8.2.4 Internal Power Domains

The following are several internal regulated power domains, each typically operating at a nominal voltage of 1.2V:

  • VDDCORE_BU: Powers the backup domain.
  • VDDCORE_SW: This is the main voltage domain for the CPU, bus, and most peripherals.
  • VDDCORE_RAM: This domain is used to retain the System SRAM.