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.

Author: Tukazahn Shazilkree
Country: Zambia
Language: English (Spanish)
Genre: Career
Published (Last): 16 June 2016
Pages: 428
PDF File Size: 19.28 Mb
ePub File Size: 1.58 Mb
ISBN: 238-1-21622-382-8
Downloads: 70100
Price: Free* [*Free Regsitration Required]
Uploader: Faern

how to interface 16×2 LCD with microcontroller (AT89C51) – CONSBEDDED

E pin is for enabling the module. The module were are talking about here is type number JHDA which is a very popular one. Hi I constructed the circuit exactly as it is on my simulator and just copied the program and nothing is appearing on the LCD.

Here we only need to write to the LCD module. These modules ho replacing seven segments and other multi segment LEDs for these purposes. In this way the total number of pins can be reduced to 6.


Interface SD Card with Arduino. Power supply to control contrast. Also instruction command codes are sent to these pins. Sorry for the question. As mentioned earlier the 8 bit data is break into two 4 bit data and send to LCD.

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

Could you explain me how DELY subroutine produces the delay? What is Web Browser. This is achieved by displaying their status on a small display module. The necessary commands for the LCD initialization are defined at the end part of the program. Else interfaxe executes the next instruction.

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

Wigh write operation is performed on the positive edge of the Enable signal. However 4 bit mode uses only 4 data lines along with the control pins. If we make RS pin low and put a data on the data line, the module will recognize it as a command. A high to low pulse is given at EN pin when data is sent.

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. Virgin Galactic — Commercial Space Flight. Send 01H for clearing the display and return the cursor. This LCD has two registers. LCD can be easily interfaced with a microcontroller to display a message or status of a device.


There is nothing appearing on lcd. Here P 1 is used as output port which is connected to data pins of the LCD. Pin 3 is connected to a preset of 10k?

A 16×2 LCD display is very basic module and is very commonly used in various devices and circuits. Ro Module of Arduino. This Code is only visible to Registered users.

Thankyou for taking the efforts! Force the cursor to the beginning of the 1 st line. If the 7th bit of the accumulator is 1,then it jumps to DELY. Skip to main hwo. Each command will make the module to do a particular task. A preset is a three legged electronic component which can be made to offer varying resistance in a circuit.