Our header file lcd.h makes interfacing 16×2 character LCD with using Keil C simpler and user friendly. Just include the header file and enjoy. LCD Interfacing with 89C51 – microcontroller – Circuit & C program. Learn how to interface 16 x 2 LCD and microcontroller using C code and circuit. This is a circuit diagram of Interfacing 16X2 LCD with AT89C51 which is a microcontroller family. We use LCD displays for displaying the error messages, etc.

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Sending data to the LCD.

In 16z2 LCD each character is displayed in 5×7 pixel matrix. Commonly used LCD Command codes: The module were are talking about here is type number JHDA which is a very popular one. If we make RS pin low and put a data on the data line, the module will recognize it as a command.

Repeat above steps for sending another data. Arduino based GPS receiver. Ceramic capacitors C1,C2 and crystal X1 is lcdd to the clock circuitry which produces the system clock frequency.

This Code is only visible to Registered users. This LCD has two registers. El retardo now demasiado corto. See the circuit diagram for better understanding. A high to low pulse is given at EN pin when data is sent. E pin is for enabling the module. Pin 3 is connected to a preset of 10k? The necessary commands for the LCD initialization are defined at the end part of the program.


This will saves the number of GPIO pins needed for other purpose.

LCD interfacing with Microcontroller (AT89C51) – Circuit & C Program

Program for interfacing LCD to microcontroller miccrocontroller shown below. I think that you have use array in c programming.

Capacitor C3, resistor R3 and push button switch S1 forms the reset circuitry. VEE intefrace is meant for adjusting the contrast of the LCD display and the contrast can be adjusted by varying the voltage at this pin.

Else it executes the next instruction. Data Register – stores the data to be displayed on the LCD.

The steps that has to be done for initializing intedface LCD display is given below and these steps are common for almost all applications. Pulse E from high to low. A command is an instruction given to LCD to do a predefined task like initializing, clearing the screen, setting the cursor position, controlling display etc. Leave a Reply Cancel reply Your email address will not be published. Skip to main content. Here P 1 is used as output port which is connected to data pins of the LCD.

Data register is for placing the data to be displayedand the command register is to place the commands. Please check — http: Each command will make the module to do a particular fo. Here we only need to write to the LCD module. A 16x 2 LCD means it can display 16 characters per line and there are 2 such lines. The JHDA has two built in registers namely data register and command register. Anybody can send me the programing for lcd interfacing with microcontroller and xbee s2.


SPI Module of Arduino. You may also like: Contrast adjustment by providing a variable resistor through V CC. The steps for sending data to the LCD module is given below.


LCD can be easily interfaced with a microcontroller to display a message or status of a device. Interfafe microcontroller has 40 pin s with four 8-bit ports P 0P 1P 2and P 3. The programming part integface done in assembly language instead of embedded C.

Comment if you come across any doubts. The reset circuit, oscillator circuit and power supply need to be provided for the proper working of the circuit.

Each write operation is performed on the positive edge of the Enable signal. LCD Liquid Crystal Display screen is an electronic display module and find a wide range of applications.

How to interface 16×2 LCD with 8051 microcontroller (AT89C51)

DB0 to DB7 are the data pins. However 4 bit mode uses only 4 data lines along with the control pins. Interface SD Card with Arduino.

Force cursor to the beginning of the 2 nd line. Interface GPS with Arduino.