16x2 lcd module pdf brands

The LCDduino board enables users to create many applications/projects that require a 16×2 LCD display and Arduino. The board has the exact size of 16×2 LCD and can be installed on the backside of the LCD. This is a low-cost solution that has onboard Arduino + LCD so no extra Arduino Nano or Arduino board is required. The Arduino compatible hardware includes onboard programming and boot-loader connectors, Atmega328 microcontroller, and 16×2 LCD interface. Each Arduino I/O Pin including the VCC and GND is exposed to the connectors for easy connection with sensors and other devices. The board enables the easy interface of many devices and sensors. The operating power supply is 7 to 15V DC.

I am using the exact components and have followed the exact pin configurations for the past 2 weeks, connecting then reconnecting, I have also tried different FTDI cables for uploading onto the Arduino pro mini. BUT have had no success, PLEASE help me as it is a basic issue I am sure but cannot find the solution, My 16*2 LCD lights up and also when I upload a program the arduino page reads that it has successfully uploaded (Done Uploading).

We"ve had customers order face plates through Ponoko for these LCDs and be pretty happy with it. Check around on the comments on other products and on the forum. You"ll probably find a lot of different examples of mounting solutions.

can this run in 8bit mode? I"m trying so hard to just wire up the 8 data lines and manually send the bits required for certain symbols. But it"s either stuck in 4bit mode, or I"m completely lost. My program is simple and I KNOW that it is sending the 1"s and 0"s down the appropriate lines but I can"t get a response at all. And I can succesfully apply the example code for liquid crystal. In class we just banged some bits into those old lcd"s and got the expected response... Is this one more advanced or something? Thanks, I really appreciate any help.

No matter what line I set the cursor at using lcd.setCursor(0,0), or lcd.setCursor(0,1), it will print everything on line 0. I"ve used the same LCD, different size before and never had this issue.

You should make the LCD"s connection pins on the bottom, like on the RGB backlit LCD"s (https://www.sparkfun.com/products/10862). I like standing them straight up and down on breadboards. If I tried that with this one, it would be upside down.

I"m having a problem with this lcd, I can"d print custom caracters, I tried the code that this site http://icontexto.com/charactercreator/ gives you when you create a custom char, tried some other examples, but nothing, I always get just two vertical bars on the second and fourth columns.

I love this little LCD! It works great. However, I"m having a wicked hard time finding hardware (i.e. self-clinching PEM stud) that I can use to mount this. The 2.5mm mounting holes are pretty small. I"m trying hard not to use glues.

I"m also having trouble with LCD. I hooked up at 10kOhm pot, but when I upload the code it just gives me random pixels and characters. Is my Atmega on my Arduino Uno shot?

Also no external resistor is needed for the backlight; just like almost all other 5v character LCDs this one has a series resistor right on the board. Mine is 130 ohms.

I was able to achieve much better contrast by applying a slightly negative voltage on the Vo pin (3). Minus 200 mV did the trick. I seem to remember that LCD"s used to have a negative output for just this reason. I don"t know what the rating of this pin is, so proceed with caution.

I made it work by using the same schematic featured in the LiquidCrystal Arduino library page, except LCD pin 6 is hooked to a digital PWM instead of a potentiometer for controlling contrast.

Pretty cool little LCD. I had some problems initially with the 4bit LCD library, but after finding that the standard LiquidCrystal library supports 4-bit data lines it worked great.

Have you wired in the backlight? That tutorial doesn"t include wiring pins 15 and 16 on the lcd. I have hooked the backlight up to a pwm output so that I can turn it on and off via sketch.

I am also ahving this same problem. The LCD was great and easy to set up, but the brightness is really really poor. I installed a pot and all, but no dice.

Has anyone got this working with the LiquidCrystal or LCD4bit library? I am having quite a bit of trouble getting it to work reliably and am at the point where I am going to try and code my own library for it.

I"m also having heaps of trouble. I can sometimes get it to display text, maybe once out of every 30 attempts. And IF it decides to display anything it ends up garbling the message and locking up, not displaying the other strings in the sequence. Is this the LCD, my Arduino or the library? I tried using LCD4bit and a modified LiquidCrystal and they all yield the same, frustrating results.

