Remarks 1.

About 1 microsecond of stabilization time is required when changing the voltage converter from operation stopped to operation enabled status.
Consequently, about 1 micro second must be left free between the call to this API function and the call to R_ADC_Start.

Remarks 2.

On the [A/D Converter], in the [Comparator operation setting] area, if "Operation" is selected, then the voltage converter will be switched to "always on".
There is thus no need to call this API function in this case.

void    R_ADC_Set_OperationOn ( void );