SAM3X8E Atmel Corporation, SAM3X8E Datasheet - Page 22

• Manufacturer Part Number: SAM3X8E
• Manufacturer: Atmel Corporation

5.4
5.5
5.5.1
24
24
Active Mode
Low Power Modes
SAM3X/A
SAM3X/A
Backup Mode
Note:
Note:
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.
The various low power modes of the SAM3X/A series are described below:
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).
Backup Batteries Used
1. Restrictions
2. VDDUTMI and VDDANA cannot be left unpowered.
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.
Main Supply (1.8V-3.6V)
Backup Batteries VDDBU
SHDN
VDDUTMI
VDDANA
VDDIO
VDDIN
VDDOUT
VDDCORE
VDDPLL
FWUP
Regulator
Voltage
11057AS–ATARM–10-Feb-12
11057AS–ATARM–10-Feb-12