Great little lcd, for basic output, debugging etc. Very easy to interface, and looks very slick! If you need a basic no frills LCD, this is a good buy.

Text: Optrex Numbering System DOT MATRIX Type LCD Modules DMC ­ 50000 N Y H U ­ S E B 1 Standard Pin Connections Pin No. Symbol Pin No. OPTREX CORPORATION HIGH CONTRAST LCD MODULE FEATURES , 7 1 Symbol 14 DB7 1. Type of Display: 2. Development Number: 3. LCD TYPE: 4. Background Color: 5. Operating Temp.: 6. Viewing Direction: 7. Display Mode: 40x4 Pin Connections Pin No. Symbol 1 DB7 2 DB6 3 DB5 4 DB4 5 DB3 Viewing Area W x H (mm) 6 DB2

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 HD44780 controller. This 16x2 character LCD uses the , characters displayed per line characterize LCDs into 16x2 , 40x2, and 40x4 dimensions. An LCD requires a , module. The following section describes one such LCD module. LCD Pin Name Description 1 VSS , eZ80Acclaim! MCU is a 16x2 character LCD controlled by the HD44780 controller by Hitachi. It features the , -0708 The connector for a Character LCD Module can be arranged as 14x1 pin header or as a 7x2 pin header

Abstract: lcd 16x2 instruction set 24 pin diagram of lcd display 16x2 16X2 LCD TIMING CHARACTERISTICS 16x4 LCD ddram STN negative Blue 16X2 lcd display TC162F 16 pin diagram of lcd display 16x1 16X4 LCD CHARACTER CODE Okaya Electric Industries

Text: OKAYA ELECTRIC INDUSTRI SflE D Pin Function Chart Ej?fci51fl3 OODDIOO T40 ■OKAJ Power Supply Requirements Pin Name I/O Function V» _ Ground; OV vœ _ +5V Vo _ Power supply for LC driving , MPU -» LCD Module ■1": Read MPU «- LCD Module E I Operation start signal for data read or write , "s NORMAL TEMP (+5VDC) WIDE TEMP (±SVDC) LCD v Module O vDD-VO VR 10KQ - 20KQ VDD LCD v Module SS vO , END TC162G 16X2 5X8 3.65X4.35 64.5 X 13.8 1/16 80.0 X 36.0 © © © © © © SIL TOP

Abstract: TC202A HEADER RT TC162C 16x1 LC display 16X2 LCD TIMING CHARACTERISTICS 16X2 LCD CHARACTER CODE 24 pin diagram of lcd display 16x2 lcd display 16x2 instruction set Okaya lcd

Text: OKAYA ELECTRIC INDUSTRI SfiE D b?t.21fl3 OODDIOO T40 OKAJ Pin Function Chart Pin Name I/O Power Supply Requirements Function V DD-VO LCD v V s s V o c V o RS R/W E DBO thru , MPU LCD Module "1": Read MPU LCD Module Operation start signal for data read or write Data Bus of , © © © © © © © © © © © © © © © © © | © | _ _ © © - 16X2 5X8 1/16 1 6X2 5X8 1/16 _ © _ _ 16X2 5X8 1/16 © © © © © © _ 16X2 5X8 1/16 © _ 16X2 5X8 1/16 © © _ 16X2 5X8 1/16 © © T

Text: PAGE ASIC / FOUNDRY 3 ASIC ORDERING INFORMATION 4 CMOS IMAGE SENSORS 5 LCD DRIVER ICs 5-6 LCD DRIVER IC ORDERING INFORMATION 7 MOBILE APPLICATION PROCESSORS 8 HDTV , ) 11. " - " 4 SAMSUNG SEMICONDUCTOR, INC. BR-07-ALL-002 AUGUST 2007 Image Sensors / LCD , -07-ALL-002 SAMSUNG SEMICONDUCTOR, INC. 5 SYSTEM LSI LCD Driver ICs BW STN GRAPHIC DISPLAY DRIVER IC FOR , in case of TCP BR-07-ALL-002 AUGUST 2007 LCD Driver IC Ordering Information SYSTEM LSI

