Introduction to Microcontrollers

Introduction to Microcontrollers

Gunther Gridling, Bettina Weiss

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This text has been developed for the introductory courses on microcontrollers taught by the Institute of Computer Engineering at the Vienna University of Technology. It introduces undergraduate students to the ﬁeld of microcontrollers – what they are, how they work, how they interface with their I/O components, and what considerations the programmer has to observe in hardware-based and embedded programming. This text is not intended to teach one particular controller architecture in depth, but should rather give an impression of the many possible architectures and solutions one can come across in today’s microcontrollers. We concentrate, however, on small 8-bit controllers and their most basic features, since they already offer enough variety to achieve our goals.

Summary

This textbook introduces the fundamentals of microcontrollers with an emphasis on how they work, how they interface with I/O, and the constraints programmers face in hardware-oriented embedded programming. It focuses on small 8-bit controllers to illustrate common architectures, peripherals, and programming techniques that underpin embedded firmware and bare-metal development.

Key Takeaways

Explain the basic architecture and operating principles of microcontrollers, especially 8-bit families.
Implement low-level I/O tasks including GPIO, timers, ADC, PWM, and interrupt-driven routines in embedded code.
Design simple firmware structures and data flows appropriate for resource-constrained devices.
Diagnose common hardware–software integration issues and choose appropriate interfacing techniques and protocols.

Who Should Read This

Undergraduate students and early-career embedded engineers seeking a practical, hardware-focused introduction to microcontroller architecture, peripheral interfacing, and basic firmware techniques.

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