🖥️ 16x2-LCD-Interface-using-PIC16F877A

🧭 Project Overview

This project demonstrates interfacing a 16x2 alphanumeric LCD with a PIC16F877A microcontroller using 8-bit parallel communication. The LCD displays the text: Line 1: EMBEDDED Line 2: SYSTEMS

This project helps you understand how to send commands and data to the LCD using control signals (RS, RW, EN).

⚙️ Hardware & Software Requirements

Hardware:

PIC16F877A Microcontroller

16x2 LCD (HD44780-compatible)

10kΩ Potentiometer (for contrast control)

Breadboard / Proteus simulation

Software:

MPLAB X IDE

XC8 Compiler

Proteus 8 Professional

🧩 Proteus Circuit Setup

Controller: PIC16F877A

Oscillator: 20 MHz Crystal (pins 13 & 14)

LCD (16x2):

RS → RD0

RW → RD1

EN → RD2

D0–D7 → RC0–RC7

VSS → GND

VDD → +5V

VEE → middle pin of potentiometer (contrast)

Potentiometer ends → +5V & GND

▶️ Simulation Steps

Open Proteus_Design.pdsprj in Proteus 8.

Load the .hex file compiled from MPLAB X.

Run the simulation — “EMBEDDED” appears on line 1 and “SYSTEMS” on line 2.

📸 Output

LCD Display:

EMBEDDED SYSTEMS

🚀 Future Expansion Ideas

Display scrolling messages.

Interface sensors (like temperature) and show live data.

Implement 4-bit LCD communication mode to save pins.