3Which CPU to use?

3.1Overview

As stated in Chapter 2, the choice of CPU is very related to the choice of operating system. As an embedded developer, you may not always get to choose which CPU you will be working with. This may have been decided long ago in a previous project, or by someone else in the organization. Still, understanding the various parameters will help you get the best out of what you have, as well as make it easier for you to drive the choice of the next CPU. It will also enhance your dialogue with the digital designers.

Historically, the CPU was the basic chip executing code. Everything else was outside this in other chips. Then came the “microcontroller.” This was specifically made for smaller embedded systems, containing ...

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