Pin Driver Strength

Figure 1. I/O Pin Output Voltage vs. Source Current (V_CC = 5V)

Figure 2. I/O Pin Output Voltage vs. Source Current (V_CC = 3V)

Figure 3. I/O Pin Output Voltage vs. Sink Current (V_CC = 5V)

Figure 4. I/O Pin Output Voltage vs. Sink Current (V_CC = 3V)