Sfr Definition 9.2. Ref0Cn: Reference Control (C8051F121/3/5/7) - Silicon Laboratories C8051F12 Series Manual

C8051F120/1/2/3/4/5/6/7 C8051F130/1/2/3

SFR Definition 9.2. REF0CN: Reference Control (C8051F121/3/5/7)

0
SFR Page:
0xD1
SFR Address:
R/W R/W
- -
Bit7 Bit6
Bits7–5: UNUSED. Read = 000b; Write = don't care.
Bit4: AD0VRS: ADC0 Voltage Reference Select.
0: ADC0 voltage reference from VREFA pin.
1: ADC0 voltage reference from DAC0 output.
Bit3: AD2VRS: ADC2 Voltage Reference Select.
0: ADC2 voltage reference from VREFA pin.
1: ADC2 voltage reference from AV+.
Bit2: TEMPE: Temperature Sensor Enable Bit.
0: Internal Temperature Sensor Off.
1: Internal Temperature Sensor On.
Bit1: BIASE: ADC/DAC Bias Generator Enable Bit. (Must be '1' if using ADC, DAC, or VREF).
0: Internal Bias Generator Off.
1: Internal Bias Generator On.
Bit0: REFBE: Internal Reference Buffer Enable Bit.
0: Internal Reference Buffer Off.
1: Internal Reference Buffer On. Internal voltage reference is driven on the VREF pin.
116
R/W R/W R/W
- AD0VRS AD2VRS
Bit5 Bit4 Bit3
Rev. 1.4
R/W R/W R/W
TEMPE BIASE REFBE
Bit2 Bit1 Bit0
Reset Value
00000000