VDDCORE and VDDCPU Leakage Power

Leakage power is the power drawn by a digital circuit when this circuit is powered but has no activity (no clock). This power occurs mainly on core logic supplies for circuits built on advanced CMOS technologies.

On SAMA7G5 devices, leakage power should be considered only on VDDCORE and VDDCPU. It can be neglected for any other supply inputs. The device leakage power has the following properties:

• The leakage power increases exponentially with temperature and its contribution to the overall power starts to be significant for junction temperatures greater than 60°C.
• The leakage power increases exponentially with the supply voltage, therefore the supply voltage should be minimized whenever possible.