"SYSTEM OFF" on NRF52810 no RAM retention using NRF Connect SDK

[CRNorris]

Hi,

I'm using NRF Connect SDK (Zephyr) with NRF52810.

I've got the System Off sample from the Zephyr tree working on my board, but I'm not sure what current draw to expect.

There are various typical values given in the Product Specification in the "Sleep" section, such as "ON_RAMOFF_EVENT", "ON_RAMON_GPIOTEPORT", does anyone know which one matches what the System Off sample is doing?

Also are these measurements taken with the internal DC/DC converter in operation, or the LDO?

I'd like to validate my measurements against the expected values.

Thanks!

[Simonr]

Hi

There are two system OFF "modes" mentioned in the Product specification sleep section as well. OFF_RAMOFF_RESET and OFF_RAMON_RESET, depending on whether you're using RAM retention or not. The current consumption for an nRF52810 should be ~0.3uA in system OFF mode with RAM retention disabled.

Best regards,

Simon

[CRNorris]

The System Off sample wakes on a GPIO port event, not just reset, so I guess I would be looking for "System OFF, No RAM retention, Wake on GPIOTE PORT event"

That doesn't seem to match any of the entries in that section of the production specification. Is it the case that there are possible configurations which are not included in that list? Are they just examples?