I've look at the MKL28Z datasheet and reference manual but I could not find a direct statement that says exactly what input voltage to GPIO will register a solid positive logic 1 to the MCU? I'm not sure if I should just take any googled generic voltage level for Vdd = 3.3V or can I?
For positive logic:
Is 0 - 0.5V = logic 0? >1.65 V = logic 1?
Thanks for the help.