NHD-4.3-480272EF-ATXL#-CTP how to interface this with LPC2368

npn

• May 06, 2014 14:07

Hello,

     I'm looking for a display 4.3 inch. I have chosen NHD-4.3-480272EF-ATXL#-CTP but my doubt is how to interface this with LPC2368?? does it has inbulit controller?? I am new to TFT displays so how to Program it?

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  Michael_L

  • May 06, 2014 15:10

  We sell controller boards that can be used with our displays.  For that 4.3" TFT, you can use the NHD-4.3-480272MF-20 Controller Board (link below):
  
  https://newhavendisplay.com/controller-board-for-4-3-tft-displays-20-pin-ffc-8-bit-parallel/
  
  The datasheet can be downloaded by accessing that link.  We also have example code available for it here:
  
  https://newhavendisplay.com/content/app_notes/TFT_43M.txt

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  cuevas1208

  • July 16, 2014 15:10

  I’m very new to LCD interfacing to a micro-controller. I am using the Newhaven Display Intl NHD-4.3-480272EF-ATXL#-CTP on LPC2478-32 Developer's Kit. I am train the code similar to:

  https://support.newhavendisplay.com/hc/en-us/community/posts/10981489046679-Color-problem-with-NHD-5-0-800480TF-ATXL-CTP

  Based on the IAR sample code but with these settings:

  
  #define C_GLCD_REFRESH_FREQ     (50HZ)
  #define C_GLCD_H_SIZE           480
  #define C_GLCD_H_FRONT_PORCH    2
  #define C_GLCD_H_PULSE          41
  #define C_GLCD_H_BACK_PORCH     2
  #define C_GLCD_V_SIZE           272
  #define C_GLCD_V_FRONT_PORCH    2
  #define C_GLCD_V_PULSE          10
  #define C_GLCD_V_BACK_PORCH     2
  I have not got my screen back light to turn on, what connections am I doing wrong? (
  http://i61.tinypic.com/2ev445v.jpg )
  https://newhavendisplay.com/content/specs/NHD-4.3-480272EF-ATXL-CTP.pdf
  http://www.embeddedartists.com/products/kits/lpc2478_kit.php

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  Paul_B

  • July 17, 2014 15:10

  Hello!
  
  Based on the wiring diagram you provided, it would appear that you do not have the displays LED-Anode (LED+) or LED-Cathode (LED-) connected to anything.
  
  LED+ will need to be supplied 40mA @ 19.2V
  
  LED- will need to be connected to GND
  
  Hope this helps!

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  cuevas1208

  • July 17, 2014 21:10

  I connected pin#1 to GND and pin#2 to  40mA @ 19.2V from a power supply, and I still do not see the Backlight turn on.
  * Do I need to connect some type of resistor in series between pin#2 and the power supply?
  * What are the minimum requirement(pins) for the Blacklight to turn on?  I do not have the 6 pins from the touch screen connected do they have to be connected?

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  Paul_B

  • July 17, 2014 22:10

  Hello,
  
  You have swapped the pins, in your wiring diagram LED+ is connected to GND and LED- is connected to 40mA @ 19.2V.
  
  LED+ will need to be supplied 40mA @ 19.2V
  
  LED- will need to be connected to GND

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  Paul_B

  • July 21, 2014 22:10

  Hello,
  
  No code / initialization sequence is required to turn on the displays backlight. Simply applying 40mA @ 19.2V to pin 2 and Gnd to pin 1 will turn on the backlight  
  
  Please verify the operation of Pins 1 & 2 with a DMM.
  
  Hope this helps!

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  cuevas1208

  • July 22, 2014 22:10

  Thank you for your help, it works

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  Paul_B

  • July 23, 2014 22:10

  Very nice, enjoy your new TFT!  

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