Graphical LCD

The graphical LCD has a 128×64 resolution and can be used to display monochrome images, custom texts in different fonts etc. Graphical LCD uses two ports, J41 and J42. By default, we can connect it to J43 (Port D) and J44 (Port A).

The switch SW2 should be turned ON to use the Graphical LCD.

Graphical LCD section in OpenLab

Pin arrangement

GLCD1 – Control Port

GLCD1

1

2

3

4

5

6

7

8

Pin Name

EN

R/W

RS

CS1

CS2

RST

NC

NC

EN – LCD Enable bit

R/W – Read/ Write bit. High for Read and low for Write

RS – Register Select bit

CS1, CS2 – Chip select bits of internal controller

RST – Reset

NC – No connection

GLCD2 – Data Port

GLCD2

1

2

3

4

5

6

7

8

Pin Name

DB0

DB1

DB2

DB3

DB4

DB5

DB6

DB7

DB0-DB7: LCD Data Port

How to Use Graphical LCD in OpenLab

  • Connect J42 (GLCD1) to J44  (Port A) or any other available port. Please note that first six pins are needed to operate GLCD
  • Connect J41 (GLCD2) to J43 (Port D) or any other available port. It uses all the 8 pins of that port. So you can use Port D/Port B for this purpose.
  • Switch ON the SW2 switch to turn ON the section.
  • Define the used ports as output

Reference

Graphics LCD libraries for 128×64 resolution are available on this link. You can use this for advanced usage: http://en.radzio.dxp.pl/ks0108/

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  1. […] LCD with PIC Microcontroller, PIC needs one 8 bit port (data port) and a 6 bit port (control port). Refer this guide for bit description of the […]

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