INDUSTRY COMPONENT

UART (Universal Asynchronous Receiver/Transmitter)

UART is a hardware device for asynchronous serial communication in industrial systems, enabling data exchange between microcontrollers and peripherals.

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Component Specifications

Definition
The Universal Asynchronous Receiver/Transmitter (UART) is an integrated circuit or module that facilitates asynchronous serial communication by converting parallel data from a CPU into a serial bit stream for transmission, and vice versa for reception. It operates without a shared clock signal, using start and stop bits to frame data packets, making it fundamental for point-to-point communication in industrial automation, embedded systems, and legacy equipment interfaces.
Working Principle
UART works by transmitting data as a series of bits over a single wire, with each character framed by a start bit (logic low), data bits (typically 5-9 bits), optional parity bit for error checking, and stop bits (logic high). The receiver samples the data line at a predefined baud rate to synchronize and decode the incoming stream, relying on timing rather than a clock signal. It handles flow control via hardware signals like RTS/CTS or software methods to prevent data loss.
Materials
Typically constructed from silicon-based semiconductor materials (e.g., CMOS or TTL logic), housed in plastic or ceramic IC packages (e.g., DIP, SOIC). Connectors may use copper alloys with gold or tin plating for corrosion resistance.
Technical Parameters
  • Parity None, Even, Odd
  • Baud Rate 110 to 115200 bps (common industrial range)
  • Data Bits 5 to 9 bits
  • Stop Bits 1, 1.5, or 2 bits
  • Voltage Levels TTL (0-5V), RS-232 (±3 to ±15V), RS-422/485 (differential)
  • Operating Temperature -40°C to 85°C (industrial grade)
Standards
ISO/IEC 7816, DIN 66020, EIA/TIA-232-F, EIA/TIA-422, EIA/TIA-485

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for UART (Universal Asynchronous Receiver/Transmitter).

UART serial communication asynchronous transmission industrial automation microcontroller interface RS-232 baud rate data transmission embedded systems UART (Universal Asynchronous Receiver/Transmitter) UART (Universal Asynchronous Receiver/Transmitter) in Computer, Electronic and Optical Product Manufacturing

Parent Products

This component is used in the following industrial products

Serial Communication Interface

A hardware and software interface that enables serial data transmission between devices using protocols like RS-232, RS-485, or UART.

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Serial Interface

A communication interface that transmits data sequentially, one bit at a time, over a single channel.

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Engineering Analysis

Risks & Mitigation
  • Electromagnetic interference (EMI) disrupting signal integrity
  • Baud rate mismatches causing data corruption
  • Ground loops leading to voltage spikes
  • Limited error correction in basic implementations
FMEA Triads
Trigger: Noise or voltage fluctuations on communication lines
Failure: Data corruption or loss during transmission
Mitigation: Use shielded cables, add ferrite beads, and implement error-checking protocols
Trigger: Incorrect baud rate configuration
Failure: Communication failure between devices
Mitigation: Validate settings during installation and use auto-baud detection if supported
Trigger: Connector corrosion or physical damage
Failure: Intermittent or broken connections
Mitigation: Apply protective coatings, use industrial-grade connectors, and schedule regular maintenance

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Signal timing tolerance typically ±2% of baud rate for reliable synchronization
Test Method
Verified using oscilloscopes for signal integrity, protocol analyzers for data accuracy, and environmental testing per IEC 61000-4 for EMI resistance.

Buyer Feedback

★★★★☆ 4.8 / 5.0 (12 reviews)

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Frequently Asked Questions

What is the difference between UART and USART?

UART supports only asynchronous communication, while USART (Universal Synchronous/Asynchronous Receiver/Transmitter) can handle both asynchronous and synchronous modes, making it more versatile for clocked protocols.

How does UART handle errors in industrial environments?

UART uses parity bits for basic error detection and may incorporate hardware flow control (e.g., RTS/CTS) to manage data flow, but it lacks advanced error correction; higher-level protocols are often added for reliability in noisy settings.

Can UART be used for long-distance communication?

Yes, with transceivers like RS-422 or RS-485, UART can support distances up to 1200 meters, making it suitable for industrial networks, though it's inherently designed for short-range links.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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