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[Precautions when using A-D converter]
1. Write to the following bits and registers before a trigger occurs (while the A-D converter stops operation).
• A-D control register 0 (except bit 6)
• A-D control register 1
2. When an external trigger is selected, the AN
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because the AN
/
AD
7
the AN
pin is selected as the analog input pin, the A-D converter is operated and the A-D register 7
7
contains an undefined value.
3. Refer to "Appendix.8 Examples of noise immunity improvement" when using the A-D converter.
pin is not connected to the comparator. When an external trigger is selected and
TRG
7751 Group User's Manual
[Precautions when using A-D converter]
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/
pin cannot be used as the analog input pin. It is
AD
7
TRG
A-D CONVERTER
8–35
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