hd44780 lcd display datasheet supplier

ERM1202SYG-1 is 12 characters wide,2 rows character lcd module,SPLC780C controller (Industry-standard HD44780 compatible controller),6800 4/8-bit parallel interface,single led backlight with yellow green color included can be dimmed easily with a resistor or PWM,stn-lcd positive,dark blue text on the yellow green color,wide operating temperature range,rohs compliant,built in character set supports English/Japanese text, see the SPLC780C datasheet for the full character set.Optional 3.3v or 5v power supply and optional pin header connection.

Of course, we wouldn"t just leave you with a datasheet and a "good luck!".For 8051 microcontroller user,we prepared the detailed tutorial such as interfacing, demo code and Development Kit at the bottom of this page.

ERM1601SYG-2 is 16 characters wide,1 row character lcd module,SPLC780C controller (Industry-standard HD44780 compatible controller),6800 4/8-bit parallel interface,single led backlight with yellow green color included can be dimmed easily with a resistor or PWM,stn-lcd positive,dark blue text on the yellow green color,wide operating temperature range,rohs compliant,built in character set supports English/Japanese text, see the SPLC780C datasheet for the full character set. It"s optional for pin header connection,5V or 3.3V power supply and I2C adapter board for arduino.

Of course, we wouldn"t just leave you with a datasheet and a "good luck!".For 8051 microcontroller user,we prepared the detailed tutorial such as interfacing, demo code and Development Kit at the bottom of this page.

M3A23TAA : 8 pin DIP, 5.0 or 3.3 Volt, Acmos/ttl, Clock Oscillators. MtronPTI reserves the right to make changes to the product(s) and service(s) described herein without notice. No liability is assumed as a result of their use or application. Please see www.mtronpti.com for our complete offering and detailed datasheets. Contact us for your application specific requirements: MtronPTI 1-800-762-8800. .

The HD66727, dot-matrix liquid crystal display controller and driver LSI incorporating a key scan function, displays alphanumerics, katakana, hiragana, and symbols. It can be configured to drive a dotmatrix liquid crystal display and control key scan functions under the control of an I2C bus or a clocksynchronized serial microprocessor. A single HD66727 is capable of displaying up to four 12-character lines, 40 segments, and 12 annunciators, and controlling up to a 4-by-8 key matrix, and driving three LED. The HD66727 incorporates all the functions required for driving a dot-matrix liquid crystal display such as display RAM, character generator, and liquid crystal drivers, and it also incorporates a booster for the LCD power supply and key scan functions.

- Clear display, display on/off control, icon and mark control, character blink, white-black inverting blinking cursor, icon and mark blink, return home, cursor on/off, white-black inverting raster-row

Abstract: hitachi hd44780 lcd HD44780 lcd display hd44780 lcd HITACHI HD44780 DOT MATRIX LCD MODULE 14 pin lcd 00001111B hd44780 lcd controller hd44780 lcd controller pin out hitachi hd44780 display

Text: Interfacing an SX Microcontroller to a Hitachi LCD Display Application Note: Simple , ) Interfacing an SX Microcontroller to a Hitachi LCD Display LCD Display Initializing the LCD On power-up, the LCD needs several milliseconds , LCD Display Writing Commands and Data The lcd_write_command and lcd_write_data subroutines use , ;- Interfacing an SX Microcontroller to a Hitachi LCD Display Waiting for the Busy Flag

Abstract: KP-03 LCD hitachi hd44780 16 pin hd44780 display HITACHI HD44780 DOT MATRIX LCD MODULE Hitachi HD44780 LCD LCD MODULE kp kp-03 HD44780 LCD display lcd 2 x 16 HD44780

