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Forum Post: RE: AM2732: How to configure the value of PMIC(LP876242) register into NVM to permanently take effect after being configured once?

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Hi, [quote userid="568853" url="~/support/microcontrollers/arm-based-microcontrollers-group/arm-based-microcontrollers/f/arm-based-microcontrollers-forum/1360409/am2732-how-to-configure-the-value-of-pmic-lp876242-register-into-nvm-to-permanently-take-effect-after-being-configured-once"]My goal is to configure the value of the 0x2F register into NVM to make it permanently effective[/quote] This is only possible by doing update to the NVM. NVM can be updated using GUI. See below application note and user guide on how to update NVM. 1. Scalable PMIC NVM update Guide: https://www.ti.com/lit/pdf/slvaf93 2. Scalable PMIC's GUI user's Guide: https://www.ti.com/lit/pdf/slvubt8 What you are trying to do is to change it on the fly which is very much possible to do but that update exists as long the device remains powered up. Once the device re power cycle or get hard reset for any reason, the device would turn to default NVM settings. So either you do this change in your application software during initialization after device start up every time there is device re-power cycle or hard reset or change it permanently making NVM update. Br, Ishtiaque

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