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Is nrF52840 VDDH pin only used for REG0 LDO/DCDC regulator output

Oystein

Is nrF52840 VDDH pin only used for REG0 LDO/DCDC regulator output to generate VDD power for the GPIO circuitry?

or is VDDH power used to power some other internal circuits in the nrF52840?

BR

Øystein

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    Can I set the nrF52840 into NORMAL mode by connecting VDDH to VDD to a 1.8V power supply?

    From the datasheet page 61 block diagram it seems like VDDH only power the REG0 power stage and in NORMAL mode it should be ok to use 1.8V on the VDDH pin even though specified minum voltage is 2.5V. Which leads to my question, is the VDDH power needed for some other circuitry inside like maybe an RF amplifier stage, etc?

    Øystein

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  • 0

    Can I set the nrF52840 into NORMAL mode by connecting VDDH to VDD to a 1.8V power supply?

    From the datasheet page 61 block diagram it seems like VDDH only power the REG0 power stage and in NORMAL mode it should be ok to use 1.8V on the VDDH pin even though specified minum voltage is 2.5V. Which leads to my question, is the VDDH power needed for some other circuitry inside like maybe an RF amplifier stage, etc?

    Øystein

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