https://community.nxp.com/t5/LPC-Microcontrollers/lpc55s06-not-VDD-PMU-is-zero/m-p/1419993#M48021 <P>we are working on LPC55S06 controller but we are unable to detect controller in SWD ,so we checked VDD_PMU is zero we mounted same inductor, capacitor similar EVK .the volatge at LX also zero . please verify schematic let me know any issue in schematic.</P> Sat, 26 Feb 2022 04:44:09 GMT vishnu24 2022-02-26T04:44:09Z https://community.nxp.com/t5/LPC-Microcontrollers/lpc55s06-not-VDD-PMU-is-zero/m-p/1419993#M48021 <P>we are working on LPC55S06 controller but we are unable to detect controller in SWD ,so we checked VDD_PMU is zero we mounted same inductor, capacitor similar EVK .the volatge at LX also zero . please verify schematic let me know any issue in schematic.</P> Sat, 26 Feb 2022 04:44:09 GMT https://community.nxp.com/t5/LPC-Microcontrollers/lpc55s06-not-VDD-PMU-is-zero/m-p/1419993#M48021 vishnu24 2022-02-26T04:44:09Z https://community.nxp.com/t5/LPC-Microcontrollers/lpc55s06-not-VDD-PMU-is-zero/m-p/1420316#M48039 <P>Hi&nbsp;vishnu24&nbsp;</P> <P>Please make sure you have 3.3v input to VBAT_PMU and VBAT_DCDC. Measure these pins with multimeter to check.</P> <P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="ZhangJennie_0-1646032334525.png" style="width: 400px;"><img src="https://community.nxp.com/t5/image/serverpage/image-id/171926i06A63028B6AC2BA3/image-size/medium?v=v2&amp;px=400" role="button" title="ZhangJennie_0-1646032334525.png" alt="ZhangJennie_0-1646032334525.png" /></span></P> <P>Hope this helps,</P> <P>Jun Zhang</P> Tue, 01 Mar 2022 02:53:35 GMT https://community.nxp.com/t5/LPC-Microcontrollers/lpc55s06-not-VDD-PMU-is-zero/m-p/1420316#M48039 ZhangJennie 2022-03-01T02:53:35Z