C8051F80X_14 Datasheet, PDF (62/251 Pages) Silicon Laboratories – Mixed Signal ISP Flash MCU Family

C8051F80x-83x
SFR Definition 10.1. REF0CN: Voltage Reference Control
Bit
7
Name
Type
R
Reset
0
6
5
4
3
2
1
0
REFGND
REFSL
TEMPE BIASE
R
R/W
R/W
R/W
R/W
R/W
R
0
0
1
0
0
0
0
SFR Address = 0xD1
Bit Name
Function
7:6 Unused Read = 00b; Write = Don’t Care.
5 REFGND Analog Ground Reference.
Selects the ADC0 ground reference.
0: The ADC0 ground reference is the GND pin.
1: The ADC0 ground reference is the P0.1/AGND pin.
4:3 REFSL Voltage Reference Select.
Selects the ADC0 voltage reference.
00: The ADC0 voltage reference is the P0.0/VREF pin.
01: The ADC0 voltage reference is the VDD pin.
10: The ADC0 voltage reference is the internal 1.8 V digital supply voltage.
11: The ADC0 voltage reference is the internal 1.65 V high speed voltage reference.
2 TEMPE Temperature Sensor Enable.
Enables/Disables the internal temperature sensor.
0: Temperature Sensor Disabled.
1: Temperature Sensor Enabled.
1
BIASE Internal Analog Bias Generator Enable Bit.
0: Internal Bias Generator off.
1: Internal Bias Generator on.
0 Unused Read = 0b; Write = Don’t Care.
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Rev. 1.0