OBJECTIVE:
To understand the architecture, programming concepts and the interfacing techniques of the Programmable Communication Interface (8251-UART) by interfacing it with 89C51 microcontroller..
INTRODUCTION:
The 8251 is a USART (Universal Synchronous Asynchronous Receiver Transmitter) for serial data communication. As a peripheral device of a microcomputer system, the 8251 receives parallel data from the CPU and transmits serial data after conversion. This device also receives serial data from the outside and transmits parallel data to the CPU after conversion
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