pub type CONF_W<'a, REG, const O: u8> = BitWriter<'a, REG, O, CONFSELECT_A>;
Field CONF writer - Battery Backup Configuration
CONF
struct CONF_W<'a, REG, const O: u8> { /* private fields */ }
The power switch is handled by the BOD33
In Backup Domain, the backup domain is always supplied by battery backup power