Text: HITACHI LCD MODULE 16 CHARACTER, 2 LINE DISPLAY Marked KP-01 or KP-03 on top , HC COMPATIBLE Hitachi LCD Display , Page 1 of 4, 17 Nov 1998, Bob Lineberry 68HC11, A13 VSS G A15 G1* G2* Hitachi LCD Display , Page 2 of 4, 17 Nov 1998, Bob , line. Hitachi LCD Display , Page 3 of 4, 17 Nov 1998, Bob Lineberry INSTRUCTION SET , cursor address position. Hitachi LCD Display , Page 4 of 4, 17 Nov 1998, Bob Lineberry -

Text: 3658 Serializing an LCD Display Abstract: Besides reducing the number of required GPIO , Maxim > App Notes > DISPLAY DRIVERS Keywords: LCD driver, op amp, I/O port expander, contrast , LCD character displays connect to the outside world through a controller IC, such as the LCD display . To do , also provides digital control of the LCD "s contrast and backlight intensity. A versatile I/O-port

Text: 3658 Serializing an LCD Display Abstract: Besides reducing the number of required GPIO , Maxim > App Notes > Display Drivers Keywords: LCD driver, op amp, I/O port expander, contrast , LCD character displays connect to the outside world through a controller IC, such as the LCD display . To do that, use the following equations to calculate resistor values R1, R5, and R6 , also provides digital control of the LCD "s contrast and backlight intensity. A versatile I/O-port

Text: from One Port Features and Overview · Uses the industry standard Hitachi LCD display driver , the industry standard Hitachi LCD display driver chip, but will work , interface to an industry standard Hitachi HD44780A LCD controller. This type of display has a simple , to interface to the LCD display module. Bargraph Selects whether the bargraph functions are , function to display string at current ; LCD cursor position. Parameters: sRamString: A pointer to a

Text: industry-standard Hitachi LCD display driver chip protocol Requires only seven I/O pins on one I/O , you can create and display your own custom characters. When to Use a Character LCD Use the Character LCD component to display text data to the user of the product or to a developer during design and , on the LCD module"s display Turns off the LCD module"s display Prints a null-terminated string to the , : Return Value: Side Effects: Turns off the display of the LCD screen. None None None void

Abstract: lcd 2X16 hitachi 2X16 lcd module hd44780 lcd custom HITACHI LCD MODULE lcd display 2x16 software command lcd 2x16 command software 2x16 lcd pin diagram 2X16 hitachi Hitachi HD44780 LCD

Text: industry-standard Hitachi LCD display driver chip protocol Requires only seven I/O pins on one I/O , you can create and display your own custom characters. When to Use a Character LCD Use the Character LCD component to display text data to the user of the product or to a developer during design and , off the LCD Turns on the LCD module"s display Turns off the LCD module"s display Prints a , LCD_Char_DISPLAY_2_LINES_5x10 Return Value: Side Effects: None None Clear display Return cursor and LCD to home

Abstract: lcd custom 2X16 lcd PIN OUT lcd 2x16 HD44780 LCD ASCII CODE c source code 2X16 lcd 4 bit interface character LCD PSoc hitachi 44780 HITACHI LCD MODULE

Text: industry-standard Hitachi LCD display driver chip protocol Requires only seven I/O pins on one I/O , you can create and display your own custom characters. When to Use a Character LCD Use the Character LCD component to display text data to the user of the product or to a developer during design and , the LCD module"s display Turns off the LCD module"s display Prints a null-terminated string to the , ) Description: Parameters: Return Value: Side Effects: Turns off the display of the LCD screen. None None None

Abstract: lcd custom character LCD PSoc HD44780 lcd display hitachi hd44780 lcd 2x16 HD44780 14 pin lcd display 2x16 16 pin diagram of lcd display 2x16 device code 150a HD*4780

Text: industry-standard Hitachi LCD display driver chip protocol Requires only seven I/O pins on one I/O , you can create and display your own custom characters. When to Use a Character LCD Use the Character LCD component to display text data to the user of the product or to a developer during design and , off the LCD Turns on the LCD module"s display Turns off the LCD module"s display Prints a , LCD_Char_DISPLAY_2_LINES_5x10 Return Value: Side Effects: None None Clear display Return cursor and LCD to home

