sleep() [ Sleep ]

mode() (SystemSleepConfiguration)

SystemSleepMode

The are are three sleep modes:

  • STOP
  • ULTRA_LOW_POWER
  • HIBERNATE
STOP ULTRA_LOW_POWER HIBERNATE
Relative power consumption Low Lower Lowest
Relative wake options Most Some Fewest
Execution continues with variables intact  

To help decide which mode you should use, see Learn more about sleep modes.