Thursday , March 30 2017
Home / Embedded Systems / Graphic LCD: GLCD Command Sheet HTML Version

Graphic LCD: GLCD Command Sheet HTML Version


Yet again I was looking for the GLCD command sheet in the internet and failed find any good resolution images that I can use for post references. Even the one of the data sheet looks really bad. So here I am with a HTML Version of the GLCD command sheet just like the one for the character LCD I posted a while back.

 

GLCD Command Sheet

Instruction
Code
Description
RS
RW
D7
D6
D5
D4
D3
D2
D1
D0
Display On/OFF  0 0  0  0 1 1 1 1 1 * Controls the Display ON or OFF. Internal status and display RAM data is not affected.
Set Address         (Y Address) 0 0  0 1     X Address ( 0 to 63 ) Sets the Y address in the Y address counter.
Set Page Address  (X Address) 0 0 1 0 1 1 1 Page (0-7) Sets the X address in the X address counter.
Display Start Line  (Z Address) 0 0 1 1 Display Start Line (0-63) Indicates the display data RAM displayed at the top of the screen.
Status Read 0 1 BF 0 On/Off Rst 0 0 0 0 Status Read
Write Display Data 1 0         Write Data Write data DB0 to DB7 into display data RAM. After writing instruction Y address is incremented by 1
Read Display Data 1  1         Read Data Reads data DB0 to DB7 from the display data RAM to the data bus.
Instruction bit names:

  • BF – 0 = can accept instruction, 1 = internal operation in progress.
  • Rst – 0 = Normal operation, 1 = Reset.
  • ON/OFF – 0 = Display ON, 1 = Display OFF.

About Siddharth

Siddharth is a Firmware Engineer, techie, and a movie-buff. His interests include, Programming, Embedded Systems, Linux, Robotics, CV, Carpentry and a lot more. At times, you could see some of his sunday projects converge on release quality. You get to know him on the following social channels.

Check Also

c2000_lauchpad

Interfacing 16×2 LCD with C2000 launchpad

  The C2000 Launchpad is an inexpensive evaluation module based on Piccolo family microcontrollers from …

  • Hi, I would like to ask is this GLCD command sheet, as it is labelled character LCD command sheet.

    Is there more info on how to control GLCD? How to send a command and data like Character LCD.

    Thanks in advance.

    • Hey, thanks for spotting the error. Yes it is the command sheet for the GLCD. Sorry for the mistake, I was using the character LCD command sheet as a template for making this post. I overlooked the heading. Now it has been updated.

      I have success fully interfaced the GLCD. I’m yet to clean up the code and document it. I’m planing to run a series like the one for character LCD, if everything goes as expected it should be here soon.. stay in touch. As a hint, sending the data to the GLCD is much similar to the Character LCD. Its like sending data to 2 LCDs sequentially by using the CS1 and CS2 pins to address the LCDs.

  • You are welcome. Looking forward for your post on GLCD. Very informative 😀

  • Wow, I am excited about your post on how to control a GLCD. Have you tried with any touch screen ?

    Thanks !

    • I’m glad you like the GLCD series even before they are out 🙂

      No Vincent, I haven’t had the chance to use a touch screen display.. those things are really costly here.

    • I’m glad you like the GLCD series even before they are out 🙂

      No Vincent, I haven’t had the chance to use a touch screen display.. those things are really costly here.

  • MasterOfDisaster

    ON/OFF – 0 = Display ON, 1 = Display OFF.

    Um isnt 1=on and 0=off like here: http://www.farnell.com/datasheets/1485489.pdf#page=15

  • Have u interfaced the GLCD. I need some library regarding GLCD. I interfaced JHD 128×64 with msp430 microcontroller. but I am planning to draw and load images on to it.

    • As a matter of fact I have!! Use this tool called “The Dot Factory” to convert images to hex values to be loaded in the GLCD.

  • ankush

    Hello siddharth,have u GLCD interfacing with lpc2148 code.
    Your information always helped me.
    What is proper connection diagram of GLCD mostly 3rd and 18th pin?
    Help me regarding lpc2148 arm with GLCD
    Thanks!

    • Hi Ankush, I have not worked with LPC2148 in the past.

Keep in touch with the current trends!
Did you like this article? Sign up and get our latest posts delivered to your inbox!
  We hate spam and never share your details.