6 Power Supply Connections and Timing Sequences

The SAMA5D27 SOM1 can be supplied in different ways depending on application needs.

Four power domains must be supplied and can be connected differently. The four different power connections are described below:
  • Power Configuration #1: All supplies are connected to the Main 3.3V Supply.
  • Power Configuration #2: Backup domain is connected to a coin-cell and the rest to the Main 3.3V Supply.
  • Power Configuration #3: Backup domain is connected to a coin-cell. Camera sensor is connected to a separate power supply and the rest to the Main 3.3V Supply.
  • Power Configuration #4: All supply domains are connected to separate power supplies.

For each power configuration, the power-on and power-off timing sequences to respect are described below.