topic K82: MPU power management in Kinetis Microcontrollers https://community.nxp.com/t5/Kinetis-Microcontrollers/K82-MPU-power-management/m-p/900056#M52999 <HTML><HEAD></HEAD><BODY><P>Hello !</P><P></P><P>I can see that amount of used MPU regions has effect to power consumption:</P><P>"</P><P>Disabling the MPU by clearing CESR[VLD] minimizes power dissipation. To minimize<BR />the power dissipation of an enabled MPU, invalidate unused region descriptors by<BR />clearing the associated RGDn_Word3[VLD] bits.</P><P>"</P><P></P><P>How large effect for power consumption are ?</P><P>Does this valid for RUN mode or even in LLS3 mode can be some effect ?</P><P></P><P>Regards,</P><P>Eugene</P></BODY></HTML> Fri, 03 May 2019 06:14:31 GMT EugeneHiihtaja 2019-05-03T06:14:31Z K82: MPU power management https://community.nxp.com/t5/Kinetis-Microcontrollers/K82-MPU-power-management/m-p/900056#M52999 <HTML><HEAD></HEAD><BODY><P>Hello !</P><P></P><P>I can see that amount of used MPU regions has effect to power consumption:</P><P>"</P><P>Disabling the MPU by clearing CESR[VLD] minimizes power dissipation. To minimize<BR />the power dissipation of an enabled MPU, invalidate unused region descriptors by<BR />clearing the associated RGDn_Word3[VLD] bits.</P><P>"</P><P></P><P>How large effect for power consumption are ?</P><P>Does this valid for RUN mode or even in LLS3 mode can be some effect ?</P><P></P><P>Regards,</P><P>Eugene</P></BODY></HTML> Fri, 03 May 2019 06:14:31 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/K82-MPU-power-management/m-p/900056#M52999 EugeneHiihtaja 2019-05-03T06:14:31Z Re: K82: MPU power management https://community.nxp.com/t5/Kinetis-Microcontrollers/K82-MPU-power-management/m-p/900057#M53000 <HTML><HEAD></HEAD><BODY><P>Hi Eugene,</P><P>1. When MPU work, it has power consumption. But there is no such day. I think it is according to how it access the protected area.</P><P>2. MPU module needn't clock. When XBS stop, it also stop. It will not dissipate power in low power stop mode.</P><P></P><P>Regards,</P><P>Jing</P></BODY></HTML> Sun, 05 May 2019 09:31:50 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/K82-MPU-power-management/m-p/900057#M53000 jingpan 2019-05-05T09:31:50Z