QVGA LCD + touchscreen implementation

[jolav151]

Hello everyone,

I'd like to implement a QVGA LCD with touchscreen in one of my personal design. I'm using a PSOC 3 to interface several sensors, and I want to display real-time values from them.

Here is the LCD that I plan to use :

http://www.optrex.com/products/partdetail.asp?PartNumber=T-55264GD057J-FW-ADN

I have to say that I am all new to graphic LCD, and I am still not sure of the hardware I will need to drive that. Do I need a specific LCD controller?

I know it may be possible to drive the screen directly from the PSOC, but i'm worried about getting it overloaded.

Thank you for you help !!

Jonathan

[JamesUWF]

You don't necessarily need a LCD controller.  If you want to display video or  VGA input, a COTS controller board would be an easy way to go.  If you are just going using it as a GUI, then you can probably drive it with TTL signal levels.  Does your controller board have any type of VGA or NTSC output?  If so, this could make for a nice shortcut.  After skimming through the datasheet, I'm guessing TTL appears to be the interface type, in which case designing a hardware interface shouldn't be too daunting.  If I'm wrong and it's LVDS, then you will need a level translator IC.  Either way, it's going to be quite a project, but a good one. 

Sorry I've only skimmed the surface with this subject, as my time is limited, but I hope this gives you some direction to start with. 

James