2004 character lcd module display brands

Features：IIC/I2C interface was developed to reduce the IO port usage on Arduino board.* Old 1602 screen requires 7 IO ports but this module uses only two.* Much needed control panel IO ports can be used to add some sensors, SD card and so on.* A New High-Quality 4 Line 20 Character Lcd Module.* Potentiometer can be adjusted to control the contrast.* Back light can be turned off by removing the jumper on the back panel.Specification:* Interface: I2C* I2C Address: 0x27* Pin Definition : GND、VCC、SDA、SCL* Back lit (Yellow with Black char color)* Supply voltage: 5V* Size : 60mm×99mm* Contrast Adjust : Potentiometer* Backlight Adjust : Jumper

856 20x4 lcd display products are offered for sale by suppliers on Alibaba.com, of which lcd modules accounts for 38%, character displays accounts for 20%.

This the larger version of our 16x4 LCD display. Its 24 character by 4 line display has a very clear and high contrast white text upon a blue background/backlight. It also includes a serial I2C/IIC adaptor board pre-soldered to the back of the LCD. This means it can be controlled with just 2 I2C serial data pins (SDA & SCL) and so requires far less digital IO pins when controlled from a microcontroller. In total the module only requires 4 wires including 5V power and GND. Contrast adjustment is also provided by the daughter board via a potentiometer. If you plan to use this with an Arduino board you can download a compatible library and example sketch from our support forum here.

These modules are currently supplied with a default I2C address of either 0x27 or 0x3F. To determine which version you have check the black I2C adaptor board on the underside of the module. If there a 3 sets of pads labelled A0, A1, & A2 then the default address will be 0x3F. If there are no pads the default address will be 0x27.

It is possible for the I2C daughter board to bend and come in contact with the LCD module if enough pressure is applied to it. Please ensure when the LCD is installed in your application that no external object is applying pressure to the back of the module.

Need a 4 line 20 character lcd for your product? Crystalfontz keeps stock of the most popular colors and interfaces for standard 20x4 character LCDs. We pride ourselves in being able to get our 20x4 lcd display modules in your hands quickly and with all the product support you can use. Our CFA635, CFA735, CFA634 are all intelligent lcd display modules, that have their own command set making integrating them into your product a much faster process than using a standard LCD module. If you"re looking for a 40x2 character lcd, we have those as well!

This LCD module utilizes an I2C module to reduce the number of wiring in the system. An I2C device sends and receives data serially from the I2C bus. Implementing an I2C device requires some knowledge about addressing and framing the serial data in order to avoid data collision. The I2C MCU is accessible at address 0x27 by default; although it can be modified by soldering the A0, A1 and A2 jumpers on the I2C backpack PCB.