https://devzone.nordicsemi.com/f/nordic-q-a/49525/wake-from-system-off-mode-with-usb-vbusI have a custom nRF52840 board that I am implementing the Open Bootloader (from SDK 15.3). Push Button/Power control is handled by the STM6601 device. It keeps the power ON only when the PSHOLD line is kept HIGH. PSHOLD is driven by a GPIO. The problemen-USTelligent Community 13Tue, 09 Jul 2019 05:36:55 GMThttps://devzone.nordicsemi.com/thread/197264?ContentTypeID=1Tue, 09 Jul 2019 05:36:55 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c11ac8d7-abcb-45c5-bb7f-4276aecb1833DamonKelly<p>Never mind -- I solved it.</p> <p>I had several inputs (from sensors etc...) that had Sense enabled, thus the Detect latch was set on entering System Off mode.</p> <p>This caused the wake up, not Vbus.</p><div style="clear:both;"></div>