8.4.1 Power-Down and Sleep Modes

Power-down and sleep modes are provided to allow the user to reduce the power consumption of the device without disabling power supplies. Both modes reduce power consumption by the same amount but they differ in the amount of time required to return to normal operation. Upon changing from Power Down back to Normal operation, an ADC calibration routine is performed. Waking from sleep mode does not perform ADC calibration (see ADC Core Calibration for more details). Neither power-down mode nor sleep mode resets configuration registers.