2397452_en-US

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2397452_en-US

2397452_en-US

Crystal oscillator waveform abnormality

Hello, @lukaszadrapa

Our company is using your FS32K144HFT0MLHT MCU.

The waveform is abnormal when using an 8MHz passive crystal oscillator (AV08000009). Is this waveform acceptable for your company's MCU?

Will it affect the normal operation of the MCU?


IMG_20260718_141710.jpg

Re: 晶振波形异常

Hi @Kyp 


The oscilloscope screenshot does not appear to show the actual 8 MHz crystal waveform. The displayed frequency (~256 Hz) is inconsistent with the expected oscillator frequency and is most likely caused by aliasing due to the selected oscilloscope timebase and sampling rate. Therefore, it is not possible to assess the crystal oscillator quality from this measurement alone. A significantly faster timebase should be used to observe the actual oscillator waveform.


Regards,

Lukas

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