upd78f0124hgba1-8et-a Renesas Electronics Corporation., upd78f0124hgba1-8et-a Datasheet - Page 231

• Manufacturer Part Number: upd78f0124hgba1-8et-a
• Description: 8-bit Single-chip Microcontrollers
• Manufacturer: Renesas Electronics Corporation.

(2) Analog input channel specification register (ADS)
Cautions 1. Be sure to clear bits 3 to 7 of ADS to 0.
This register specifies the input port of the analog voltage to be A/D converted.
ADS can be set by a 1-bit or 8-bit memory manipulation instruction.
RESET input clears this register to 00H.
2. If data is written to ADS, a wait cycle is generated. Do not write data to ADS when the CPU is
operating on the subsystem clock and the high-speed system clock is stopped. For details,
see CHAPTER 31 CAUTIONS FOR WAIT.
Figure 12-5. Format of Analog Input Channel Specification Register (ADS)
Symbol
Address: FF29H
ADS
ADS2
0
0
0
0
0
1
1
1
1
7
After reset: 00H
ADS1
0
0
0
1
1
0
0
1
1
6
CHAPTER 12 A/D CONVERTER
User’s Manual U16962EJ3V0UD
ADS0
5
0
0
1
0
1
0
1
0
1
ANI0
ANI1
ANI2
ANI3
ANI4
ANI5
ANI6
ANI7
R/W
0
4
Analog input channel specification
0
3
ADS2
2
ADS1
1
ADS0
0
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