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Volume 12, Issue 5 (May 2026)

Design Of Uart-transmitter Using Fsm In Verilog Hdl

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Volume 12 Issue 07

July 2026

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Author(s)

Ahalya S Alagulakshmi P Jayasri P Maha lakshmi S Dr.R.Sudha

Abstract

This Project Presents The Design And Implementation Of A UART (Universal Asynchronous Receiver/Transmitter) Transmitter Using A Finite State Machine (FSM) In Verilog HDL. UART Is A Widely Used Serial Communication Protocol That Enables Data Transfer Between Devices Without The Need For A Shared Clock Signal. The Proposed System Converts Parallel Input Data Into A Serial Data Stream By Following The Standard UART Frame Format, Which Includes A Start Bit, Data Bits, And A Stop Bit.The Design Utilizes An FSM To Control The Sequential Transmission Process Through Different States Such As IDLE, START, DATA, And STOP. A Shift Register And Bit Counter Are Used To Ensure Correct Data Sequencing And Timing. The Implementation Is Verified Using A Testbench And Simulated To Observe Correct Waveform Behavior.This Project Provides A Simple And Efficient Approach For Implementing UART Communication In Digital Systems And Can Be Extended To Include Features Such As Parity Checking, Baud Rate Generation, And Full-duplex Communication For Real-time Embedded Applications.


Keywords

UART Finite State Machine (FSM) Verilog HDL Serial Communication Parallel-to-Serial Conversion Digital Design Data Transmission.

Paper ID

IJSARTV12I5105259

Publication Date

May 4, 2026

Research Area

Electronics And Communication Engineering

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