Architects' Tech Alliance

Nov 6, 2019 · Fundamentals

Understanding UART, RS-232, RS-422, and RS-485 Serial Communication Standards

This article explains the fundamentals of UART as a universal asynchronous receiver/transmitter, compares the electrical and protocol characteristics of RS-232, RS-422, and RS-485 standards, and discusses their performance, wiring, and application considerations in embedded and industrial systems.