The ADC conversion result can be supplied in two formats: Left justified or right justified. The FM bit controls the output format as shown in the figure below.
Figure 1. 10-Bit ADC Conversion Result
Format
Important: Writes to the ADRES register
pair are always right justified, regardless of the selected format mode. Therefore, a
data read after writing to ADRES when FM =
0 will be shifted left five places.