Using LCD

300 132 erit

LCD (Liquid Crystal Display) screen is an electronic display module and find a wide range of applications. These modules are preferred over seven segments and other multi segment LEDs. When you start working with LCD modules you will start feeling the real power of MCU and your imaginations will be touching sky. The alphanumeric LCD that we are going to interface is a 20X4 alphanumeric LCD. It means the LCD can display 20 characters in each row and it has 4 rows. It is a HD44780 controller based LCD. There are two methods to interface any alphanumeric LCD with AVR microcontroller: 8-bit and 4-bit interfacing method.


In this tutorial, we will learn How to interface a 20X4 alphanumeric LCD with AVR ATmega16/32 microcontroller using 4-bit interfacing method.


Basic Hardware Required


AVRISP Programmer

5V, 1A DC Power Supply

20X4 Alphanumeric LCD


Basic Software Required

AVR Studio 6 or 7

ProgSig Hex Downloader

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