Text: ) Supply Current LCD Driving Voltage Interface Pin Connection No Symbol Function No Symbol , sales@p-tec.net Tel: Fax: (719) 589 3122 (719) 589 3592 PC1602A-L( 16x2 ) Character LCD Display , ( 16x2 ) Character LCD Display Absolute Maximum Ratings at TA = 25 °C Features *16 Character, 2 Line , ) Supply Current LCD Driving Voltage Interface Pin Connection No Symbol Function No Symbol , sales@p-tec.net Tel: Fax: (719) 589 3122 (719) 589 3592 PC1602B-L( 16x2 ) Character LCD Display

Text: F8274 P9234 P72N4 64 80 100 128 144 PIN NUMBERS 16/32bit MCU C4RU1 24 32 64 , Type (KBytes) (Bytes) I/OPins Interrupt (Int/Ext) Timer/Counter SIO LCD (Seg/Com , Interrupt (Int/Ext) Timer/Counter Serial LCD Interface (Seg/Com) S3F9xxx (KS86) Series , LCD Interface (Seg/Com) ADC (BitxCh) PWM(1) (BitxCh) Max.Osc. Freq. Min Exe. Time (ns , 8x1, 16x2 12MHz 333 2.0~5.5 -25~85 Internal 8MHz RC Oscillator S3F8xxx (KS88) Series

Abstract: 16X2 LCD rohs 24 pin diagram of lcd display 16x2 pin diagram of serial lcd display 16x2 lm1117 3.3V pin architecture of lcd display 16x2 display 16x2 i2c 16x2 display 14 pin diagram of lcd display 16x2 usb/doc lcd 16x2 14 pin

Text: INTRODUCTION ADuC-MT7020 is small terminal board with USB link for PC, two buttons, LCD 16x2 with backlight , (bootloader enable) button ­ Two buttons ­ LCD 16x2 display with BACKLIGHT ­ 32 768 Hz , , connected to ADuC7020 pin 20 (P0.4). User button with name B2, connected to ADuC7020 pin 21 (P0.5). LCD 16x2 display with BACKLIGHT, connected as follows: RS ­ to ADuC7020 pin 34 (P4.2); R/W ­ to ADuC7020, Contrast for setting LCD contrast voltage. EXTERNAL CONNECTORS DESCRIPTION JTAG Pin # Signal Name

Text: REV. A PART NUMBER LCM-H01602DSF/DPNY 9.63mm CHARACTER HEIGHT, 16x2 CHARACTERS, 5 x 8 DOT MATRIX LCD MODULE, STN, TRANSFLECTIVE, 1/16 DUTY, 1/5 BIAS, WHITE LED BACKLIGHT, 12:00 VIEW. CONFIDENTIAL , /DPNY rev. REV. A E.C.N. NUMBER AND REVISION COMMENTS | DATE SEE PAGE #1 PIN CONFIGURATION PIN NO. SYMBOL LEVEL FUNCTION 1 Vss - POWER SUPPLY GND (OV) 2 Vbd - 5V Vo - FOR LCD DRIVE 4 RS H/L , 136 - mW LUMINOUS L IMOmA 15 20 - cd/m2 COLOR WHITE - 0,31 - X - 0,32 - Y \foD-Va: LCD

Text: (RB5). User button with name B2, connected to U1 - pin 37 (RB4). LCD 16x2 display with BACKLIGHT , : PIC-MT-USB is small development board for 40 pin PIC microcontroller. With its LCD , two buttons, USB, ICSP , €“ LCD 16x2 alphanumeric display with backlight – 2 Buttons – bi-color LED â , pin 30 (RD7). Potentiometer with name TR1 for setting LCD contrast voltage. Bi-colour status Led , includes R8 (10k) pull-up, ICSP pin 1, U1 - pin 1 (MCLR#). CLOCK CIRCUIT: Quartz crystal Q2 (20 MHz

Abstract: Display LCD 20x4 LCD ASCII CODE 20x4 pin diagram of serial lcd display 16x2 LCD 16X2 5V RS232 Driver LCD ASCII table CODE 16x2 explanation of 16x2 LCD lcd display 2x16 software command 16X2 LCD CHARACTER CODE display lcd 16x2 232

