ATSAM3U4EA-AU Datasheet, PDF (16/61 Pages) ATMEL Corporation – AT91ARM M3 Cortex-based Processor

Figure 5-1. Single Supply
VDDBU
VDDUTMI
VDDANA
VDDIO
Main Supply (1.62V-3.6V)
VDDIN
VDDOUT
Voltage
Regulator
VDDCORE
VDDPLL
Note:
Restrictions
With Main Supply < 2.4 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.
16 SAM3U Series
6430BS–ATARM–01-Sep-09