Newhaven Display Forum

Newhaven Products => TFTs => Topic started by: Tim_Cole on December 17, 2014, 07:26:17 PM

Title: NHD-7.0-800480EF-20 Color Modes
Post by: Tim_Cole on December 17, 2014, 07:26:17 PM
Just to keep things organized, I  thought I'd raise this as a separate question.

Does the NHD-7.0-800480EF-20 support only 24-bit BGR pixels, or can I use any of the other SSD-1963 color modes?

Regards,
Tim Cole
Title: Re: NHD-7.0-800480EF-20 Color Modes
Post by: Paul_B on December 18, 2014, 07:57:13 AM
Hello Tim,

NHD-7.0-800480EF-20 supports Up to 24-bit BGR. It can support any of the other SSD-1963 color modes.

Have a good one!
Title: Re: NHD-7.0-800480EF-20 Color Modes
Post by: Tim_Cole on December 18, 2014, 02:26:04 PM
Hi Paul,
Thanks for the quick answer.

Just to clarify, is there anything more needed to specifying the color mode than simply sending the correct command to the SSD-1963?

Cheers, Tim
Title: Re: NHD-7.0-800480EF-20 Color Modes
Post by: Michael_L on December 19, 2014, 12:13:50 PM
The color mode for the SSD1963 is dictated by the interface you are using.  I've included an image below of a table from page 17 of the SSD1963 datasheet that shows the different available interfaces and their corresponding color depth/pixel arrangement.  On page 78 (second attached image) the spec gives an explanation of the set_pixel_data_interface command (0xF0).  This is the command you will use to select what interface/pixel format you want to use.  You will notice from these images, when using the 8-bit interface for the SSD1963, you must use 24bpp color depth (3 writes per pixel).  The NHD-7.0-800480EF-20 controller board only allows the user to use an 8-bit interface, while the NHD-7.0-800480EF-34 allows for up to an 18-bit interface (16-bit being the most common).  The two controller boards are identical except for the FFC connectors you would be connecting your MCU to (20-pin connector vs 34-pin connector).  The board has solder pads for either connector, allowing you to modify it if you have the means to.