Author Topic: Display NHD-4.3-480272EF-ASXN#-T and NHD-4.3-480272EF-ASXN#-T revA  (Read 1891 times)


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We manufacture a device based on a RPi 3 Model B and we use the display NHD-4.3-480272EF-ASXN#-T.  Recently we have updated kernel to version 4.18.20-v7+ and in some devices we are experiencing display problems... After some investigation we saw that our devices were using 2 different revisions of the display:

NHD-4.3-480272EF-ASXN#-T and NHD-4.3-480272EF-ASXN#-T revA

Both of them purchased to Mouser with the same product reference in their catalog.

The current configuration in the file /boot/config.txt regarding HDMI is:

hdmi_mode= 87

hdmi timings is:

<h_active_pixels>   480
<h_sync_polarity>   0
<h_front_porch>      1
<h_sync_pulse>      41
<h_back_porch>      2
<v_active_lines>   272   
<v_sync_polarity>   0
<v_front_porch>      2
<v_sync_pulse>      10
<v_back_porch>      2
<v_sync_offset_a>   0
<v_sync_offset_b>   0
<pixel_rep>         0
<frame_rate>      60
<interlaced>      0
<pixel_freq>      9009000
<aspect_ratio>      3

and regarding colors, we have:


we also have (but I am not sure if related...)

Please, have you any idea to overcome this problem??


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Re: Display NHD-4.3-480272EF-ASXN#-T and NHD-4.3-480272EF-ASXN#-T revA
« Reply #1 on: April 25, 2019, 03:35:10 PM »
The revA version of the NHD-4.3-480272EF-ASXN#-T TFT now uses a Sitronix ST7282T2 controller that replaced the  Himax HX8257-A controller on the original vesion of the 4.3" TFTs. 

Please see the Engineering change notice on our website that was sent out to customers purchasing this display:

The image below shows the RGB timing characteristics for this display. 

Please see the current datasheet for more details:

Best Regards,


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