What is UART?
A circuit for asynchronous serial communication without a clock wire, in which both sides agree on a baud rate and characters are framed by start and stop bits.
Field: Embedded Systems & Firmware
UART in the explanations
A UART communicates asynchronously over two wires, transmit and receive (plus ground).
What is a characteristic of serial communication with a UAR…UART links two devices asynchronously without a clock, with simple wiring and software.
Which comparison of UART, SPI and I2C is correct?A microcontroller integrates a CPU with flash for program storage, working RAM, timers, ADCs and communication interfaces (UART, SPI, I²C, CAN, etc.) on one chip.
Which LSI integrates a CPU, memory and peripherals such as …
Questions that mention UART (6)
- What is a characteristic of serial communication with a UART?
- On a 115200 bps UART using 8 data bits, no parity and 1 stop bit (8N1), roughly how many bytes can be sent per second?
- A small baud-rate mismatch between UART transmitter and receiver can garble characters. Why is the tolerance limited to roughly a few percent?
- Which comparison of UART, SPI and I2C is correct?
- Which LSI integrates a CPU, memory and peripherals such as timers and ADCs on one chip and is used to control appliances and equipment?
- What is the role of a bootloader in an embedded device?
Related terms
SPI Baud rate I2C Microcontroller Bootloader Brown-out detection Contact bounce Debouncing Duty cycle GPIO