2.3 ADC Clock Period
The time to complete a one-bit conversion is defined as the TAD and it is identical to 1/ADC Clock Frequency. TAD must be greater than 500 ns and less than 9 µs for the correct conversion.
Figure 2-1 illustrates the recommended combination of FOSC and Clock divider values. The colored area shows a violation, and the white area recommended combinations.
Examples included in the next section follow all the recommended settings.