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jAlter's avatar
jAlter
Icon for New Contributor rankNew Contributor
8 months ago

MAX 10. No 3.0 V Schmitt Trigger I/O standard

For some reason Max 10 doesn't support 3.0 V Schmitt Trigger I/O standard. Of course, using 3.3V I/O standard would work as well. But then Quartus would complain and would issue a fatal error if the...
Programmable Logic Device
FvM's avatar
FvM
Icon for Super Contributor rankSuper Contributor
8 months ago

Hi,

3.0 V input level is no problem with 2.5 V IO standard as there's no VCCIO clamp diode involved (unless explicitely enabled). Datasheet specifies recommended input voltage range -0.5..3.6 V independed of VCCIO. Vil and Vih depend of course on VCCIO, thus asymmetrical threshold can be a concern.

Regards
Frank