Is this device safe to directly I/O with?

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Oh, that's a no go. I didn't look too closely, I thought it was a 3.3V part. If you connect 5V then the I/O lines will output closer to 5V, not 2.4V. 2.4C is just the minimum threshold to be considered a logic 1.

You want to acquire the 3.3V part, of course the Papilio Plus does have a SRAM chip already connected to it but we are only on prototypes right now. Still a couple months from production.


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