This tutorial explains one of the real world application of Here we are going to explain how a 16×2 LCD is interfaced with AT89S The AT89S52 Mini Development Board includes on the board hardware support for 2×16 LCD display in 8bit mode configuration. A male berg. AT89S52 Mini Development Board – LCD Interfacing. The AT89S52 Mini Development Board includes on the board hardware support for 2×16 LCD display in.

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Pin 3 V0 is connected to voltage Vcc through a variable resistor of 10k to adjust the contrast of LCD.

Interfacing of LCD with AT89S52(8051)

Enable, a high to low pulse need to enable the LCD. Connect the ISP programmer to the Development board. The steps that has to be done for initializing the LCD display is given below and these steps are common for almost all applications. There is nothing appearing on lcd. A pulse of ns should be given. Data register is for placing the data to be displayedand the command register is to place the commands.

RS is the register select pin. Resistor R1 limits the current through the back light LED and so do the back light intensity. Could you explain me how DELY subroutine produces the delay? And we will set it to 0 if we are sending some command instruction like clear the screen hex code The connection details are: So first let’s understand the 16 pins of LCD module. Although it may be time taking because you need to understand and connect 16 pins of LCD to the microcontroller. The popular 16 x 2 LCD can be interfaced with 89S52 in 4 bit or 8 bit mode.


E pin is for enabling the module. Capacitor C3, resistor R3 and push button switch S1 forms the reset circuitry.

LCD Interfacing with Microcontroller (89S52): Tutorial with Circuit Diagram and Code

See the circuit diagram for better understanding. And set it to 1, if we are reading from LCD module. Your email address will not be published.

Some important command instructions are given below:. Pulse E from high to low. Can I use blue character display instead of green. Repeat above steps for sending another data. Now the HEX file is successfully created inside your project folder.

The steps for sending data to the LCD module is given below. As shown in the circuit diagram, port 0 of the controller is used for interfacing it with LCD module.

Now the Header file is included in to the project folder. Here we only need to write to the Wtih module.

The programming part is done in assembly language interfacinb of embedded C. Can u tell me how to store multiple strings into LCD? Sorry for the question. Middle leg of the variable resistor is connected to PIN 3 and other two legs are connected to voltage supply and Ground.


Thanks for dropping by alselectro! Each command will make the module to do a particular task. Thanku for ur explanation and code.

Interfacing of LCD with AT89S52() | STRAIG

Contrast Setting, connected to Vcc thorough a variable resistor. Thankyou for taking the efforts! Getting Started with Microcontroller. Comment if you come across any doubts.

AT89S52 Mini Development Board – LCD Interfacing

A header file defining all Functions related to LCD control is created and available for Download here. High level at this qt89s52 enables read mode and low level at this pin enables write mode.

POT R2 is used for adjusting the contrast of the display. DB0 to DB7 are the data pins.