speed grade

Hi Fina,

Yes, of course,

You can see the Device Packaging Ordering Information in Cyclone III Handbook page 1-12..

Here the link : http://www.altera.com/literature/hb/cyc3/cyclone3_handbook.pdf

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Hi,

if i'm using CYCLONE III EP3C40F484C6 - that means that its speed grade is 6 . right?

Thanks,

Fina.

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Hi,

yes that's right. Keep in mind that it is not an exact indication of the max speed of the FPGA.

Kind regards

GPK

Thanks a lot for your answers :) :) :)

how can i know device max speed?

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Thanks a lot for your answers :) :) :)

how can i know device max speed?

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Hi,

sorry, I was not exact enough in my post. The timing for e.g. PLL's, I/O, I/O standards could be used to decide which speed grade do you need for your application. What I mean in my first post is was that the internal clock speed depends on your design. When you look into the datasheet you find e.g. a number for the clocktree speed ( C8 402 MHz). This doesn't mean that your design could run at this speed.

Sorry for any confusion.

Kind regards

GPK