LCD modules are vey commonly used in most embedded projects, the reason being its cheap price, availability and programmer friendly. Most of us would have come across these displays in our day to day life, either at PCO’s or calculators. The appearance and the pinouts have already been visualized above now let us get a bit technical.

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. So, it will have (16×2=32) 32 characters in total and each character will be made of 5×8 Pixel Dots. 

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. Hence it will be a hectic task to handle everything with the help of MCU, hence an Interface IC like HD44780is used, which is mounted on the backside of the 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.

Features of 16×2 LCD module

  • 3 pin connection system like other Ebot sensors.
  • Operating Voltage is 4.7V to 5.3V
  • Current consumption is 1mA without backlight
  • Alphanumeric LCD display module, meaning can display alphabets and numbers
  • Consists of two rows and each row can print 16 characters.
  • Each character is build by a 5×8 pixel box
  • It can also display any custom generated characters
  • Available in Green and Blue Backlight.
  • The brightness can be adjusted by the knob present in the  bottom .