Abstract: IOW56 graphic lcd initialisation KS0108 connector 64X128 graphics lcd 640X256 AX1520 LCD GRAPHIC MODULE 256*64 LH155BA5 LCD 2x8, 10 pin Module

Text: display modules. Since the LCD modules dominate the market of display modules we will talk about LCD , fluorescense displays (VFDs) as well. 1.1 Display Module Variants LCD modules can be sorted into a number of , IO-Warrior, September 21st 2006 1 AN5: Driving Display Modules with IO-Warrior Alphanumeric: display memory in display up to 128 characters in two lines and it can overlay this with

Text: Interfacing the H8/3334Y and the LCD driver 23/10/96 Description In the following code example a H8/3334Y 8-bit microcontroller drives the LCD controller and a character , also see application note APPS/026/1.0 for a description of the interface to display , . Interfacing the H8/3334Y and the LCD driver Hardware Implementation Two I/O ports of the H8/3334Y, which Pins P8,0 to P8,2 are used to control the function of LCD character

Text: Interfacing the H8/3334Y and the LCD driver In the following code example a H8/3334Y 8-bit microcontroller drives the LCD controller and a character display via general I/O ports. The code example , . All other LCD modules based on LCD Driver and Display LM086ALN 8 , description of the interface to display driver. This application note can be used for H8 , , of which Pins P8,0 to P8,2 are used to control the function of LCD

Text: particular LCD (or compatible) display here: LCD -107.pdf Pros and Cons for this LCD , Directly Supported by the Serial Wombat: WD-C2401P 24 x 1 LCD Panel 2x24 Display w/ EL , Display Information 1/14/08 3:23 PM Serial Wombat a general-purpose digital interface device for hobbyists, engineers and students Serial Wombat Home WD-C2401P LCD LCD Purchase A Wombat LCD panel With EL backlight This is a used, 24 character by two line

Text: ) Description The LCD-n ( HD44780A) dot matrix liquid crystal display controller & driver LSI displays , condition for the LCD output level is specified in LCD v o lta g e V lcd ". HD44780A(LCD-H) Display data RAM (DD RAM) The display data RAM (DD RAM , Brisbane, CA 94005-1819 · (415) 589-8300 131 HD44780A(LCD-II) 2. 16-character display using , internal shift re g ister, the display . The rest displays, corresponding to latter

Abstract: 16 pin diagram of HD44780 lcd display 16x2 16x2 lcd method LCD display module 16x2 characters HD44780 16 pin diagram of lcd display 16x2 LCD ASCII CODE 16x2 16x2 lcd HD44780 HITACHI HD44780 DOT MATRIX LCD MODULE hitachi 16x2 lcd LCD display module 16x2 HD44780

Text: · This Application Note provides Character Liquid Crystal Display ( LCD ) driver routines (coded , character LCD display . This 16 x 2 character LCD uses the industry-standard 4-bit data transfer mode. With , initialize the LCD controller, (specific to the type of display ). · Turn the display ON and OFF. · , . · Write a user-defined pixel map in LCD CGRAM from the table. · Display user-defined , following main units: · · Discussion Liquid Crystal Display ( LCD ) is a useful medium of communication

Abstract: 16x2 lcd HD44780 hitachi 16x2 lcd LCD ASCII CODE 16x2 LCD ASCII table CODE 16x2 HD44780 16x2 16x2 lcd HD44780 16x1 LCD command lcd display 16x2 LCD display module 16x2 HD44780

Text: character LCD display that is fitted with a Hitachi LCD uses the , a Typical HD44780-Based Character LCD Module Liquid Crystal Display ( LCD ) is a very useful , controller to control various features of its display . An LCD with a controller is referred to as an LCD , eZ80Acclaim! MCU is a 16x2 character LCD controlled by the LCD Module, with its on-board

