38.2.2 GPIO Output Characteristics Figure 38-19. I/O Pin Output Voltage vs. Sink Current (VDD = 3.0V) Figure 38-20. I/O Pin Output Voltage vs. Sink Current (VDD = 5.0V) Figure 38-21. I/O Pin Output Voltage vs. Sink Current (T = 25°C) Figure 38-22. I/O Pin Output Voltage vs. Source Current (VDD = 3.0V) Figure 38-23. I/O Pin Output Voltage vs. Source Current (VDD = 5.0V) Figure 38-24. I/O Pin Output Voltage vs. Source Current (T = 25°C)