topic Re: MPC8377 MVREF Design in PowerQUICC Processors https://community.nxp.com/t5/PowerQUICC-Processors/MPC8377-MVREF-Design/m-p/846373#M2636 <HTML><HEAD></HEAD><BODY><P><SPAN style="font-size: 13px;">I can not know what is exact reason of your temperature issue, however the "Design checklist" (AN3665) directly states: "</SPAN>Each of the MVREF1 and MVREF2 supply inputs must be connected through serial resistors of 200 Ohm." <SPAN style="font-size: 13px;">We strongly recommend to follow this requirement.</SPAN></P><P></P><P><SPAN style="font-size: 13px;">Regards,</SPAN></P><P><SPAN style="font-size: 13px;">Bulat</SPAN></P><P></P></BODY></HTML> Thu, 20 Sep 2018 12:22:22 GMT Bulat 2018-09-20T12:22:22Z MPC8377 MVREF Design https://community.nxp.com/t5/PowerQUICC-Processors/MPC8377-MVREF-Design/m-p/846372#M2635 <HTML><HEAD></HEAD><BODY><DIV dir="ltr"><SPAN lang="en"><SPAN>I designed and manufactured the SBC board using the MPC8377.</SPAN></SPAN></DIV><DIV dir="ltr"><SPAN lang="en"><SPAN>Sometimes memory errors occur at low temperatures (less than -30 degrees Celsius) and the system is not booting normally and can not boot</SPAN><SPAN style="display: none;"></SPAN><BR /></SPAN></DIV><DIV dir="ltr"> </DIV><DIV dir="ltr"><SPAN>Q) When 200 ohms is not applied to MVREF, can this cause the phenomenon?</SPAN><SPAN style="display: none;"></SPAN></DIV></BODY></HTML> Wed, 19 Sep 2018 11:49:24 GMT https://community.nxp.com/t5/PowerQUICC-Processors/MPC8377-MVREF-Design/m-p/846372#M2635 sollong-gos 2018-09-19T11:49:24Z Re: MPC8377 MVREF Design https://community.nxp.com/t5/PowerQUICC-Processors/MPC8377-MVREF-Design/m-p/846373#M2636 <HTML><HEAD></HEAD><BODY><P><SPAN style="font-size: 13px;">I can not know what is exact reason of your temperature issue, however the "Design checklist" (AN3665) directly states: "</SPAN>Each of the MVREF1 and MVREF2 supply inputs must be connected through serial resistors of 200 Ohm." <SPAN style="font-size: 13px;">We strongly recommend to follow this requirement.</SPAN></P><P></P><P><SPAN style="font-size: 13px;">Regards,</SPAN></P><P><SPAN style="font-size: 13px;">Bulat</SPAN></P><P></P></BODY></HTML> Thu, 20 Sep 2018 12:22:22 GMT https://community.nxp.com/t5/PowerQUICC-Processors/MPC8377-MVREF-Design/m-p/846373#M2636 Bulat 2018-09-20T12:22:22Z