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11.3 Control Registers
The A/D converter is controlled by the following registers.
•
A/D converter mode register 1 (ADM1)
•
Analog input channel specification register (ADS)
•
A/D converter mode register 2 (ADM2)
(1) A/D converter mode register 1 (ADM1)
This register specifies the conversion time of the input analog signal to be converted into a digital signal, starting
or stopping the conversion, and an external trigger.
ADM is set by a 1-bit or 8-bit memory manipulation instruction.
RESET input clears ADM1 to 00H.
After reset:
00H
<7>
ADM1
ADCS
ADCS
0
1
TRG
0
1
CHAPTER 11
R/W
Address: FFFFF3C0H
<6>
5
TRG
FR2
Conversion stopped
Conversion enabled
Software start or hardware start selection
Software start
Hardware start
User's Manual U13850EJ6V0UD
A/D CONVERTER
4
3
2
FR1
FR0
EGA1
A/D conversion control
(1/2)
1
<0>
EGA0
ADPS
435
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