There are many applications for embedded systems that require them to be battery powered. From small IoT (short for internet of things) devices collecting data from sensors, pushing it into the cloud for processing, to autonomous vehicles and robots—these systems should be as power efficient as possible so that they can operate for a long time without a steady external power supply.
Power efficiency means the smart control of the power consumption of all parts of a system, from the peripheral devices to the memory and the processor. The efficiency of power control depends significantly on the choice of hardware components and the system design. If a processor does not support dynamic voltage control or a peripheral device cannot enter power-saving mode when idle, then not much can be done on the software side. If, however, hardware components...