Explain connecting power supply rails with embedded system

Question

Illustrates the points to be considered when connecting power supply rails along with embedded system?

Answer 1

A processor may consist of more than two pins of Vss and Vdd.

Supply must separately power the external I/O driving ports, clock and timers,

By the supply there must be separate interconnections for pairs of Vdd and Vss pins analog ground analog input voltage lines and analog reference.