Calibrated Internal RC Oscillator Accuracy

Table 1. Calibration Accuracy of Internal RC Oscillator
  Frequency VCC Temperature Calibration Accuracy
Factory
 Calibration 8.0MHz 2.7V - 4.2V 0°C to +50°C ±2%
8.0MHz 1.8V - 5.5V 0°C to +70°C ±3.5%
8.0MHz 1.8V - 5.5V -40°C to +105°C ±5%
User
 Calibration

Fixed frequency within:
7.3 - 8.1MHz

Fixed voltage within:
1.8V - 5.5V

Fixed temperature within:
-40°C to +105°C

 ±1%
Parent topic: Clock Characteristics