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Altera_Forum's avatar
Altera_Forum
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14 years ago

problem with LCD Refreshing rate

Hello, I recently designed a model in Quartus which connects to a color LCD device and shows what ever is on the SRAM. I am using the NIOS processor to fill the RAM with the relevent Data (P...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

You are again calling 'sram' something which I guess is not a sram (e.g. a static random access memory), since you say it's not a memory but you use it like a memory.

What exactly is this?

Case 1:

You only have the LCD dsplay and Terasic provided you no interface logic at all.

So, ideally you must design a component which can store the whole screen information and automoatically drives the LCD pins at the rated frequency in order to keep it refreshed. On the Nios side you update the controller memory only when you need to change the image on the display.

Case 2 (more probable)

Terasic sent you a sample project together with the LCD. The project includes a display controller and sample code to drive it. It might have not a great performance (like most demo projects), but it will surely work and it is a good starting point.