37.2.1 GPIO Input Characteristics

Figure 37-16. I/O Pin Input Hysteresis vs. VDD
Figure 37-17. I/O Pin Input Threshold Voltage vs. VDD (T = 25°C)
Figure 37-18. I/O Pin Input Threshold Voltage vs. VDD (VIH)
Figure 37-19. I/O Pin Input Threshold Voltage vs. VDD (VIL)