Text: connected to a PC"s 9- pin serial port, all you need is a "straight through" 9- pin female DB9 to 9- pin , display: Pin Number 1 2 3 4 5 6 7 8 9 Crystalfontz Display Function Not Connected Not , pin name DCD (Data Carrier Detect) Rx (Receive Data) Tx (Transmit Data) DTR (Data Terminal Ready , the LCD "s solder connector (J2). The supply"s ground should connect to the VSS terminal of the LCD "s solder connector (J2): 7 1 Pin Number 1 2 3 4 5 6 7 Pin Name Vss Vdd LED+ DATA_IN

Text: PIN NO. SYMBOL I/O FUNCTION 1 Vss P GND: DV 2 V5 P LCD DRIVER SUPPLY VOLTAGE 3 VDD P VDD: +3V 4 RS , 602CGSR3S67S 16x2 CHARACTER LCD MODULE, C.O.G STN GRAY, REFLECTIVE, 6:00 VIEW, W/PINS, IC: NT7605, 240 CGR0M , 602CGSR3S67S 16x2 CHARACTER LCD MODULE, C.O.G STN GRAY, REFLECTIVE, 6:00 VIEW, W/PINS, IC: NT7605, 240 CGR0M , = ^jg,1 + DECNAL PRECHDN +0.00 -CEQMAL PRECJSBN REV. PART NUMBER LCM-H1602CGSR3S67S 16x2 CHARACTER LCD MODULE. C.O.G STN GRAY, REFLECTIVE, 6:00 VIEW, W/PINS, IC; NT7605, 240 CGR0M,VLCD

Text: PRECISI0N MAX.= +0.00 -DECIMAL PRECISION REV. PART NUMBER LCM—H1602CGSR38678 16x2 CHARACTER LCD , ~C0M16 LCD PANEL 2 UNE X 16 CHARACTERS SEG0~SEG80 PIN DESCRIPTION PART NUMBER LCM —H1 602CGSR38678, the most positive lcd driving voltage. 8 vf p this pin is the input of yhe built-in voltage regulator , LCM—H1602CGSR38678 16x2 CHARACTER LCD MODULE, C.O.G STN GRAY, REFLECTIVE, 6:00 VIEW, W/PINS, IC: SSD1801Z, 240 , .= ISmi -DECIMAL PRECISION REV. PART NUMBER LCM—H1602CGSR38678 16x2 CHARACTER LCD MODULE, C.O.G

Text: . 13 Figure 8. WIZ200WEB 16x2 LCD , is the slide switch. Figure 7. WIZ200WEB Base Board Switch 16X2 character LCD 16x2 LCD is , rights reserved WIZ200WEB User"s Manual PORTE. 14 Figure 8. WIZ200WEB Base Board 16x2 LCD , . 31 6.3. Board Dimensions and Pin Assignment , . 32 6.3.3. 7. Pin Assignment

Text: -CEC1MAL PRECISION REV. A PART NUMBER LCM-H01 602DWF/CB2 16x2 CHARACTERS LCD MODULE, FSTN , \ 16x2 . 1/16 DUTY, 1/5 BIAS DB ( db a e -R/W-RS-Vss - VDD -VD- A-K- LCD CONTROLLER LSI & DRIVER , PRKI9I!N MAX, I _ +Q.OD " -CFOMAL PRECISION REV. A PART NUMBER LCM-H01 602DWF/CB2 16x2 CHARACTERS LCD , REV. SEE PAGE #1 rev. A E.C.N, NUMBER AND REVISION COMMENTS | DATE PIN CONFIGURATION PIN NO. SYMBOL LEVEL FUNCTION 1 % - POWER SUPPLY 5V 2 Vss - GND <0V) 3 Vo - FOR LCD DRIVE 4- RS H/L

Abstract: Display LCD 20x4 pin diagram of serial lcd display 16x2 16x2 serial lcd 20X4 LCD display display 16x2 datasheet 20x4 characters Display Driver explanation of 20x4 LCD led scrolling display lcd display 2x16 software command

Text: connected to a PC"s 9- pin serial port, all you need is a "straight through" 9- pin female DB9 to 9- pin , display: Pin Number 1 2 3 4 5 6 7 8 9 Crystalfontz Display Function Not Connected Not , pin name DCD (Data Carrier Detect) Rx (Receive Data) Tx (Transmit Data) DTR (Data Terminal Ready , the LCD "s solder connector (J2). The supply"s ground should connect to the VSS terminal of the LCD "s solder connector (J2): 7 1 Pin Number 1 2 3 4 5 6 7 Pin Name Vss Vdd LED+ DATA_IN

