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Three of the following can wake a device from deep sleep. The exception is

  • A.a level change on a configured pin
  • B.a watchdog timer overflow
  • C.a completed DMA transfer
  • D.a real time clock alarm

Answer: C

The DMA controller's clock is stopped along with almost everything else, so no transfer is in progress to complete. The real time clock, the wake pins and the independent watchdog all run from a low frequency oscillator that survives the mode.

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