Looking for driver controller to interface a PIC with a QVGA
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Author:  bruckster [ Wed Apr 08, 2009 18:19 ]
Post subject:  Looking for driver controller to interface a PIC with a QVGA

I am trying to drive a 3.5" 320 x 240 color TFT (Varitronix COG-T350MCQQ-01 R0 with built-in Himax HX8238-D digital driver) from a 32-bit Microchip PIC (PIC32MX440F128L). Microchip claims this is possible, but I am running into problems.

The issue is that the PIC does not have an RGB interface, it only has an Intel 80 style interface (DB0 – DB7, RD/WR, EN, A0, and CS). But the display only accepts an RGB interface (R0 - R7, G0 - G7, B0 - B7, HSYNC, VSYNC, DOTCLK, DEN).

So, what I need (I think) is a driver controller that accepts Intel 80 and spits out RGB. But i'm having a really hard time finding one of these. I found a webpage for a Solomon SSD1297, but they don't make them in chip form or sell them anywhere that I can find.

Does anyone know of anything that does the trick that I can purchase online somewhere?

Or, does anyone know of a 3.5" QVGA TFT that has a built-in driver that accepts Intel 80 format? I spoke with one display manufacturer who claims that no such thing exists.

Can anyone help?


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