34.2.2 GPIO Output Characteristics Figure 34-26. I/O Pin Output Voltage vs. Sink Current (VDD = 1.8V) Figure 34-27. I/O Pin Output Voltage vs. Sink Current (VDD = 3.0V) Figure 34-28. I/O Pin Output Voltage vs. Sink Current (VDD = 5.0V) Figure 34-29. I/O Pin Output Voltage vs. Sink Current (T = 25°C) Figure 34-30. I/O Pin Output Voltage vs. Source Current (VDD = 1.8V) Figure 34-31. I/O Pin Output Voltage vs. Source Current (VDD = 3.0V) Figure 34-32. I/O Pin Output Voltage vs. Source Current (VDD = 5.0V) Figure 34-33. I/O Pin Output Voltage vs. Source Current (T = 25°C)