RE: nRF52840 vs. nRF52832 wake up from System Off mode?

Vidar Berg — Tue, 28 Apr 2020 12:28:17 GMT

Hi,

[quote user=""]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?[/quote]

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.}

[quote user=""] 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*?[/quote]

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