| 摘要 |
An analog/digital converter has a register which stores data for selecting an analog voltage to be scanned from analog voltages of plural channels, another register which stores data for selecting an analog voltage to be temporarily scanned, and a counter which is set to count a predetermined number of scanning cycles of the analog voltages. In the converter, analog voltages of plural channels can adequately be scanned by a simple configuration, and, in the course of continuously conducting the scan operation, analog voltages of channels other than the currently scanned channels can temporarily be scanned, so that the analog voltages are converted into digital values.
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