75. Sleep Mode with Periodic Wake-Up

Design a system with the following functionality:

• The microcontroller will be in power-saving mode to reduce power consumption.
• After every 1 minute:
  • Read the ADC value from a potentiometer.
  • Print the ADC value on the serial terminal (e.g., PuTTY, Arduino IDE).
  • Return to power-saving mode after completing the task.
• The system repeats the process every 1 minute.

NOTE: To wake up the microcontroller from power-saving mode, multiple approaches can be used. However, choose a method that is most power-efficient and provides high time accuracy.