NEC PD78058FY(A) - Manual (Page 270)

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CHAPTER 14 A/D CONVERTER
SAR
ADCR
INTAD
A/D Converter
Operation
Sampling Time
Sampling A /D Conversion
Conversion
Time
Undefined 80H
C0H
or
40H
Conversion
Result
Conversion
Result
Figure 14-5. A/D Converter Basic Operation
A/D conversion operations are performed continuously until bit 7 (CS) of ADM is reset (0) by software.
If a write to the ADM is performed during an A/D conversion operation, the conversion operation is initialized, and
if the CS bit is set (1), conversion starts again from the beginning.
After RESET input, the value of ADCR is undefined.