Figure 5-3. Backup Batteries Used
FWUP
SHDN
Backup Batteries VDDBU
VDDUTMI
VDDANA
VDDIO
Main Supply (1.62V-3.6V)
VDDIN
VDDOUT
Voltage
Regulator
VDDCORE
VDDPLL
Note:
Restrictions
With Main Supply < 2.0 V, USB and ADC are not usable.
With Main Supply ≥ 2.4V and < 3V, USB is not usable.
With Main Supply ≥ 3V, all peripherals are usable.
18 SAM3U Series
6430F–ATARM–21-Feb-12