ERMSYG-2 is lcd module 20×4 display datasheet character,wide temp, yellow green led backlight,stn lcd,3v/5v power,parallel interface,hd or. · Fax · · [email protected] LCD MODULE 4×20 – mm WITH LED BACKLIGHT Y/G. This is a basic 20 character by 4 line display. Utilizes the extremely common HD parallel interface chipset (datasheet). Interface code is freely available.

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Parts tamper ed with by grinding, engraving, drilling, cutting or applying coatings of any kind.

There won’t be anything spectacular about this tutorial, there are already good articles about this stuff for all kinds of devices. Write Your Own Review Only registered users can write reviews. We promise the long terms continuity supply and would never end supply. It’s because the LCD actually acts as 2-line display, to make it more confusing they alternate.

20×4 Character LCD Display

The images and the screenshots provided here will guide you for your questions. In my case I just enabled the display, I don’t want to see the cursor. If you are a careful reader you would notice, that the LCD in the circuit diagram is 16×2 instead 20×4 like in title.

It can be used in any embedded systems,industrial device,security,medical and hand-held equipment.

So I have some experience and understanding how the character LCD works. It has to be twice, since we are sending the upper bits and the lower bits.

20×4 White on Blue Character LCD with Backlight

Now you should be able to send text in datxsheet very user friendly manner. Moreover, arduino has bunch of LCD libraries available for download for free.

Taking into account what I now said, we can cld a simple code for sending a byte void SimpleLCD:: And from there it is great for all. It probably would be a good idea to implement a way to move the cursor around the screen. DDRAM is used to temporary store the characters the display will show. First thing we want to do is to initialize the display.


We will, at our option, either a repair the product using new or refurbished parts, or b replace the product with a lcr or refurbished product. Entry mode Final step you have to take to initialize the display.

As the names already suggest instruction register will be accessed for configuring and writing instructions to the LCD. Of course, we wouldn’t just leave you with a datasheet and a “good luck!

20×4 Character LCD Display, 20×4 LCD Display, LCD Display – Winstar

We understand you probably worry whether we still offer the display after your long development time. Backorder notices are listed on your shopping cart.

That’s because in eagle by default I couldn’t find one with 20×4. Taking into account what I now said, we can construct a dahasheet code for sending a byte. So let’s make a coordinate mapping function. If you face any Please refer to page 28 in datasheet. Created by Raivis Strogonovs, August dwtasheet, Try to read the datasheet and improve my code to support custom characters.

I2C 20×4 Arduino LCD Display Module

Another thing, because we are using lcs bits, we have to trigger the enable pin to read the upper 4 bits and then lower 4 bits. Instruction register for write Busy flag: See the picture below:. Pin Function RS Selects registers. IR – instruction register; DR – data register. Until we get to assigning coordinates where the text should be written.

Basically those are all the necessary functions to communicate with the LCD. Stock levels are based on item’s sales history. Important is to remember what is shown in figure 9 on page However, it is not very user friendly, it would be easier for a programmer to be able to write XY coordinates rather than CGRAM address. Four high order bidirectional tristate data bus pins. Anyway, remember at the beginning I was describing how the data is sent to the HD For example, function set will be NF You don’t want to change your data until it has finished writing it to the LCD.


You probably noticed I’m using some new functions. Okay, now we have the ability to move the cursor by specifying it’s address. The addresses, initializations etc. So now we know exactly ld we have to do to initialize the LCD.

Actually, that would be a good homework. I chose to write it for Arduino this time, because I have Sanguinololu bought for my datashheet printer, and at some point I want to write a LCD user interface for it, datashwet scratch. See page 24 ,cd datasheet, what command we have to send to read the busy flag, and which bit we will have to read.

However, most of the displays will use HD as LCD controller, so if you understand how to use a 16×2 or 20×4 display or any character display with this chipset, you should be able to cope with any sized character LCDs.

Essentially improving the previous code. The introduction to the data encryption is very much helpful as you will get to know about the data encryption procedure which might help you to protect the files and folders. Those are for configuring the things I mentioned before.