Datasheet

24
11057BS–ATARM–13-Jul-12
SAM3X/A
24
11057BS–ATARM–13-Jul-12
SAM3X/A
Note: Backup Batteries Used
Note: 1. Restrictions
For USB, VDDUTMI needs to be greater than 3.0V.
For ADC, VDDANA needs to be greater than 2.0V.
For DAC, VDDANA needs to be greater than 2.4V.
2. VDDUTMI and VDDANA cannot be left unpowered.
5.4 Active Mode
Active mode is the normal running mode with the core clock running from the fast RC oscillator,
the main crystal oscillator or the PLLA. The power management controller can be used to adapt
the frequency and to disable the peripheral clocks.
5.5 Low Power Modes
The various low power modes of the SAM3X/A series are described below:
5.5.1 Backup Mode
The purpose of backup mode is to achieve the lowest power consumption possible in a system
which is performing periodic wake-ups to perform tasks but not requiring fast startup time
(< 0.5ms).
VDDIN
Voltage
Regulator
VDDOUT
Main Supply (1.8V-3.6V)
VDDCORE
Backup Batteries
VDDBU
VDDIO
VDDANA
VDDUTMI
VDDPLL
FWUP
SHDN