38.2.1 GPIO Input Characteristics

Figure 38-15. I/O Pin Input Hysteresis vs. VDD
Figure 38-16. I/O Pin Input Threshold Voltage vs. VDD (T = 25°C)
Figure 38-17. I/O Pin Input Threshold Voltage vs. VDD (VIH)
Figure 38-18. I/O Pin Input Threshold Voltage vs. VDD (VIL)