6.3.1 Sleep Mode
The DAC can do conversions in Active or Idle modes, and will continue the conversions in standby sleep mode if the RUNSTDBY bit in the DACCTRLx register is set. Otherwise, the DACx will stop conversions.
If DACx conversion is stopped in standby sleep mode, DACx is disabled to reduce power consumption. When exiting standby sleep mode, DACx is enabled therefore startup time is required before starting a new conversion.