Enum avr_device::attiny85::adc::admux::REFS_A [−][src]
#[repr(u8)]
pub enum REFS_A {
VCC,
AREF,
INTERNAL,
INTERNAL_BYPASS,
}Expand description
Reference Selection Bits
Value on reset: 0
Variants
0: Vcc used as Voltage Reference, disconnected from Aref
1: External Voltage Reference at AREF pin, Internal Voltage Reference turned off
2: Internal Voltage Reference (1.1V when REFS2 is cleared, 2.56V when REFS2 is set) without external bypass
3: Internal 2.56V Voltage Reference with external bypass capacitor at AREF pin (REFS2 must be set)