Abstract: LCD display module 16x2 characters HD44780 16x2 lcd HD44780 hitachi 16x2 lcd datasheet hitachi 16x2 lcd lcd 16x2 instruction set HD44780 16x2 LCD ASCII CODE 16x2 16X2 LCD CHARACTER CODE LCD ASCII table CODE 16x2

Text: . . . . . 7 Flowchart-Initializing the HD44780 Controller on the 16x2 LCD Module . . . . . . . . , Interface for the Z8 Encore!® MCU 3 Pin Description The Character LCD Module, with its onboard HD44780, pins are listed in Table 1. The connector for the Character LCD Module can be arranged as a 14 x 1 pin , . Table 1. Pin Descriptions of a Typical HD44780-based Character LCD Module Pin No. LCD Pin Name , HD44780-based Character LCD signal and data pin to interface with a Z8 Encore!® MCU. This configuration uses

Text: LCM-E01 602DSR 5.56 CHARACTER HEIGHT. 16x2 CHARACTERS. LCD MODULE. 5 x B DOT MATRIX, SERIAL INPUT, STN , . D PART NUMBER LCM-E01 602DSR 5.56 CHARACTER HEIGHT, 16x2 CHARACTERS, LCD MODULE, 5 x B DOT MATRIX , . D PART NUMBER LCM-E01 602DSR 5.56 CHARACTER HEIGHT, 16x2 CHARACTERS, LCD MODULE. 5 x B DOT MATRIX , . D DATE PIN CONFIGURATION PIN NO, SYMBOL i/o FUNCTION 1 Vss 1 POWER SUPPLY CND (OV) 1 VDD 1 , SUPPLY VOLTAGE FOR LCD DRIVE Vo Ta=2!fC - O.B - V AT89C2051-12SI CONTROLLER RS R/W DB0~DB7 ICL7660

Text: pioneering technology-intensive service companies for LCD , LCD module products a n d c o m p l e t e p a n e , all of our existing and potential customers. O ur core business: Wide range of LCD "s Including monochrome LCD ,CSTN and TFT; Complete panel solutions Including display, keyboard, housing and assembling , analysis on end applications; Complete cost / benefit analysis of various types of LCD "s; Working with end users to decide the very best LCD technologies and manufacturers; Working with factories to

Text: REV. A PART NUMBER LCM-H01 602DWF/C-1 B 16x2 CHARACTERS LCD MODULE, TOP VIEW, FSTN, TRANSFLECTIVE , DIAGRAM\ 16x2 . 1/16 DUTY, 1/5 BIAS DB 7 s DB □ E -R/W -RS -Vss-VDD -Vo- c5 A-K- LCD CONTROLLER LS , 602DWF/C-1 B 16x2 CHARACTERS LCD MODULE. TOP VIEW. FSTN, TRAN5FLECTIVE, ONE CHIP BLUE LED BACKLIGHT, 1 , -1 B REV, SEE PAGE fl REV. A E.C.N. NUMBER AND REVISION COMMENTS | DATE CONFIGURATION PIN NO. SYMBOL LEVEL FUNCTION 1 % - POWER SUPPLY 5V 2 Vss - GND (OV) 3 Vo - FOR LCD DRIVE 4 RS H/L

Abstract: DB9 connector to LCD interface lcd display 2x16 MCP2551 layout E2214 USB female Connector pcb layout DM9000E K6R4016V1D lpc interface sram 1Mb philips display 16x2

Text: memory Jumpers for ISP/RUN mode Ethernet controller with DM9000E and RJ45 connector LCD 16x2 DISPLAY , LCD 16x2 DISPLAY with BACKLIGHT 2 BUTTONS SD/MMC connector POTENTIOMETER connected to AIN0 RS232, reduces code by more than 30% with minimal performance penalty. With their 144 pin package, low power , connector with ARM 2x10 pin layout for programming/debugging with ARM-JTAG 1MB (256Kx32bit) 8/10 ns , 2x10 pin layout for programming/debugging with ARM-JTAG 1MB (256Kx32bit) 8/10 ns K6R4016V1D SRAM 2MB

