My Profile
Order Status & History
RFQ History
Address Management
UART (Universal Asynchronous Receiver-Transmitter) is a serial communication protocol used for data exchange between electronic devices. Its principle is to transmit and receive signals by transferring bits and framing the data.
The purpose of UART is to enable data exchange between devices. It can send data to another device or receive data from another device using serial communication. UART is commonly used in computer peripherals, such as serial communication and Bluetooth communication.
Example of a UART frame:
In this diagram, one byte is sent, consisting of a start bit, followed by eight data bits (D0-7), and two stop bit, for a 11-bit UART frame. The number of data and formatting bits, the presence or absence of a parity bit, the form of parity (even or odd) and the transmission speed must be pre-agreed by the communicating parties. The "stop bit" is actually a "stop period"; the stop period of the transmitter may be arbitrarily long. It cannot be shorter than a specified amount, usually 1 to 2 bit times. The receiver requires a shorter stop period than the transmitter. At the end of each data frame, the receiver stops briefly to wait for the next start bit. It is this difference which keeps the transmitter and receiver synchronized.
The advantages of UART include:
1. Simplicity: UART implementation is relatively simple and does not require complex protocols and hardware support.
2. Low cost: UART requires only a small amount of hardware resources and can be implemented in many embedded systems.
3. Real-time performance: UART has a fast speed and can meet real-time data transmission requirements.
The disadvantages of UART include:
1. Slow transfer rate: UART communication speed is relatively slow and cannot meet the real-time transmission requirements of large amount of data.
2. Requires additional clock signal: UART requires an external clock signal, which limits applications with high clock requirements.
3. Does not support multi-point communication: UART usually only supports point-to-point communication and cannot achieve simultaneous communication among multiple devices.
Common industries where UART is used include but are not limited to:
1. Data exchange between electronic devices: UARTis commonly used for data transmission between computers, embedded systems, and sensors.
2. Industrial control: UART is often used in industrial automation control systems, such as PLCs, sensors, and drivers.
3. IoT (Internet of Things): UART is used for data transmission between IoT devices, such as sensor nodes and controllers.
It is worth noting that as technology continues to evolve, UART has been gradually replaced by faster and more powerful communication protocols, such as SPI, I2C, and CAN. Therefore, when choosing a communication protocol, it is important to consider the specific application requirements and characteristics to determine the most suitable protocol.
With years of deep cultivation in the industry, Heqingele is committed to building a smart procurement platform, providing customers with high-quality and cost-effective electronic components and comprehensive services. Heqingele's online mall offers over 12,000,000 products to choose from! Feel free to inquire about prices and datasheets!
