The main goal of the subject is to introduce the new era of 32bit microcontrollers to students, who are already familiar with the basics of embedded systems. The lectures briefly overview the main differences between 8bit and 32bit micros, and introduce the ARM Cortex M core series and the main microcontroller families based on these cores. The lectures overview the internal architecture of these microcontrollers and introduce their special complex peripherals like NVIC, DMA, USB. The software development process of such high-performance micros is also demonstrated during the lectures.