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Thread: DG32240 Graphic LCD (interfacing?)

  1. #1
    Registered User MP3IAN by Ian Gregory's Avatar
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    Jan 2002
    Location
    Wollongong, Australia
    Posts
    158

    DG32240 Graphic LCD (interfacing?)

    I have a DG32240 Graphic LCD (can be seen at http://www.datavision.com.tw/english/index.html under the product section "LCM-DG")

    I would like to interface it to my PC buut am unsure how to do it! do i do it through the parallel port? if so does anyone have a wiring diagram?

    the pins are:
    1 UD0 H/L Display Data
    2 UD1
    3 UD2
    4 UD3
    5 DISP OFF H/L H:ON L:OFF
    6 FRAME H Frist Line Marker
    7 NC --
    8 LOAD H L Data Latch
    9 CP H L Data Shift
    10 VDD -- Power Supply for Logic
    11 Vss -- GND
    12 VEE -- Power Supply for Logic
    13 V0 -- Operating Voltage LCD Driving
    14 FGRD -- Front Panel Ground

    What software should i use to run it?

    Cheers!
    Ian

  2. #2
    Raw Wave Rob Withey's Avatar
    Join Date
    Apr 2000
    Location
    Bedfordshire, UK
    Posts
    2,139
    Looking at data sheets for this kind of lcd, it seems to me that you'll need an lcd controller to shift the data in at the high rate that it needs it. They have no internal frame buffer to hold the image and require an image to be continually shifted in. I'm pretty sure you won't be able to hook it up to your parallel port. My source of info is this site:

    http://www.microtipsusa.com/products...html#G32240TAB

    They have lots of 32240 lcds, all similar in interface spec.


    Rob
    Old Systems retired due to new car
    New system at design/prototype stage on BeagleBoard.

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