38.7 OSC20M Characteristics Figure 38-64. OSC20M Internal Oscillator: Calibration Stepsize vs. Calibration Value (VDD = 3V) Figure 38-65. OSC20M Internal Oscillator: Frequency vs. Calibration Value (VDD = 3V) Figure 38-66. OSC20M Internal Oscillator: Frequency vs. Temperature Figure 38-67. OSC20M Internal Oscillator: Frequency vs. VDD