Category: Specifications
Tools: Quartus® Prime / Quartus II
Device: MAX®V


MAX V devices support Schmitt trigger functionality.
It can be set to an I/O pin that satisfies the following conditions.

• 3.3V or 2.5V I/O Standard
• input or bidirectional pin

To set Schmitt triggers, launch the Pin Planner by Quartus Prime / Quartus II Assignments menu ⇒ Pin Planner and set the I/O Standard of the corresponding pin to 3.3V Schmitt Trigger Input, 2.5V Schmitt Trigger Input. Please compile.
(If the process above Analysis & Elaboration is executed, the pins will be displayed in the Pin Planner, making it easier to set the I/O Standard.)

After compiling, please confirm that the I/O Standard of the corresponding pin is 3.3V Schmitt Trigger Input, 2.5V Schmitt Trigger Input in the compilation report.