6.1.2 WAKE Button

If the J20 jumper is set between pins 2 and 3, clicking the WAKE button turns on the high-side transistor on the VBAT input supply line and this supply voltage is applied on the WAKE pin which starts device start-up. When the device is successfully powered on, disabling the WAKE button has no impact and the device continues to operate normally. If the WAKE button is still enabled and the device enters the OFF state because of some errors, the device automatically starts to wake up again. If the WAKE button is disabled and the device enters the OFF state because of some errors, the device stays in the OFF state, and the WAKE button must be clicked again to start the new power-up cycle.