20x4 lcd display specifications brands
The Displaytech 204G series is a lineup of 20x4 character LCD modules. These modules have a 98x60 mm outer dimension with 77x25.2 mm viewing area on the display. The 204G 20x4 LCD displays are available in STN or FSTN LCD modes with or without an LED backlight. The backlight color options include yellow green, white, blue, pure green, or amber color. Get a free quote direct from Displaytech for a 20x4 character LCD display from the 204G series.
A 20x4 LCD display is very basic module and is very commonly used in various devices and circuits. These modules are preferred over seven segments and other multi segment LEDs. The reasons being: LCDs are economical; easily programmable; have no limitation of displaying special & even custom characters (unlike in seven segments), animations and so on.
A 20x4 LCD means it can display 20 characters per line and there are 4 such lines. In this LCD each character is displayed in 5x7 pixel matrix. This LCD has two registers, namely, Command and Data. This is standard HD44780 controller LCD.
Adding to what N1VG posted, you can indeed control this module, or any other HD47780-based character LCD module for that matter, with six lines. If you"re using an Arduino as the brains for your project, the LiquidCrystal library that comes with the Arduino IDE will run a HD47780-based module from six pins without having to manage things like passing nybbles to the module - you can just include LiquidCrystal.h, declare a new object (e.g., LiquidCrystal lcd(2,3,4,5,6,7); to use pins 2-7 to control the module), and just shoot data to it with the print() and write() commands. The library will handle the rest.
You can get by with 6 I/O lines for an HD44780. Just keep the RW pin pulled low (assuming you don"t need to read from the display) and connect only the high 4 data lines. You"ll need to send it a command to put the bus into 4-bit mode, and of course you"ll have to write to it one nybble at a time, but that"s not hard to do.
Not sure if this is normal. My LCD, using the liquidcrystal library, wraps to the third line after finishing the first (then it goes to the second, then the fourth), but addressing each line is normal when using setCursor().
The "solution" I came up with was simply to use the cursor positioning feature to write to the lines I wanted. Since you"re writing strings anyway, it"s not terribly difficult to do. If you"re making a display for a project, just account for what ends up on what line.
Does anyone know where I can get a pre-manufactured ribbon cable assembly suitable for use with this LCD? Soldering a thru-hole connector or pin header to the panel is something that can probably be done in our shop, but assembling our own cables from scratch may be a bit beyond our ability to do routinely... We just need a 6" cable with (say) female sockets (16x1) at both ends... The other end to plug into a suitable header on an Arduino-based PCB... Thanks for any tips, -Mike
I made a tutorial (in portuguese) about how to use, create custom characters and design menus for the LCD display. Take a look: http://engenheirando.com/arduino/displaylcd/
Can anyone confirm if this works with an Arduino Uno? Following these directions (http://arduino.cc/en/Tutorial/LiquidCrystal), no matter what I do I can only see solid blocks on two of the 4 rows when the pot is turned all the way down. Is this because the Arduino library is for a 16x2 character LCD and this one is a 20x4?
I forgot to buy breakaway male header pins for this LCD module. However, I do have spare female headers from a previous project. Would I be able to use the female headers?
This display has a parallel interface, so it will require about 6 I/O pins to run. The parallel protocol is complex, but there are good LCD libraries out there which make it easy to use. The difference between this and a serial display is that the serial display will only require one I/O pin.
If you use straight headers, the clips used to anchor the lcd to the board get in the way when you try to plug it into a breadboard with power rails on the side.
A very useful LCD - and, if you need it to take even less than 6 pins, there"s a library (by Chris Parish) for using it with a 74HC595 shift register that reduces it to 3 digital output pins. The library and Chris"s tutorial is here - http :// cjparish.blogspot.com/2010/01/controlling-lcd-display-with-shift.html
@Twiddler: Yes, it"s possible to write too fast. Check the write cycle timings in the datasheet. The enable signal can"t be cycled faster than 2MHz. Also after each command sent to the LCD, you have to wait until the busy flag is clear, or delay several microseconds to milliseconds (depending on which command).
STN Blue background with White Edge-lit backlight, bottom (or 6:00) viewing angle, Transmissive (negative), RoHS Compliant. Available in both 3V or 5V power supply options.This display has a wide temperature range: -20° Celcius to +70° Celcius which equates to (-4° Fahrenheit to +158° Fahrenheit).
STN (super twisted nematic) provides a sharper image and wider viewing angle than TN (Twisted Nematic). The cost for STN if approximately 5% higher than TN. STN is an ideal fluid for outdoor products that need to be read at various angles. The Transmissive polarizer is best used for displays that run with the backlight on all the time. This polarizer provides the brightest backlight possible. When you have a need for a bright backlight with lower power drain, transmissive is a good choice.
Focus LCDs can provide many accessories to go with your display. If you would like to source a connector, cable, test jig or other accessory preassembled to your LCD (or just included in the package), our team will make sure you get the items you need.Get in touch with a team member today to accessorize your display!
Focus Display Solutions (aka: Focus LCDs) offers the original purchaser who has purchased a product from the FocusLCDs.com a limited warranty that the product (including accessories in the product"s package) will be free from defects in material or workmanship.
FSTN White background, White Edge-lit LED backlight, bottom (or 6:00) viewing angle, Transflective polarizer, RoHS Compliant. Available in both 3-volt or 5-volt power supply options.This display has a wide temperature range: -20° Celcius to +70° Celcius which equates to (-4° Fahrenheit to +158° Fahrenheit).
FSTN (Film-compensated Super-twisted Nematic) provides a sharper contrast than STN by adding a film. The cost is approximately 5% higher than STN. FSTN works great for indoor and outdoor applications and is mainly used in graphic displays and higher end products. The Transflective polarizer is a mixture of Reflective and Transmissive. It provides the ability to read the LCD with or without the backlight on. It will work for all lighting conditions from dark with backlight to direct sunlight which makes it the most common choice. There is no cost difference between Transflective, Transmissive and Reflective.
Focus LCDs can provide many accessories to go with your display. If you would like to source a connector, cable, test jig or other accessory preassembled to your LCD (or just included in the package), our team will make sure you get the items you need.Get in touch with a team member today to accessorize your display!
Focus Display Solutions (aka: Focus LCDs) offers the original purchaser who has purchased a product from the FocusLCDs.com a limited warranty that the product (including accessories in the product"s package) will be free from defects in material or workmanship.
A 20 x 4 character LCD display with white text on a vivid blue backlit LCD. The pictures don"t do justice to the bright blue background with clear white text of this display.
This is a basic 20 character by 4 line display. Utilizes the extremely common HD44780 parallel interface chipset. Interface code is freely available. You will need ~11 general I/O pins to interface to this LCD screen. Includes LED backlight.
LCD display of 20 characters x 4 rows that uses the HD44780 interface found on most parallel character displays. It has a white backlight with blue characters.
Sunrise Semiconductor, established in the year 2002, with its flagship brand SUN, is a professional and well known LED DISPLAY distributor. With 13 years of extensive experience in the industry and support from reputed manufacturers from Greater China, Korea and Singapore, we make sure Standard brightness, Low current operation, Excellent appearance, Easy mounting on P.C.B or sockets, regularity in supply, strong technical support and above all best competitive prices.
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This is a basic 20 character by 4 line Alphanumeric display. White text on Blue background. Utilizes the extremely common HD44780 parallel interface chipset . Interface code is freely available. You will need Minimum 7 general I/O pins to interface to this LCD screen. Includes LED backlight. Works in 4bit Mode.