Datasheet

 2018 Microchip Technology Inc. Data Sheet Complete DS40002058A-page 29
ATxmega128A1U/ATxmega64A1U
11.3.3 Power-save Mode
Power-save mode is identical to power down, with one exception. If the real-time counter (RTC) is enabled, it will keep run-
ning during sleep, and the device can also wake up from either an RTC overflow or compare match interrupt.
11.3.4 Standby Mode
Standby mode is identical to power down, with the exception that the enabled system clock sources are kept running while
the CPU, peripheral, and RTC clocks are stopped. This reduces the wake-up time.
11.3.5 Extended Standby Mode
Extended standby mode is identical to power-save mode, with the exception that the enabled system clock sources are
kept running while the CPU and peripheral clocks are stopped. This reduces the wake-up time.