Below is the Pinout and Pin Description of 16×2 LCD Module: 16×2-LCD-Module- Pins used to send Command or data to the LCD. In 4-Wire. 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. Matrix Multimedia LCD Display LCD Display datasheet . To send a command to the LCD, data must be sent in two steps, the MSB followed by the LSB [byte.

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This will help you identify which pin is which. But I couldn’t control the relay since the output is 2.

16×2 LCD Interfacing in 8bit mode | My journey with Microcontrollers and Electronics

Q2 of is connected to Enable pin of LCD. Contrast adjustment; through a variable resistor. Busy Flag is an status indicator flag for LCD. The character generator ROM generates 5 x 8 dot or 5 x 10 dot character patterns from 8-bit character codes see Figure 5 and Figure 6 for more eatasheet.

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Hi Manpreet, thanks for your neatly presented post. Sends data to data pins when a high to low pulse is given. So one should check the status of this flag before sending the next command word or data. LCD Liquid Crystal Display screen is an electronic display module and find a wide range of applications.

Notify me of new comments via email. So is best suited for every application.

16×2 LCD Display Module – Pinout & Datasheet

You can draw your own character by saving the pattern of pixels. We will discuss more on LCD instuction set further in this tutorial. My lcd is able to print integers through this code but prints garbage when I send a string. As you can see in both the code maps, the character code from 0x00 to 0x07 is occupied by the CGRAM characters or the user defined characters.


So just solder male headers to your launchpad and then take 5V to a breadboard and then give it to your LCD. So you rotate the data you need to send by 4 bits so that the higher nibble comes to the lower nibble location send those 4 bits and then send the lower nibble.

The pin features are explained in the table. But then they have also printed 16 and 1 on the back of LCD, so no need to worry about connecting the pins inverted. DB0 to DB7 are the databus lines. Display data random access memory. Could you please guide me what should i do. So in embedded c we make use of shift operator to achieve bit rotation which in assembly is achieved by using rotate instructions.

I am going to take an example. Main thing is take 5V from launchpad. What is the error that you are getting. As discussed in the previous section, there must be some delay which is needed to be there for LCD to successfully process the command or data.

The LCD can work in two different modes, namely the 4-bit mode and the 8-bit mode. In this LCD each character is displayed in 5×7 pixel matrix. The contrast adjust input is nothing but output taken from a pot.

But the major drawback is that it needs 8 data lines connected to datashedt microcontroller. Backlight V CC 5V. Can you guide me a little. Some important command instructions are given below: The unwanted data pins of LCD i. For code explanation watch: The following instructions are executed during the initialization.


Pin description is shown in the table below. This site uses cookies. So for example you need the timing details for the write mode you will get the values from the commandx. Instruction register corresponds to llcd register where you send commands to LCD e. I hope you are still active on this blog. In the next section of the tutorial we will see the initialization with some of the coding examples in C as well as assembly.

So we have used the concept of pointers here.

By continuing to use this website, you agree to their use. Interface GPS with Arduino. Click to learn more about internal structure of a LCD.

We just send the bytes one by one. Initialization by instruction is used and is recommended most of the time.

As mentioned in the Note, there are certain condtions that has to be met, if user want to use initialization by internal reset circuit. A Single character with all its Pixels enabled is shown in the below picture.

Note if you use code composer studio to do this the file is already stored in the current project working folder.

It can generate 5 x 8 dot character patterns and 32 5 x 10 dot character patterns.