2.4 Total Power Dissipation

The total power dissipation of an IC is the sum of the power consumed by each power supply(1)(2) and it can be divided into two parts:

  • The power consumed by the core logic of the circuit: in the SAMA7G54 device, this core logic power is drawn by VDDCORE and VDDCPU rails. It accounts for the dynamic power and leakage power of the device logic gates and embedded memories.
  • The power consumed by analog circuits and digital I/Os: this is the power drawn by all the other power supply inputs.
Note:
  1. Refer to the table “Power Supply Inputs” in the Electrical Characteristics section of the device data sheet for a supply rail list.
  2. When counting the power consumed in a power supply, care should be taken to subtract any power transmitted to an external component that does not contribute to the “on-die” dissipation.