topic Re: KL03Z: Getting into VLLS0 from VLPR? in Kinetis Microcontrollers https://community.nxp.com/t5/Kinetis-Microcontrollers/KL03Z-Getting-into-VLLS0-from-VLPR/m-p/696821#M42856 <HTML><HEAD></HEAD><BODY><P>Sara</P><P></P><P>PMPROT is a protection register and not a control register. If you want to 'allow' all low power modes you can simply write it once after each reset to allow all of the modes that you will be using.</P><P></P><P>Eg.</P><P><STRONG>MC_PMPROT = (MC_PMPROT_AVLP | MC_PMPROT_ALLS | MC_PMPROT_AVLLS1 | MC_PMPROT_AVLLS2 | MC_PMPROT_AVLLS3); // allow all low power modes</STRONG></P><P></P><P>Regards</P><P></P><P>Mark</P></BODY></HTML> Mon, 02 Oct 2017 15:17:59 GMT mjbcswitzerland 2017-10-02T15:17:59Z KL03Z: Getting into VLLS0 from VLPR? https://community.nxp.com/t5/Kinetis-Microcontrollers/KL03Z-Getting-into-VLLS0-from-VLPR/m-p/696820#M42855 <HTML><HEAD></HEAD><BODY><P>Hello,</P><P></P><P>I'm having trouble getting from VLPR mode, where I stay most of the time, to VLLS0 mode. However, I read in the user's manual that the PMPROT register can only be written once. I would need to write to it to get to VLPR and then again to get into VLLS0.</P><P></P><P>Is there a way around this or am I misunderstanding the manual?</P><P></P><P>Thanks,</P><P></P><P>Sara</P></BODY></HTML> Mon, 02 Oct 2017 13:58:19 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/KL03Z-Getting-into-VLLS0-from-VLPR/m-p/696820#M42855 sarastout-grand 2017-10-02T13:58:19Z Re: KL03Z: Getting into VLLS0 from VLPR? https://community.nxp.com/t5/Kinetis-Microcontrollers/KL03Z-Getting-into-VLLS0-from-VLPR/m-p/696821#M42856 <HTML><HEAD></HEAD><BODY><P>Sara</P><P></P><P>PMPROT is a protection register and not a control register. If you want to 'allow' all low power modes you can simply write it once after each reset to allow all of the modes that you will be using.</P><P></P><P>Eg.</P><P><STRONG>MC_PMPROT = (MC_PMPROT_AVLP | MC_PMPROT_ALLS | MC_PMPROT_AVLLS1 | MC_PMPROT_AVLLS2 | MC_PMPROT_AVLLS3); // allow all low power modes</STRONG></P><P></P><P>Regards</P><P></P><P>Mark</P></BODY></HTML> Mon, 02 Oct 2017 15:17:59 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/KL03Z-Getting-into-VLLS0-from-VLPR/m-p/696821#M42856 mjbcswitzerland 2017-10-02T15:17:59Z Re: KL03Z: Getting into VLLS0 from VLPR? https://community.nxp.com/t5/Kinetis-Microcontrollers/KL03Z-Getting-into-VLLS0-from-VLPR/m-p/696822#M42857 <HTML><HEAD></HEAD><BODY><P>Thanks Mark! I wasn't thinking about it that way. That makes a lot of sense!</P><P></P><P>Sara</P></BODY></HTML> Mon, 02 Oct 2017 16:13:18 GMT https://community.nxp.com/t5/Kinetis-Microcontrollers/KL03Z-Getting-into-VLLS0-from-VLPR/m-p/696822#M42857 sarastout-grand 2017-10-02T16:13:18Z