System off current consumption on nRF52810

[Arthur_Melkumov]

Hi. I'm evaluating the nRF52810 chip by developing on the nRF52-DK (based in nRF52832 chip). As noted in this chapter https://infocenter.nordicsemi.com/topic/sdk_nrf5_v17.0.0/nrf52810_user_guide.html - it's possible to emulate nRF52810 chip on the nRF52832 chip by using corresponding code and softdevice. So I need to evaluate the power consumption in the deepest sleep mode (System Off). But I found some difference between Electrical specifications of this two chips in the tables of sleep modes and power consumptions:

For nRF52832 is: 

and for nRF52810 is:

So, if I understand correctly - are the sleep modes different on these two microcircuits? For example, the "IOFF_RAMOFF_GPIO" sleep mode does not exist on the nRF52810 chip? And if so, is the measured current on the nRF52832 correct by emulating the nRF52810?

[Simonr]

Hi

It should be possible to set the nRF52810 into a power state where the system and RAM retention is off, and that lets it wake up from a GPIO event, but it is not mentioned in the PS (likely because it hasn't been tested). However the current draw should be similar to that of the nRF52832 and the System OFF, No RAM retention, Wake on reset. 

The measured current on an nRF52832 emulating the nRF52810 will be correct as the overall current consumption on the nRF52832 and nRF52810 is very similar in the first place.

Best regards,

Simon

[Arthur_Melkumov]

Great! Thank you for the answer