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Altera_Forum
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16 years ago

The MSEL pins are powered by VCCINT

1)I am using EP3C25E144,it has MSEL[2..0],from tha datasheet see that "The MSEL pins are powered by VCCINT",but when I design the PCB ,i only saw that keep them '101' is Fast Active Serial Fast (AS F...
Altera_Forum's avatar
Altera_Forum
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16 years ago

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but then i saw that the high level should be VCCINT (1.2V)

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Where do you see this in a datasheet?

The datasheet says "The MSEL pins are powered by VCCINT.", which in my understanding means, the input buffers are supplied by VCCINT.

I don't see a statement different from this suggestion:

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Altera recommends connecting the MSEL pins to VCCA or GND depending on the MSEL pin settings.

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