jaearctic.blogg.se - Parallel communication protocols

With the progress in integrated circuit technology, the digital IC’s are becoming smaller and faster and as a result the transfer rates in Parallel Communication with multiple lanes have reached a bottle neck.

Olden day’s printers are the best example for external parallel communication. Parallel Data Transfer methods are faster and expensive as they needs more hardware and a lot of wires. This is possible because parallel data transfer uses multiple lanes or wires between the transmitter and receiver in order to transfer the data. In parallel data transfer, all the bits are transferred from the source to destination at once. Transfer of Digital Data from one device to another can be achieved in two ways: Parallel Data Transfer and Serial Data Transfer.

Brief Note on Parallel and Serial Communicationīrief Note on Parallel and Serial Communication.

The main reason for integrating the UART hardware in to microcontrollers is that it is a serial communication and requires only two wires for communication.īefore going in to further explanation of UART, how it works and steps involved in transmission and reception of data, we will try to recollect some information about Serial Communication and a small comparison between serial and parallel communications. All these devices communicated using UART.Įven though USB has replaced all types of communication standards on computers and other devices, UART is still being used in the above mentioned applications.Īlmost all microcontrollers have dedicated UART hardware built in to their architecture. If you remember older computer systems, devices like Mouse, Printer and Modem are connected using a heavy connectors at the back. Today, UART is being used in many applications like GPS Receivers, Bluetooth Modules, GSM and GPRS Modems, Wireless Communication Systems, RFID based applications etc.

UART is one of the most simple and most commonly used Serial Communication techniques. This is contrast to SPI or I2C, which are just communication protocols. The hardware for UART can be a circuit integrated on the microcontroller or a dedicated IC.

UART or Universal Asynchronous Receiver Transmitter is a dedicated hardware associated with serial communication.