NEC uPD78P078 - Manual (Page 301)

301
CHAPTER 15 A/D CONVERTER
Figure 15-5. 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 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.
SAR
ADCR
INTAD
A/D
Converter
Operation
Sampling
Time
Sampling A / D Conversion
Conversion
Time
Undefined 80H
C0H
or
40H
Conversion
Result
Conversion
Result