Abstract: 16 pin hd44780 display hd44780 LCD 4 20 LCD 16 BY 2 HD44780 hd44780 LCD lcd screen interfacing hd44780 lcd controller HD44780 application LCD HD44780 LCD ASCII CODE

Text: /329-4700 · Fax: 781/326-8703 · www.analog.com T Interfacing an LCD to a , accepts data from the MicroConverter and communicates with the LCD screen. LCD screens , . INTERFACING AN LCD The data bus that connects the LCD to a MicroConverter In assembly code, this interface is , .7 P2.6 P3.6 P0 040H ;Char buffer for LCD CONFIGURING THE LCD SCREEN To display text to the LCD

Abstract: KS0066U HD44780 ADDRESS DDRAM LCD 20X4 HITACHI HITACHI Character LCD Modules 20X4 TABLE DDRAM LCD 20X4 HITACHI Samsung KS0066u HD44780 16x1 LCD 16X4 LCD command hd44780 lcd controller pin out 20x2 display

Text: Step By Step Initialization Flow Chart for LCD Modules. (These , Initialization Flow Chart for LCD Modules. (These instructions are intended to help , Initialization Flow Chart for LCD Modules. (These instructions are intended to help , Step By Step Initialization Flow Chart for LCD Modules. (These instructions , Flow Chart for LCD Modules. (These instructions are intended to help get up

Text: ^ H IT A C H I" UQUIDCRYSIAL DISPLAY MODULES AND DEVCES The Clear Advantage In LCD Technology 4 , : LCD Modules-These consist of the liquid crystal display plus built-in driver circuitry. Some also , 12 Segment LCD M o d u le s page 12 LCD Devices-These consist of the liquid crystal display itself , it many advances over previous display technologies. Even today, the TN LCD continues to enjoy , . T h in Film Transistor (T F T ) The TFT LCD is Hitachi" s premier fla: panel display technology. TFT

Abstract: AND491GST hd44780 AND721GST-LED AND721GST lcd 2 x 16 HD44780 FE0501W Hitachi 2 x 16 character display with backlight AND491GST-LED AND591GST

Text: a-Si Technology Small TFT Color Monitors Large and Medium TFT Color Modules Intelligent LCD Graphic Displays Intelligent LCD Alphanumeric Displays Panel/Segment Displays Film Super Twist Nematic Super , colors 8bit=16.2M colors Note 3: Wide Viewing angle display Purdy Electronics Corporation · 720 , Backlight AND081GST 1x8 4.45 x 8.35 48.0 x 13.0 60 x 36 x 10 5 AND081GST-LED 1x8 4.45 x 8.35 48.0 x 13.0 60 x 36 x 13 5 AND082GST 2x8

Abstract: MOBILE LCD DISPLAY hd44780 LCD 4 20 hd44780 lcd HD44780 hd44780 lcd controller display controller hd44780 LCD hd44780 lcd controller Verilog HD44780 lcd display

Text: Interface Key signals · 32 bit APB bus · LCD Display Controller Interface ­ support of LCD Interface Ports · 32 bit APB bus interface · LCD Display Controllers , Product Technical Brief Date: 05/2001 picoPACKTM LCD Display Controller Interface Introduction Architecture The LCD Display Controller Interface is a synthesiz- for display control , typical LCD display controllers. In addition, the module APB Control Lcd Interrupt Interrupt

Abstract: 2X16 lcd module hd44780 LCD 4x20 HITACHI lcd 2x16 HD44780 2X16 lcd module hd44780 controller pin diagram of lcd display 2x16 lcd 2x16 HD44780 14 pin 4X40 LCD HD44780 HD*4780 16 pin diagram of lcd display 2x16

Text: . 21 Interfacing MB963xx to LCD Module Display ( LCD ) by a microcontroller. Further, the connection to LCD glass and also to , -bit built-in display data memory, and controls the LCD display by means of four common outputs and 72 segment , Controlling of Liquid Crystals contents of display data memory on the LCD panel by means of segment output , Controller The below connection diagram shows interfacing of MB9638x to DE133 series LCD (of Display

