35.1.11 Internal Oscillator Speed

Figure 35-36. ATmega48PB_88PB: Watchdog Oscillator Frequency vs. Temperature
Figure 35-37. ATmega48PB_88PB: Watchdog Oscillator Frequency vs. VCC
Figure 35-38. ATmega48PB_88PB: Calibrated 8MHz RC Oscillator Frequency vs. VCC
Figure 35-39. ATmega48PB_88PB: Calibrated 8MHz RC Oscillator Frequency vs. Temperature
Figure 35-40. ATmega48PB_88PB: Calibrated 8MHz RC Oscillator Frequency vs. OSCCAL Value