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Employee
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Ultra low voltage IO pins support on 5SGXMA3K3F40C4

Can Stratix5 support low voltage IO at 0.55V ?

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Employee
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HI @LH12 

May i know you are using as input or output? 
If as input, what is the upstream device VOH min/max?
If as output, what is the downstream device VIH min/max?

Then, refer to Table17 of datasheet (https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/hb/stratix-v/stx5_53001.pdf...

Check for an IO standard that best meet your requirement.

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