Difference between graphical and ordinary lcds.
Normally graphical lcd which is easily available in the market and is best to getting start in the field of graphical lcds is 128×64. It has 128 coulombs and 64 rows. You can display your data in 128×64 dot matrix.
Graphical Lcd controller
Lcd is further divided in to two equal half’s. First half from 1 to 64 coulombs in controlled by first KS0108 controller. The second KS0108 controls the second half from 64 to 128 coulombs. The figure on the left explains about how the controller’s are dedicated for half’s.
Further graphical lcd half’s division
Page distribution in Pixels
The figure on the left shows a single pixel of graphical lcd. Each pixel is built up by 8 dots. 1 coulomb and 8 rows constitute a pixel.
Graphical Lcd (128×64) Pinout
Like other lcds we also first have to initialize graphical lcd. By initializing I mean in which format we want to use our lcd. Like which half I want to use. Which page of which half I want to use. What is my x-address? What is my y-address?