and a first cycle ratio is obtained based on the first count value and the second count value. It is determined whether the first clock signal has a frequency deviation by comparing the first cycle ratio with a reference cycle ratio. A frequency division coefficient of the oscillation module is adjusted when the first clock signal has the frequency deviation, so that the oscillation module divides a frequency of the first clock signal according to the adjusted frequency division coefficient, thereby obtaining the calibrated second clock signal.
First Claim
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Family
| Country | kind | publication No. | Filing Date |
|---|---|---|---|
| CN | B | CN113691256 | Sep 01, 2021 |
| TW | B | TWI775596 | Sep 08, 2021 |
International Classification(s)
- 2022 Application Filing Year
- H03K Class
- 1998 Applications Filed
- 1198 Patents Issued To-Date
- 59.96 % Issued To-Date
Cited Art Landscape
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- 0 Citation Count
- H03K Class
- 0 % this patent is cited more than
- 2 Age
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