Text: Driver) DESCRIPTION The LCD - II ( HD44780A) is a dot matrix liquid crystal display , matrix liquid crystal display systems with less number of chips by using the LCD-II ( HD44780A). , D44780A(LCD-II) · Both display data and character generator RAMs can be read from the MPU. · , Brisbane, CA 94005-1819 · (415) 589-8300 D44780A(LCD-II) (Left Shift Display ) (Right Shift , 06 16-character display using an HD44100H is as shown below: (digit) 1 2

Text: SEftES HOW TO USE HITACHI"S BUILT-IN CONTROLLER DRIVER LCD-H( DISPLAY , built-in controller LSI. Controller LSI LCD driver , S »rl6 R/W-RSl- 1 i 7" oíkD "ook-C.U I I LCD 7> 40 Ol LCD , Interface of liquid crystal display module, there are three power supply terminals, Vqq, GND, and V0. LCD , display drive to V0 terminal. Since suitable" voltage of power supply for LCD shifts according to

Text: rran g em en t D escription The LCD-H ( HD44780A) d o t m atrix liquid crystal display , €¢ Brisbane, CA 94005-1819 • (415) 589-8300 4780A(LCD-H) Display d a ta RAM (DD RAM , display begins a t th e h e a d position. For exam ple, 8 ch aracters using 1 4780A(LCD-H) 2. 16-character display u sing a n , Display 4. Display Position ♦ DD RAM Address HD44100H Display W hen th e display

The Hitachi HD44780 LCD controller is an alphanumeric dot matrix liquid crystal display (LCD) controller developed by Hitachi in the 1980s. The character set of the controller includes ASCII characters, Japanese Kana characters, and some symbols in two 40 character lines. Using an extension driver, the device can display up to 80 characters.

The Hitachi HD44780 LCD controller is limited to monochrome text displays and is often used in copiers, fax machines, laser printers, industrial test equipment, and networking equipment, such as routers and storage devices.

Compatible LCD screens are manufactured in several standard configurations. Common sizes are one row of eight characters (8×1), and 16×2, 20×2 and 20×4 formats. Larger custom sizes are made with 32, 40 and 80 characters and with 1, 2, 4 or 8 lines. The most commonly manufactured larger configuration is 40×4 characters, which requires two individually addressable HD44780 controllers with expansion chips as a single HD44780 chip can only address up to 80 characters.

Character LCDs may have a backlight, which may be LED, fluorescent, or electroluminescent. The nominal operating voltage for LED backlights is 5V at full brightness, with dimming at lower voltages dependent on the details such as LED color. Non-LED backlights often require higher voltages.

Character LCDs use a 16-contact interface, commonly using pins or card edge connections on 0.1 inch (2.54 mm) centers. Those without backlights may have only 14 pins, omitting the two pins powering the light. This interface was designed to be easily hooked up to the Intel MCS-51 XRAM interface, using only two address pins, which allowed displaying text on LCD using simple MOVX commands, offering cost effective option for adding text display to devices.

Vee (also V0): This is an analog input, typically connected to a potentiometer. The user must be able to control this voltage independent of all other adjustments, in order to optimise visibility of the display that varies i. a. with temperature and, in some cases, height above the sea level. With a wrong adjustment, the display will seem to malfunction.

R/W: In most applications, reading from the HD44780 is not necessary. In that case, this pin can be permanently connected to ground and no processor pins need to be allocated to control it.

Selecting 4-bit or 8-bit mode requires careful selection of commands. There are two primary considerations. First, with D3–D0 unconnected, these lines will always appear high (binary 1111) to the HD44780 since there are internal pull-up MOSFETs.

The execution times listed in this table are based on an oscillator frequency of 270 kHz. The data sheet indicates that for a resistor of 91 kΩ at VCC=5 V the oscillator can vary between 190 kHz and 350 kHz resulting in wait times of 52.6 µs and 28.6 µs instead of 37 µs. If a display with the recommended 91 kΩ resistor is powered from 3.3 volts the oscillator will run much slower. If the busy bit is not used and instructions are timed by the external circuitry, this should be taken into account.

