LPC MicrocontrollersのトピックLPC55S69 : power down main oscillator https://community.nxp.com/t5/LPC-Microcontrollers/LPC55S69-power-down-main-oscillator/m-p/1002314#M39368 <HTML><HEAD></HEAD><BODY><P>Hello !</P><P></P><P>I practice with Crystal-less clock configuration and haven't fins how -to powerdown main external oscillator.</P><P></P><P>For 32Khz one :&nbsp;POWER_EnablePD(kPDRUNCFG_PD_XTAL32K); /* Powered down the XTAL 32 kHz RTC oscillator */</P><P>But how-to power down main XTAL ?</P><P></P><P>Regards,</P><P>Eugene</P></BODY></HTML> Fri, 20 Dec 2019 07:23:23 GMT EugeneHiihtaja 2019-12-20T07:23:23Z LPC55S69 : power down main oscillator https://community.nxp.com/t5/LPC-Microcontrollers/LPC55S69-power-down-main-oscillator/m-p/1002314#M39368 <HTML><HEAD></HEAD><BODY><P>Hello !</P><P></P><P>I practice with Crystal-less clock configuration and haven't fins how -to powerdown main external oscillator.</P><P></P><P>For 32Khz one :&nbsp;POWER_EnablePD(kPDRUNCFG_PD_XTAL32K); /* Powered down the XTAL 32 kHz RTC oscillator */</P><P>But how-to power down main XTAL ?</P><P></P><P>Regards,</P><P>Eugene</P></BODY></HTML> Fri, 20 Dec 2019 07:23:23 GMT https://community.nxp.com/t5/LPC-Microcontrollers/LPC55S69-power-down-main-oscillator/m-p/1002314#M39368 EugeneHiihtaja 2019-12-20T07:23:23Z Re: LPC55S69 : power down main oscillator https://community.nxp.com/t5/LPC-Microcontrollers/LPC55S69-power-down-main-oscillator/m-p/1002315#M39369 <HTML><HEAD></HEAD><BODY><P>Hi, Eugene,</P><P>pls refer to the Table 292&nbsp; in User Manual for LPC55S69.</P><P>In other words, you can set the PDEN_XTAL32K in Power configuration register 0 to power down the external 32K oscillator.</P><P>Hope it can help you</P><P>BR</P><P>Xiangjun Rong</P><P><span class="lia-inline-image-display-wrapper" image-alt="pastedImage_2.png"><img src="https://community.nxp.com/t5/image/serverpage/image-id/99536i42ED01FB2FE71E45/image-size/large?v=v2&amp;px=999" role="button" title="pastedImage_2.png" alt="pastedImage_2.png" /></span></P></BODY></HTML> Tue, 24 Dec 2019 09:13:59 GMT https://community.nxp.com/t5/LPC-Microcontrollers/LPC55S69-power-down-main-oscillator/m-p/1002315#M39369 xiangjun_rong 2019-12-24T09:13:59Z