CHAPTER 10 8-BIT A/D CONVERTER (µPD789426 AND 789446 SUBSERIES)
(2) Analog input channel specification register 0 (ADS0)
ADS0 specifies the port used to input the analog voltage to be converted to a digital signal.
ADS0 is set with a 1-bit or 8-bit memory manipulation instruction.
RESET input sets ADS0 to 00H.
Figure 10-3. Format of Analog Input Channel Specification Register 0
Symbol
ADS0
7
0
6
0
5
0
4
0
3
0
2
1
0
Address
FF84H
After reset
00H
R/W
R/W
ADS02
ADS01
ADS00
Analog input channel specification
ADS02
ADS01
ADS00
ANI0
ANI1
ANI2
ANI3
ANI4
ANI5
0
0
0
0
1
1
0
0
1
1
0
0
0
1
0
1
0
1
Other than above
Setting prohibited
Caution Bits 3 to 7 must be set to 0.
User’s Manual U15075EJ1V0UM00
187
NEC [ NEC ]
