OSC20 Temperature Calibration Byte

  0x1B 8 - [Factory oscillator temperature calibration value]    

OSC20 Temperature Calibration Byte

Bit  7 6 5 4 3 2 1 0  
Access          R R R R  
Reset          x x x x  

Bits 3:0 – OSCCAL20MTCAL[3:0]: OSC20 Temperature Calibration

OSC20 Temperature Calibration

These bits contain factory temperature calibration values for the internal 20 MHz oscillator. If the OSCCFG fuse is configured to run the device at 20 MHz, this byte is automatically written into the OSC20MCALIBB register during Reset to ensure correct frequency of the calibrated RC Oscillator.