FPGA Low Cost Microcontroller circuit with USB Interface for embedded System Applications M.Aldalbahi,M.Abouelela, B.Almashary

Abstract __ _ The universal serial bus (USB) has largely replaced the standard serial port to connect devices to a PC because it is simpler, more foolproof, and faster. But while USB makes connection easier for the user, it adds more design challenges. Many designers continue to use the UART (Universal Asynchronous Receiver Transmitter) with the standard serial port, waiting for products that make USB easier to implement. Some microcontroller providers integrate the USB hardware within the microcontroller chip but most of the commercial low cost microcontroller families are still not equipped with a USB. External arrangements can be applied to add USB interface to a given microcontroller circuit. This may be done through either, serial or parallel communication with the microcontroller. In this work, the design procedure fo