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  • Case ID: 234301
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Power reset question.

hongpal

Hello, Nordic!

I'm developing with nrf52840, s340, sdk 15.3.0 in my customboard

Anyway, recently, I have one problem about reset.

My device sometimes has rested and I got power reset reason is 0.

I found that it is because of por or bor.

My device is using high mode and vdd is 1.8 V

I don't know how to solve this problem.

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    Hi

    The VDD output can be configured in the REGOUT0 register. We do not have a configuration at 2.5V, but you can set it to both 2.4V and 2.7V. Please see the Infocenter for more on this register. Keep in mind that REGOUT0 is in the UICR (flash), so it must be written to flash either via a debugger or programmatically in the same way you write to flash, and won't take effect until you reset the board.

    Best regards,

    Simon

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  • 0

    Hi

    The VDD output can be configured in the REGOUT0 register. We do not have a configuration at 2.5V, but you can set it to both 2.4V and 2.7V. Please see the Infocenter for more on this register. Keep in mind that REGOUT0 is in the UICR (flash), so it must be written to flash either via a debugger or programmatically in the same way you write to flash, and won't take effect until you reset the board.

    Best regards,

    Simon

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