CKSEL=000
System Clock Source Control Register
| CKSEL | Clock Source Select 0 (others): Setting prohibited 0 (000): HOCO 1 (001): MOCO 2 (010): LOCO 3 (011): Main clock oscillator 4 (100): Sub-clock oscillator |
| Reserved | These bits are read as 00000. The write value should be 00000. |