nRF54L05 power consumption at sleep mode but comparator still working

[Eric Duong]

Hi,

For a meter application with battery, I want MCU is sleeping but comparator still working to count a pulse input (freq <100khz)

Can Nordic IC can support this idea and how power consumption at this stage?

Thanks,

Brgs,

Eric.

[Sigurd Hellesvik]

Hi,

Do you want the Comparator to wake up the device from sleep?

Can Nordic IC can support this idea and how power consumption at this stage?

I will have a look and see what I can find on this.
Will get back to you in January.

Regards,
Sigurd Hellesvik

[AlannaRohan]

[deleted]

[Eric Duong]

Hi,

could you share the example code for this ?

due to 54L05 sample is not available right now, I will test on nrf52833-DK.

Brgs,

Eric.

[Sigurd Hellesvik]

I removed the spam comment, which removed your answer as well. To repost your questions here:

"

Could you share the example code for this ?

due to 54L05 sample is not available right now, I will test on nrf52833-DK.

"

I will see what I can find

[Sigurd Hellesvik]

Can Nordic IC can support this idea and how power consumption at this stage?

Got an answer for this one:

Expected current consumption for System On Idle mode (32KB RAM retention) with COMP enabled in Low, Normal and High power mode (MODE:SP) is 44uA, 46uA and 50uA at 25 degrees Celsius and 3.0 volt supply voltage respectively.

Sigurd Hellesvik said:

Could you share the example code for this ?

due to 54L05 sample is not available right now, I will test on nrf52833-DK.

See  Using comparator functions in Zephyr and NRF Connect .

To use nrfx in nRF Connect SDK, see the nrfx use example.