Power management is a hot topic – or maybe that should read “a cool topic” – among embedded developers of late. In the course of a recent conversation on the subject, I realized that there are, in effect, three kinds of power saving procedure that embedded software might effect:
- Use dynamic voltage and frequency scaling [DVFS] to tune the CPU performance to the needs of the moment.
- Disable [power down] currently unused peripheral circuitry.
- Make use of the CPU's low power modes. (more…)
