nrf52 power consumption system ON mode，have some Current burr？

RE: nrf52 power consumption system ON mode，have some Current burr？

826896167 — Mon, 21 Feb 2022 02:19:33 GMT

thanks you kenneth！

RE: nrf52 power consumption system ON mode，have some Current burr？

Kenneth — Thu, 17 Feb 2022 10:55:29 GMT

These spikes are likely the internal regulator in the nRF52-series operating in refresh mode, refresh mode will turn ON the regulator for short periods instead of continoustly be turned ON. This is to save power, you can find more information about "refresh mode" if you search here in devzone.

Best regards,
Kenneth

RE: nrf52 power consumption system ON mode，have some Current burr？

826896167 — Thu, 17 Feb 2022 07:53:20 GMT

hi kenneth:

Power the DK from a coin cell battery,That problem has been solved!

And there's another problem,I'm not sure what makes the little spear??

RE: nrf52 power consumption system ON mode，have some Current burr？

826896167 — Thu, 17 Feb 2022 01:57:39 GMT

Thanks you kenneth!

I used rtc app，modify flow code：

int main(void)
{

while (true)
{
//__SEV();
//__WFE();
__WFE();
}
}

the reset is：4-5 uA

And there's another problem,I'm not sure what makes the little spear??

thanks,Best regards.

RE: nrf52 power consumption system ON mode，have some Current burr？

Kenneth — Wed, 16 Feb 2022 13:48:12 GMT

Hi,

Can you just do a simple:

int main(void)
{
  while(1)
  {
    __WFE();
  }
}

Also make sure you read:
https://infocenter.nordicsemi.com/topic/ug_nrf52832_dk/UG/nrf52_DK/hw_meas_current.html

Best regards,
Kenneth