FluxBench

UART

Universal Asynchronous Receiver-Transmitter - a serial communication protocol using two wires (TX and RX) for asynchronous data transfer.

protocol

UART

UART (Universal Asynchronous Receiver-Transmitter) is a serial communication protocol for asynchronous data transfer.

Definition

UART uses two wires: TX (transmit) and RX (receive) for point-to-point communication. No clock signal is needed - devices must agree on baud rate. Operates at standard Voltage levels (often 3.3V or 5V TTL).

Key Points

  • Two-wire interface (TX, RX)
  • Asynchronous (no clock)
  • Simpler than I2C or SPI for point-to-point
  • Common in debugging and GPS modules
  • Standard baud rates: 9600, 115200