nRF52840 vs. nRF52832 wake up from System Off mode?

[samsam]

For nRF52832 I see in the datasheet:

I_{OFF_RAMOFF_GPIO}   System OFF, No RAM retention, Wake on GPIO,

While for  nRF52840  only “System OFF, no RAM retention, wake on reset” is listed – is the Wake on GPIO available for nRF52840 and what is the I_{OFF_RAMOFF_GPIO}   ?  Same as reset maybe?

 On some other brands uControllers  wakeup on GPIO is on long press of the dedicated On/Off button – can this (wake only on long press) will be achieved with nRF528*?

Thanks

[Vidar Berg]

Hi,

While for  nRF52840  only “System OFF, no RAM retention, wake on reset” is listed – is the Wake on GPIO available for nRF52840 and what is the I_{OFF_RAMOFF_GPIO}   ?  Same as reset maybe?

 Having wake on pin change does not increase the System OFF current so I_{OFF_RAMOFF_GPIO} == I_{OFF_RAMOFF_RESET. Wakeup from system off will always lead to a system reset.}

 On some other brands uControllers  wakeup on GPIO is on long press of the dedicated On/Off button – can this (wake only on long press) will be achieved with nRF528*?

 There is no support for this in HW, but you could add this logic to your startup code and just return to System OFF mode if the button is released too fast.

Best regards,

Vidar