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CHAPTER 12 A/D CONVERTER
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User’s Manual U15109EJ3V0UD
Figure 12-2. Basic Operation of A/D Converter
SAR
ADCR
INTAD
Conversion time
Sampling time
Sampling
Operation of
A/D converter
A/D conversion
Undefined
Conversion
result
Conversion
result
A/D conversion is successively executed until bit 7 (ADCS) of A/D converter mode register 1 (ADM1) is reset (0)
by software.
If ADM1 and the analog input channel specification register (ADS) are written during A/D conversion, the
conversion is initialized. If ADCS is set (1) at this time, conversion is started from the beginning.
RESET input sets the A/D conversion result register (ADCR) to 0000H.