NEC mPD780852 Series Preliminary User's Manual page 158

(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 12-4. Analog Input Channel Specification Register (ADS1) Format
Address: FF81H After Reset: 00H R/W
Symbol 7
ADS1 0
ADS12
0
0
0
0
1
Other than above
Caution Bits 3 to 7 must be set to 0.
158
CHAPTER 12 A/D CONVERTER
6 5 4
0 0 0
ADS11 ADS10
0 0 ANI0
0 1 ANI1
1 0 ANI2
1 1 ANI3
0 0 ANI4
Setting prohibited
Preliminary User's Manual U14581EJ3V0UM00
3 2 1
0 ADS12 ADS11
Analog Input Channel Specification
0
ADS10