Datasheet

25
8116J–AVR–06/2013
XMEGA A3B
Not recommended for new designs -
Use ATxmega256A3BU
Figure 13-1. Battery Backup Module and its power domain implementation
Power
switch
VCC
Level shifters / Isolation
VBAT
TOSC1
TOSC2
Power
supervisor
(BBPOD,
BBBOD,
BBPWR)
Failure
Monitor
XOSC
RTC
Backup
Registers
Main
power
supervision
Oscillator &
sleep
controller
FLASH,
EEPROM
& Fuses
CPU
&
Peripherals
Watchdog w/
independent
RCOSC
Internal
RAM
GPIO
XTAL2
XTAL1
OCD &
Programming
Interface