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CHAPTER 13 A/D CONVERTER
Figure 13-6. Basic Operation of 8-Bit A/D Converter
Conversion time
Sampling time
Sampling
A/D conversion
Undefined
80H
C0H
or
40H
Conversion
result
A/D converter
operation
SAR
ADCR1
INTAD
Conversion
result
A/D conversion operations are performed continuously until bit 7 (ADCS1) of the A/D converter mode register
(ADM1) is reset (to 0) by software.
If a write operation to the ADM1 and analog input channel specification register (ADS1) is performed during an
A/D conversion operation, the conversion operation is initialized, and if the ADCS1 bit is set (to 1), conversion starts
again from the beginning.
RESET input sets the A/D conversion result register (ADCR1) to 00H.
Содержание mPD780973 Series
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