--------------------------------------
 Name     ! Default !   SET  ! MODE
--------------------------------------
CKSEL0    !    on   !   off  !\
CKSEL1    !   off   !   off  ! > - . 
CKSEL2    !    on   !   off  ! /
CKSEL3    !    on   !   off  !/
SUT0      !    on   !   off  !
SUT1      !   off   !   off  !
CKOUT     !   off   !   off  !
CKDIV8    !    on   !   off  !
RSTDISBL  !   off   !   off  !
BODLEVEL0 !   off   !    on  !\
BODLEVEL1 !   off   !    on  ! > - 4.3 V
BODLEVEL2 !   off   !   off  !/
WDTON     !   off   !   off  !
SPIEN     !    on   !    on  !
EESAVE    !   off   !   off  !
DWEN      !   off   !   off  !
SELFPRGEN !   off   !   off  !
-------------------------------------
 on  off   
  , 
   SPIEN,    
   ,   
 .