topic Launch MKW31Z512 Problem in Kinetis Microcontrollers https://community.nxp.com/t5/Kinetis-Microcontrollers/Launch-MKW31Z512-Problem/m-p/749756#M45646 <HTML><HEAD></HEAD><BODY><P>Good afternoon. I encountered a problem with CPU startup</P><P>The controller is under the following scheme.</P><P><span class="lia-inline-image-display-wrapper" image-alt="^5A007FA7435E050411E2D827C89E06EA7DC94A6E9158090DD2^pimgpsh_fullsize_distr.png"><img src="https://community.nxp.com/t5/image/serverpage/image-id/34105i51CA766FDB416196/image-size/large?v=v2&amp;px=999" role="button" title="^5A007FA7435E050411E2D827C89E06EA7DC94A6E9158090DD2^pimgpsh_fullsize_distr.png" alt="^5A007FA7435E050411E2D827C89E06EA7DC94A6E9158090DD2^pimgpsh_fullsize_distr.png" /></span></P><P>Schematic was imported from @frdm-kw41z board schematic</P><P>But at startup there are problems such as - lack of generation on quartz, resets twitch with a frequency of 10 kilohertz. The interface SDW works, BUCK MODE also works, there is a voltage of 1.8 and 1.5 volts. Mcu is MKW31Z512</P><P>Is anything&nbsp; missing on this schematic or something wrong?</P><P>I cannot launch controller well!</P></BODY></HTML> Wed, 27 Dec 2017 12:47:09 GMT vitaliycheban 2017-12-27T12:47:09Z Launch MKW31Z512 Problem https://community.nxp.com/t5/Kinetis-Microcontrollers/Launch-MKW31Z512-Problem/m-p/749756#M45646 <HTML><HEAD></HEAD><BODY><P>Good afternoon. I encountered a problem with CPU startup</P><P>The controller is under the following scheme.</P><P><span class="lia-inline-image-display-wrapper" image-alt="^5A007FA7435E050411E2D827C89E06EA7DC94A6E9158090DD2^pimgpsh_fullsize_distr.png"><img src="https://community.nxp.com/t5/image/serverpage/image-id/34105i51CA766FDB416196/image-size/large?v=v2&amp;px=999" role="button" title="^5A007FA7435E050411E2D827C89E06EA7DC94A6E9158090DD2^pimgpsh_fullsize_distr.png" alt="^5A007FA7435E050411E2D827C89E06EA7DC94A6E9158090DD2^pimgpsh_fullsize_distr.png" /></span></P><P>Schematic was imported from @frdm-kw41z board schematic</P><P>But at startup there are problems such as - lack of generation on quartz, resets twitch with a frequency of 10 kilohertz. The interface SDW works, BUCK MODE also works, there is a voltage of 1.8 and 1.5 volts. Mcu is MKW31Z512</P><P>Is anything&nbsp; missing on this schematic or something wrong?</P><P>I cannot launch controller well!</P></BODY></HTML> Wed, 27 Dec 2017 12:47:09 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/Launch-MKW31Z512-Problem/m-p/749756#M45646 vitaliycheban 2017-12-27T12:47:09Z Re: Launch MKW31Z512 Problem https://community.nxp.com/t5/Kinetis-Microcontrollers/Launch-MKW31Z512-Problem/m-p/749757#M45647 <HTML><HEAD></HEAD><BODY><P>Hello,&nbsp;</P><P></P><P>I replied you in the internal case you entered with some questions.&nbsp; :smileyhappy:&nbsp;</P><P></P><P>Regards,&nbsp;</P><P>Estephania&nbsp;</P></BODY></HTML> Wed, 03 Jan 2018 15:24:20 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/Launch-MKW31Z512-Problem/m-p/749757#M45647 stephanie_m 2018-01-03T15:24:20Z