37.7 OSC20M Characteristics Figure 37-55. OSC20M Internal Oscillator: Calibration Stepsize vs. Calibration Value (VDD = 3V) Figure 37-56. OSC20M Internal Oscillator: Frequency vs. Calibration Value (VDD = 3V) Figure 37-57. OSC20M Internal Oscillator: Frequency vs. Temperature Figure 37-58. OSC20M Internal Oscillator: Frequency vs. VDD