35.1.9 Pin Threshold and Hysteresis Figure 35-25. ATmega48PB/88PB: I/O Pin Input Threshold Voltage vs. VCC (VIH, I/O Pin read as ‘1’) Figure 35-26. ATmega48PB/88PB: I/O Pin Input Threshold Voltage vs. VCC (VIL, I/O Pin read as ‘0’) Figure 35-27. ATmega48PB/88PB: I/O Pin Input Hysteresis vs. VCC Figure 35-28. ATmega48PB/88PB: Reset Input Threshold Voltage vs. VCC (VIH, I/O Pin read as ‘1’) Figure 35-29. ATmega48PB/88PB: Reset Input Threshold Voltage vs. VCC (VIL, I/O Pin read as ‘0’) Figure 35-30. ATmega48PB/88PB: Reset Pin Input Hysteresis vs. VCC