Questions about the clock frequency of NRF5340

Questions about the clock frequency of NRF5340https://devzone.nordicsemi.com/f/nordic-q-a/72071/questions-about-the-clock-frequency-of-nrf5340Hi there, I am wondering what is the clock frequency for the application core by default. 64Mhz or 128 Mhz? and is it possible to fix it for example at 64Mz? Thanks!en-USTelligent Community 13Fri, 26 Feb 2021 14:19:37 GMTRE: Questions about the clock frequency of NRF5340https://devzone.nordicsemi.com/thread/296586?ContentTypeID=1Fri, 26 Feb 2021 14:19:37 GMT137ad170-7792-4731-bb38-c0d22fbe4515:29b46cda-167f-46e0-9756-bedacde1c432Amanda Hsieh<p>Hi Botong, </p> <p><span>The application core clocks can be scaled from their respective HFCLK clocks. </span>The default <span>clock frequency </span>is 64Mhz. See <a title="Application core frequency scaling" href="https://infocenter.nordicsemi.com/topic/ps_nrf5340/chapters/clock/doc/clock.html?cp=3_0_0_3_10_0_0#concept_mcu_frequency_scaling">Application core frequency scaling</a>.</p> <p>-Amanda H.</p><div style="clear:both;"></div>