CHAPTER 11 A/D CONVERTER
User’s Manual U13850EJ4V0UM
348
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.
Figure 11-2. A/D Converter Mode Register 1 (ADM1) (1/2)
After reset: 00H
R/W
Address: FFFFF3C0H
<7>
<6>
5
4
3
2
1
<0>
ADM1
ADCS
TRG
FR2
FR1
FR0
EGA1
EGA0
ADPS
ADCS
A/D conversion control
0
Stops conversion
1
Enables conversion
TRG
Software start or hardware start selection
0
Software start
1
Hardware start
Содержание MPD703030A
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