current consumption of nrf5340 when there is no firmware loade

RE: current consumption of nrf5340 when there is no firmware loade

Vidar Berg — Fri, 31 Jul 2026 12:08:10 GMT

Hi,

After a reset, the CPU frequency will always be 64 MHz using the HFINT with the LDO regulator selected. We don't provide numbers for this exact scenario in the PS, but I measured this on an nRF5340 DK here on my desk using a PPK2 and measured an average current of around 5.7 mA.

Best regards,

Vidar

RE: current consumption of nrf5340 when there is no firmware loade

Brayan P — Fri, 31 Jul 2026 06:45:44 GMT

Thanks, that sounds correct. validated that on the nrf5340 DK

RE: current consumption of nrf5340 when there is no firmware loade

Turbo J — Fri, 31 Jul 2026 06:02:32 GMT

The lower CoreMark figures assume DCDC operation - which is enabled by application code. No app, no DCDC switching mode.

Thus I believe you need to use the highest value here with the LDO enabled, it should be a closer approximation.