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Yes_Burundi's avatar
Yes_Burundi
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2 years ago

USB Blaster, Flex 10KE, EPC2 & JTAG voltage

How should one interpret this document*1 (see attached picture) and it's voltage requirements? As far as I know, all of the 10KE series pins are 5V tolerant, including JTAG pins, and EPC2 can also w...
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Yes_Burundi's avatar
Yes_Burundi
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2 years ago

Answering to my own question, but I think the answer can be deduced from the datasheets.

EPC2 VIH minimum is 2.0V, so it could theoretically be running at 3.3V and a 2.5V JTAG should work with it.

But since the EPF10K datasheet says that all pins are 5V tolerant, and therefore, EPC2 and JTAG can both run at 5V, and the EPF10K will be fine with that.