Pin Pull-Up

Figure 1. ATmega48PB/88PB: I/O Pin Pull-up Resistor Current vs. Input Voltage (VCC = 1.8V)
Figure 2. ATmega48PB/88PB: I/O Pin Pull-up Resistor Current vs. Input Voltage (VCC = 2.7V)
Figure 3. ATmega48PB/88PB: I/O Pin Pull-up Resistor Current vs. Input Voltage (VCC = 5V)
Figure 4. ATmega48PB/88PB: Reset Pull-up Resistor Current vs. Reset Pin Voltage
(VCC = 1.8V)
Figure 5. ATmega48PB/88PB: Reset Pull-up Resistor Current vs. Reset Pin Voltage
(VCC = 2.7V)
Figure 6. ATmega48PB/88PB: Reset Pull-up Resistor Current vs. Reset Pin Voltage (VCC = 5V)