The original HD44780 character generator ROM contains 208 characters in a 5×8 dot matrix, and 32 characters in a 5×10 dot matrix. More recent compatible chips are available with higher resolution, matched to displays with more pixels.

uProject is an advanced testing software for Matrix Orbital displays. It allows testing of nearly all the features and allows test scripting and many other advanced features.

uProject (micro Project) is a series of different tools that should allow the testing of nearly all the features of most of our displays. uProject also features

Do you want your Arduino projects to display status messages or sensor readings? Then these LCD displays can be a perfect fit. They are extremely common and fast way to add a readable interface to your project.

This tutorial will help you get up and running with not only 16×2 Character LCD, but any Character LCD (16×4, 16×1, 20×4 etc.) that is based on Hitachi’s LCD Controller Chip – HD44780.

When current is applied to these crystals, they become opaque, blocking the backlight that resides behind the screen. As a result that particular area will be dark compared to the others. And this is how the characters are displayed on the screen.

True to their name, these LCDs are ideal for displaying only text/characters. A 16×2 character LCD, for example, has an LED backlight and can display 32 ASCII characters in two rows of 16 characters each.

If you look closely you can see tiny rectangles for each character on the display and the pixels that make up a character. Each of these rectangles is a grid of 5×8 pixels.

The good news is that all of these displays are ‘swappable’, which means if you build your project with one you can just unplug it and use another size/color LCD of your choice. Your code will have to change a bit but at least the wiring remains the same!

Vo (LCD Contrast) controls the contrast and brightness of the LCD. Using a simple voltage divider with a potentiometer, we can make fine adjustments to the contrast.

RS (Register Select) pin is set to LOW when sending commands to the LCD (such as setting the cursor to a specific location, clearing the display, etc.) and HIGH when sending data to the LCD. Basically this pin is used to separate the command from the data.

R/W (Read/Write) pin allows you to read data from the LCD or write data to the LCD. Since we are only using this LCD as an output device, we are going to set this pin LOW. This forces it into WRITE mode.

E (Enable) pin is used to enable the display. When this pin is set to LOW, the LCD does not care what is happening on the R/W, RS, and data bus lines. When this pin is set to HIGH, the LCD processes the incoming data.

D0-D7 (Data Bus) pins carry the 8 bit data we send to the display. For example, if we want to see an uppercase ‘A’ character on the display, we set these pins to 0100 0001 (as per the ASCII table).

Now we will power the LCD. The LCD has two separate power connections; One for the LCD (pin 1 and pin 2) and the other for the LCD backlight (pin 15 and pin 16). Connect pins 1 and 16 of the LCD to GND and 2 and 15 to 5V.

Most LCDs have a built-in series resistor for the LED backlight. You’ll find this near pin 15 on the back of the LCD. If your LCD does not include such a resistor or you are not sure if your LCD has one, you will need to add one between 5V and pin 15. It is safe to use a 220 ohm resistor, although a value this high may make the backlight a bit dim. For better results you can check the datasheet for maximum backlight current and select a suitable resistor value.

Next we will make the connection for pin 3 on the LCD which controls the contrast and brightness of the display. To adjust the contrast we will connect a 10K potentiometer between 5V and GND and connect the potentiometer’s center pin (wiper) to pin 3 on the LCD.

That’s it. Now turn on the Arduino. You will see the backlight lit up. Now as you turn the knob on the potentiometer, you will start to see the first row of rectangles. If that happens, Congratulations! Your LCD is working fine.

Let’s finish connecting the LCD to the Arduino. We have already made the connections to power the LCD, now all we have to do is make the necessary connections for communication.

We know that there are 8 data pins that carry data to the display. However, HD44780 based LCDs are designed in such a way that we can communicate with the LCD using only 4 data pins (4-bit mode) instead of 8 (8-bit mode). This saves us 4 pins!

