Kit didático de baixo custo para o ensino de microcontroladores da família MCS-51 USB

Abstract

Technical, technologist, engineering and related courses in electronics use educational kits for teaching microcontrollers. The MCS-51 architecture is still widely used for this purpose, due to its characteristics such as CISC instruction set, extensive support, wide availability of both development tools and models for microcontrollers. This project presents the development of a new educational kit for teaching MCS-51 family microcontrollers, called P51USB. The inovation of this projet lies in its use of the AT89C5131A-M microcontroller. In addition to all MCS-51 characteristics, it has a USB Full Speed controller and some other peripherals. The presence of the USB controller allows the use of the kit without the need for any external circuits or serial and parallel ports to write the microcontroller’s memory and exempt the use of an external power supply. The P51USB kit also has an integrated analogic to digital converter,real time clock, LCD display bus and a serial port for debbuging. This saves time on mounting those circuits and helps focusing on learning the microcontroller. To ease the use of P51USB kit by students, tutorials detailing the operation of the kit have also been developed, as well as code samples for their key peripherals. The kit was used as a pilot project for classes of an Electronic Engineering course in the second half of the year 2013 on UTFPR Curitiba’s campus, obtaining a satisfactory evaluation by teachers and students.