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Altera_Forum's avatar
Altera_Forum
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15 years ago

Pin out comparision between EP3C16Q208 and EP3C40Q208

After I've checked the pinout of these 2 device,I found 3C40 use a lot of"VCCINT &GND"in stead of 3C16's "IO",could I design a compatible PCB layout(NC or OUT) for both 2?Any one have the experience on it?

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  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    15 years ago

    Yes, you can.

    You have to connect the power for the EP3C40 device and set the migration devices in Quartus II to EP3C16 and EP3C40. This implies that you only have the IO pins in the EP3C40 available for User I/O (Quartus II will only use those). You als may want to make sure that in Assignments->Device->Device and Pin Options->Unused Pins you select 'As input -tri-stated with weak pull-up'