LECTURE 16 8250 UART : UNIVERSAL ASYNCHRONOUS RECEIVER TRANSMITTER

Serial communications is sufficiently complex that special chips have been designed to do the work of forming and timing the strings of bits that comprise serial data. Such a chip is called a universal asynchronous receiver transmitter or UART. Without UARTs, communications programming would be very complicated. The IBM family of microcomputers use the Intel 8250 UART. The Intel 8250 is a programmable Universal Asynchronous Receiver/Transmitter packaged in a 40- pin integrated circuit. ...