ATXMEGA128B1 Datasheet, PDF (22/138 Pages) ATMEL Corporation – 8/16-bit Atmel XMEGA B1 Microcontroller

11.3.3 Power-save Mode
Power-save mode is identical to power down, with two exceptions:
1. If the real-time counter (RTC) is enabled, it will keep running during sleep, and the device can also wake up from
either an RTC overflow or compare match interrupt.
2. If the liquid crystal display controller (LCD) is enabled, it will keep running during sleep, and the device can wake
up from LCD frame completed 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, RTC and LCD 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.
XMEGA B1 [DATASHEET] 22
8330C–AVR–07/2012