View source for Interfacing Character LCDs with AVR ← Interfacing Character LCDs with AVR

[[Category:AVR Tutorials]]
=Basics=
We have covered the basics of  character LCDs in the [[LCD_16_x_2_Interfacing_with_8051|8051 Tutorial]]. In this tutorial let's go straight ahead and interface various character display like 16x1, 16x2, 20x4 with AVR atmega32. 

Note that most of these displays use a standard display controller like HD44780U, hence a generic code can be written to interface different types mentioned above. Also, these can be interfaced in 4-bit, 8-bit modes. 
=Hookup=
We will connect the display in 4 bit mode as shown in the diagram below. You may change it to 8 bit and make the required connections and corresponding code changes.   Also note that the Hardware connections remain same for LCD 16x1, LCD 16x 2 and LCD 20x4 configurations. So let's start with 16x1 LCD. 

=LCD 16 x 1=

=LCD 16 x 2=

=LCD 20 x 4=
The AVR LCD library

{{#ev:youtube|Z-SD1SaonLE|680}}


[http://exploreembedded.com/wiki/images/8/88/Schematic_AVR_Interfacing_LCD_16X2_4bit.pdf '''Schematic:4bit mode''']


[[File:Schematic AVR Interfacing LCD 16X2 4bit.JPG|680px|center]]


[http://exploreembedded.com/wiki/images/e/ea/Schematic_AVR_Interfacing_LCD_16X2_8bit.pdf '''Schemati:8bit mode''']


[[File:Schematic AVR Interfacing LCD 16X2 8bit.JPG|680px|center]]


'''Code and Explanation will be ubdated soon..'''