Advantages And Disadvantages Of Serial And Parallel Data Transmission

UART transmits data in the form of packets. UART has two pins for transmission purpose Tx and Rx pin. Generally, 9600 or 115200 baud rate is used by the microcontroller. Baud rate generator generates a speed ranging from 110 bps to 230400. Control logic will decide when to write or read. The transmit shift register and receiver shift register shift the bits to the left or right until a byte of data is sent or received. The baud rate decides at which speed Tx and Rx will send and receive the data.The transmit hold register holds the data to be transmitted and receive hold register holds the data which has been received.

Both the transmitter and receiver should have good handshaking between them as well as speed should be same so baud rate incorporated. Likewise, receiver consists of Receiver hold register, Receiver shift register and control logic. The transmitter consists of a Transmit hold register, Transmit shift register and control logic. UART consist of mainly two core components transmitter and receiver. It is an asynchronous type of communication which uses 1 start bit and 1 or 2 stop bits.

UART uses one wire to send the data and another wire to receive the data. An 8-bit serial data coming from the peripheral device is converted into the parallel form using serial to parallel conversion and parallel data coming from the CPU is converted using parallel to serial conversion. It is commonly used in the microcontroller to communicate with the peripheral. UART stands for Universal Asynchronous Receiver-Transmitter.

Advantages And Disadvantages Of Serial And Parallel Data Transmission