I'm having difficulty finding information about the ATmega32U4 logic levels for the digital input ports.

I was wondering if I can hook up the 3.3v output of https://www.amazon.com/dp/B07KBWVJMP/ (HC-SR501 PIR Sensor Infrared IR Body Motion Module for Arduino Raspberry Pi) straight into the digital read ports.

I know this is possible on some chips, as they treat both 3.3v and 5v as logical highs, but I can't find the cut-offs listed for the Arduino Leonardo.


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