C8051F80x-83x
SFR Definition 10.1. REF0CN: Voltage Reference Control
Bit
7
6
5
4
3
2
1
0
REFGND
REFSL
TEMPE
BIASE
Name
Type
Reset
R
0
R
0
R/W
0
R/W
1
R/W
0
R/W
0
R/W
0
R
0
SFR Address = 0xD1
Bit
7:6
5
Name
Function
Unused Read = 00b; Write = Don’t Care.
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.
REFSL Voltage Reference Select.
4:3
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.
TEMPE Temperature Sensor Enable.
2
Enables/Disables the internal temperature sensor.
0: Temperature Sensor Disabled.
1: Temperature Sensor Enabled.
1
0
BIASE
Internal Analog Bias Generator Enable Bit.
0: Internal Bias Generator off.
1: Internal Bias Generator on.
Unused Read = 0b; Write = Don’t Care.
62
Rev. 1.0
SILICON [ SILICON ]
