Understanding UART Flashcard

Front

What does UART stand for?

Back

Universal Asynchronous Receiver Transmitter

Front

How many wires are used in UART for communication between transmitter and receiver?

Back

Two

Front

What is the idle state in UART?

Back

High state

Front

What is the purpose of the start bit in a UART frame?

Back

To indicate the beginning of user data

Front

What is the most common number of user data bits in a UART frame?

Back

Eight

Front

What is the purpose of the stop bit in a UART frame?

Back

To indicate the end of user data

Front

What is the purpose of the optional parity bit in a UART frame?

Back

To detect single bit errors

Front

What is the voltage level used to indicate a logical one in UART?

Back

High voltage level

Front

What is the voltage level used to indicate a logical zero in UART?

Back

Low voltage level

Front

What is the baud rate commonly used in UART?

Back

9600