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What happens if NRF_CLOCK_LF_SRC_SYNTH is used with SoftDevice

Hello,

I have found out that we have shipped one product where NRF_CLOCK_LF_SRC_SYNTH was used together with the SoftDevice S132. I think at the time when it was implemented, someone deciced to select this clock source as the product is running with a power supply and the accuracy of the included crystal was not very good. So the intention was probably to save some power instead of using the High Frequency Clock directly.

Now, I have just read in the release notes that this clock source is not intended to be used with the BLE Stack, but on the other hand the product is running perfectly fine since a very long time now.

Is there anything serious that could happen from this clock source selection? Will it degrade as the product gets older? Or should everything be fine if the product works as intended?

Thank you,

Marius

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  • Hello Marius,

    There are no known problems with using the NRF_CLOCK_LF_SRC_SYNTH. The reason it is not listed as recommended has to with test coverage. We do not test it on the same level as we to with the crystal and RC oscillator.

    Best regards,

    Vidar

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  • Hello Marius,

    There are no known problems with using the NRF_CLOCK_LF_SRC_SYNTH. The reason it is not listed as recommended has to with test coverage. We do not test it on the same level as we to with the crystal and RC oscillator.

    Best regards,

    Vidar

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