Specifications

Mechanical and Electrical Specifications

B.2.2 Power estimation

Table B-3 shows the maximum power requirements.

B.2.3 Power sequencing

There is an internal parasitic diode path from core voltage to I/O voltage. If the lower

core voltage is powered up earlier than the higher I/O voltage, current flow through the

parasitic diode can cause latchup.

To prevent latchup, ensure that the higher I/O voltage is powered on before the core

voltage.

Caution

If you cannot ensure that the I/O voltage is always higher than the core voltage, use a

low-voltage drop Schottcky diode between the two supplies (anode to VDDC and

cathode to VDDIO).

Table B-3 Power estimate

Description Power

Total Logic, RAM and Clock Tree Power 1 W

Total I/O Power 3.5W

Total 4.5 W