is there any chance to create a "wakeup irq" with pin P0.0 on the xmc1100 ? Any work around since only inputs seems to be "CCU40.IN0C" and "USIC0_CH0.DX2A" ?
Perhaps you can make use of the capture feature in CCU4 to generate an wake up signal. Of course, in this case the CCU4 has to be activated all the time.