Text: SW1-SW4 enables various on-board peripherals. 16x2 character LCD display. Potentiometer for LCD , . BigPIC5 MCU card supports 64 and 80- pin PIC microcontrollers. Graphic LCD display (GLCD). Touch , . Jumpers to determine input pin performance in idle state (connected to pull-up or pull-down resistors

Abstract: Display LCD 20x4 display module lcd 4x20 radio shack baud WR232Y02 20X4 standard values of Lcd 16x2 to microcontroller pin architecture of lcd display 16x2 16x2 display display lcd 16x2 232

Text: 602DWF/C-B 16x2 CHARACTERS LCD MODULE, FSTN, TRANSFLECTIVE, ONE CHIP BLUE LED BACKLIGHT, 1/16 DUTY, 1/5 , precision REV. A PART NUMBER LCM-H01 602DWF/C-B 16x2 CHARACTERS LCD MODULE, FSTN, TRANSFLECTIVE, ONE , , NUMBER AND REVISION COMMENTS | DATE CONFIGURATION PIN NO. SYMBOL LEVEL FUNCTION 1 % - power supply 5V 2 Vss - gnd <0v) 3 vo - for lcd drive 4- rs h/l register select signal hr data input l , led backught Vdq-VO: LCD DRIVING VOLTAGE VR: I BKfl, —20K O ELECTRICAL CHARACTERISTICS \ VDD

Text: . 15. On-board real-time clock/calendar. 16. 17. 18. 19. 20. 21. 22. 16x2 characters LCD , possible to program new MCUs in coming years. 6. MCU Card supports all 64 and 80 pin PIC MCUs. 7. Direct port access connectors. 8. Jumpers to determine input pin performance in idle state (connected , pins RA0-RA5, reference voltage for MCUs A/D converter and LCD /GLCD backlight. 10. 67 push-buttons , push-button press. 12. RESET push-button. 13. Each I/O pin corresponds to one LED. 14. Switch group SW5

We come across Liquid Crystal Display (LCD) displays everywhere around us. Computers, calculators, television sets, mobile phones, and digital watches use some kind of display to display the time.

An LCD screen is an electronic display module that uses liquid crystal to produce a visible image. The 16×2 LCD display is a very basic module commonly used in DIYs and circuits. The 16×2 translates a display of 16 characters per line in 2 such lines. In this LCD, each character is displayed in a 5×7 pixel matrix.

Contrast adjustment; the best way is to use a variable resistor such as a potentiometer. The output of the potentiometer is connected to this pin. Rotate the potentiometer knob forward and backward to adjust the LCD contrast.

A 16X2 LCD has two registers, namely, command and data. The register select is used to switch from one register to other. RS=0 for the command register, whereas RS=1 for the data register.

Command Register: The command register stores the command instructions given to the LCD. A command is an instruction given to an LCD to do a predefined task. Examples like:

Data Register: The data register stores the data to be displayed on the LCD. The data is the ASCII value of the character to be displayed on the LCD. When we send data to LCD, it goes to the data register and is processed there. When RS=1, the data register is selected.

Generating custom characters on LCD is not very hard. It requires knowledge about the custom-generated random access memory (CG-RAM) of the LCD and the LCD chip controller. Most LCDs contain a Hitachi HD4478 controller.

CG-RAM address starts from 0x40 (Hexadecimal) or 64 in decimal. We can generate custom characters at these addresses. Once we generate our characters at these addresses, we can print them by just sending commands to the LCD. Character addresses and printing commands are below.

LCD modules are very important in many Arduino-based embedded system designs to improve the user interface of the system. Interfacing with Arduino gives the programmer more freedom to customize the code easily. Any cost-effective Arduino board, a 16X2 character LCD display, jumper wires, and a breadboard are sufficient enough to build the circuit. The interfacing of Arduino to LCD display is below.

The combination of an LCD and Arduino yields several projects, the most simple one being LCD to display the LED brightness. All we need for this circuit is an LCD, Arduino, breadboard, a resistor, potentiometer, LED, and some jumper cables. The circuit connections are below.

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: