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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Interfacing of LCD with AT89S52(8051)

The above video shows lcd interface on bread board Can this project be shown on general purpose board??? The connection details are: See the circuit diagram for better understanding.

Pin 3 V0 is connected to voltage Vcc through a variable resistor of 10k to adjust the contrast of LCD. This site uses cookies. Place data byte on the data register. Leave a Reply Cancel reply Your email address will not be published. Now the Header file is included in to the project folder. You may also like: A header file defining all Functions related to LCD control is created and available for Download here.


VEE pin is meant for adjusting the contrast of the LCD display and the contrast can be adjusted by varying the voltage at this pin. To find out more, including how to control cookies, see here: Send 01H for clearing the display and return the cursor.


Here we only need to write to the LCD ld.

A pulse of ns should be given. DB0 to DB7 are the data pins. Program for interfacing LCD to microcontroller is shown below. There is nothing appearing on lcd. Click on AUTO to perform the programming. RS is the register select pin. E pin is for enabling the module.

Get Our Weekly Newsletter! Comment if you come across any doubts. Thanks for dropping by alselectro! To save port pins of microcontrolleroften the LCD is used in 4 bit mode. Ceramic capacitors C1,C2 and crystal X1 is related to the clock circuitry which produces the system clock frequency. I have used these Pins in above circuit.

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

Repeat above steps for sending another data. If the 7th bit of the accumulator is 1,then it jumps to DELY. A high to low transition at this pin will enable the module. POT R2 is used for adjusting the contrast of the display. Capacitor C3, resistor R3 and push interfaacing switch S1 forms the reset circuitry.

AT89S52 Mini Development Board – LCD Interfacing

Previous post Next post. Now the HEX file is successfully created inside your project folder. This will save us 4 pins of our controller which we might employ it for other purpose. The steps that has to be done for initializing the LCD display is given below and these steps are common for almost all applications.


If we make RS pin low and put a data on the data line, the module will recognize it as a command.

Thankyou for taking the efforts! However 4 bit mode uses only 4 data lines along with the control pins. This will saves the number wkth GPIO pins needed for other purpose.

Agree with you harish kumar If you got the solution kindly share with us. Interfacng u tell me how to store multiple strings into LCD?

High level at this pin enables read mode and low level at this pin enables write mode. Connect interfqcing ISP programmer to the Development board. Else it executes the next instruction.

Contrast Setting, connected to Vcc thorough a variable resistor. Sending data to the LCD. Now click F7 or the Build button to start building target. Data register is for placing the data to be displayedand the command register is to place the commands.