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CHAPTER 13 A/D CONVERTER
(2) Analog input channel specification register (ADS1)
This register specifies the analog voltage input port for A/D conversion.
ADS1 is set with an 8-bit memory manipulation instruction.
RESET input clears ADS1 to 00H.
Figure 13-4. Analog Input Channel Specification Register (ADS1) Format
Address: FF81H After Reset: 00H R/W
Symbol
7
6
5
4
3
2
1
0
ADS1
0
0
0
0
0
ADS12
ADS11
ADS10
ADS12
ADS11
ADS10
Analog Input Channel Specification
0
0
0
ANI0
0
0
1
ANI1
0
1
0
ANI2
0
1
1
ANI3
1
0
0
ANI4
Other than above
Setting prohibited
Caution
Bits 3 to 7 must be set to 0.
Summary of Contents for mPD780973 Series
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