4.2.2 Various Power Configurations

Two different configurations are described below, depending on customer use.

• Single Supply—ATSAMA5D27-WLSOM1 can be supplied by only one input supply (for example, a 5V AC/DC wall adapter) and other input supplies can be connected to the internal 3.3V regulator VDD_3V3. All the PIO lines are supplied at 3.3V.
• Multiple Supplies—ATSAMA5D27-WLSOM1 can be supplied by 5V and by a backup battery. Some PIO lines are supplied by different LDOs for specific applications, such as an ISC camera or a high-speed SD card.