A Comparative Analysis of Synchronous USART And Asynchronous UART Communication Protocols

Meiting Dong

doi:10.54097/hm6hre11

Authors

Meiting Dong

DOI:

https://doi.org/10.54097/hm6hre11

Keywords:

Stm32f103zet6 microcontroller, USART, UART, Serial communication.

Abstract

In contemporary applications, the integration of the STM32F103ZET6 microcontroller with various peripherals is indispensable, emphasizing the critical role of serial communication in data transmission between the microcontroller and these peripherals. This study delineates the distinctions between Universal Synchronous Asynchronous Receiver-Transmitter (USART) and Universal Asynchronous Receiver-Transmitter (UART) within the context of USART synchronous communication. The superiority of USART is underscored by its utilization of a uniform clock and identical baud rate for simultaneous and synchronous transmission, enhancing data transfer efficiency significantly. This methodology facilitates the transmission of larger data quantities concurrently and mitigates data loss during prolonged transmission, a prevalent issue in UART asynchronous communication. Additionally, USART preserves essential functionalities such as the detection of data boundaries, automatically discerning the initiation and termination of individual data frames, which guarantees the uninterrupted reception and transmission of data. This analysis is pivotal for professionals seeking optimized communication protocols in microcontroller-based systems.

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