NHD-5.0-800480TF-ATXL-CTP with LPC1788

Comments

4 comments

  • Michael_L

    If the TFT interface on that microcontroller can support up to 1024x768 pixels, then using our 800x480 pixel TFT with it will be fine.
    To calculate frame buffer:
    800 (horizontal pixels) x 480 (vertical pixels) x 3 (24bpp [3 bytes per pixel]) = 1,152,000 bytes.

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  • sai

    Hi micheal,
     Thanks for the reply,
    as per calculation frame buffer size is 1.15MB so i decided to go with external SDRAM interface using External Memory Controller(EMC) in Controller.
    Is there any PCB guidelines for TFT data signals lines strip impedance in the PCB?? generally what could be the Impedance value for the Data line to interface with TFT display???

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  • sai

    could anyone please suggest LED driver circuit for NHD-5.0-800480TF-ATXL-CTP display, currently i am using FAN5333B IC for LED Back light driving circuit but when i connected display LED+ voltage drops from 28V to 15V so Display back light is not enabling. 

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  • Michael_L

    Morning,

    There must be a mistake in your schematic, for your reference please see the attachment.

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