7.6.1.5 REF_SEL Register (Offset = 20h) [reset = 0h]
REF_SEL is shown in Figure 37 and described in Table 13.
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ADC reference selection register
Figure 37. REF_SEL Register
7 |
6 |
5 |
4 |
3 |
2 |
1 |
0 |
RESERVED |
INT_EXT |
R-0000000b |
R/W-0b |
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Table 13. REF_SEL Register Field Descriptions
Bit |
Field |
Type |
Reset |
Description |
7-1 |
RESERVED |
R |
0000000b |
|
0 |
INT_EXT |
R/W |
0b |
This bit selects ADC reference source.
0b = Device uses external reference for ADC conversion
1b = Device uses internal reference for ADC conversion
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