CTRLA
Control A
0x00
8
PAC Write-Protection
0x00
Control A
CKSEL
Main Clock Select
Parent topic:
Register Description
Control A
Bit
7
6
5
4
3
2
1
0
CKSEL
Access
R/W
Reset
0
Bit 2 – CKSEL: Main Clock Select
Main Clock Select
Value
Description
0
The GCLKMAIN clock is selected for the main clock.
1
The DFLLULP clock is selected for the main clock.