The sketch begins by including the LiquidCrystal library. The Arduino community has a library called LiquidCrystal which makes programming of LCD modules less difficult. You can find more information about the library on Arduino’s official website.

First we create a LiquidCrystal object. This object uses 6 parameters and specifies which Arduino pins are connected to the LCD’s RS, EN, and four data pins.

In the ‘setup’ we call two functions. The first function is begin(). It is used to specify the dimensions (number of columns and rows) of the display. If you are using a 16×2 character LCD, pass the 16 and 2; If you’re using a 20×4 LCD, pass 20 and 4. You got the point!

After that we set the cursor position to the second row by calling the function setCursor(). The cursor position specifies the location where you want the new text to be displayed on the LCD. The upper left corner is assumed to be col=0, row=0.

There are some useful functions you can use with LiquidCrystal objects. Some of them are listed below:lcd.home() function is used to position the cursor in the upper-left of the LCD without clearing the display.

lcd.scrollDisplayRight() function scrolls the contents of the display one space to the right. If you want the text to scroll continuously, you have to use this function inside a for loop.

lcd.scrollDisplayLeft() function scrolls the contents of the display one space to the left. Similar to above function, use this inside a for loop for continuous scrolling.

If you find the characters on the display dull and boring, you can create your own custom characters (glyphs) and symbols for your LCD. They are extremely useful when you want to display a character that is not part of the standard ASCII character set.

CGROM is used to store all permanent fonts that are displayed using their ASCII codes. For example, if we send 0x41 to the LCD, the letter ‘A’ will be printed on the display.

CGRAM is another memory used to store user defined characters. This RAM is limited to 64 bytes. For a 5×8 pixel based LCD, only 8 user-defined characters can be stored in CGRAM. And for 5×10 pixel based LCD only 4 user-defined characters can be stored.

16×2 LCD is named so because; it has 16 Columns and 2 Rows. There are a lot of combinations available like, 8×1, 8×2, 10×2, 16×1, etc. But the most used one is the 16*2 LCD, hence we are using it here.

All the above mentioned LCD display will have 16 Pins and the programming approach is also the same and hence the choice is left to you. Below is the Pinout and Pin Description of 16x2 LCD Module:

These black circles consist of an interface IC and its associated components to help us use this LCD with the MCU. Because our LCD is a 16*2 Dot matrix LCD and so it will have (16*2=32) 32 characters in total and each character will be made of 5*8 Pixel Dots.  A Single character with all its Pixels enabled is shown in the below picture.

So Now, we know that each character has (5*8=40) 40 Pixels and for 32 Characters we will have (32*40) 1280 Pixels. Further, the LCD should also be instructed about the Position of the Pixels.

It will be a hectic task to handle everything with the help of MCU, hence an Interface IC like HD44780 is used, which is mounted on LCD Module itself. The function of this IC is to get the Commands and Data from the MCU and process them to display meaningful information onto our LCD Screen.

The LCD can work in two different modes, namely the 4-bit mode and the 8-bit mode. In 4 bit mode we send the data nibble by nibble, first upper nibble and then lower nibble. For those of you who don’t know what a nibble is: a nibble is a group of four bits, so the lower four bits (D0-D3) of a byte form the lower nibble while the upper four bits (D4-D7) of a byte form the higher nibble. This enables us to send 8 bit data.

As said, the LCD itself consists of an Interface IC. The MCU can either read or write to this interface IC. Most of the times we will be just writing to the IC, since reading will make it more complex and such scenarios are very rare. Information like position of cursor, status completion interrupts etc. can be read if required, but it is out of the scope of this tutorial.

The Interface IC present in most of the LCD is HD44780U,in order to program our LCD we should learn the complete datasheet of the IC. The datasheet is given here.

There are some preset commands instructions in LCD, which we need to send to LCD through some microcontroller. Some important command instructions are given below: