16/20MHz Oscillator Calibration A
| Bit7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
| CAL20M[5:0] | |||||||
| Access | R/W | R/W | R/W | R/W | R/W | R/W | |
| Reset | x | x | x | x | x | x | |
Calibration
These bits change the frequency around the current center frequency of the OSC20M for fine tuning.
At Reset factory calibrated values are loaded based on FREQSEL bits in FUSE.OSCCFG.