Abstract: SelecTIng the right ARM?processor-based microcontroller (MCU) for your applicaTIon can be a daunTIng task. With more than 125 ARM processor-based microcontrollers available, finding one with the right peripheral set and performance criteria could take extensive research. This white paper describes how the parametric search engine in the Device Database? which integrates with the RealView?Microcontroller Development Kit, can be used to quickly choose the right MCU for your applicaTIon. In addition, we show how the Device Database can be used to configure the tools in the RealView Microcontroller Development Kit for the chosen MCU part.