Each individual comparator must be configured by its respective Comparator Control register (COMPCTRLx) before that comparator is enabled. These settings cannot be changed while the comparator is enabled.
- Select the desired measurement mode with COMPCTRLx.SINGLE. See Starting a Comparison for more details.
- Select the desired hysteresis with
COMPCTRLx.HYSTEN and
COMPCTRLx.HYST. See Input Hysteresis for more details.
- Select the comparator speed versus power with COMPCTRLx.SPEED. See Propagation Delay vs. Power Consumption for more
details.
- Select the interrupt source with COMPCTRLx.INTSEL.
- Select the positive and negative input sources with the COMPCTRLx.MUXPOS and
COMPCTRLx.MUXNEG bits. See Selecting Comparator Inputs for more details.
- Select the filtering option with COMPCTRLx.FLEN.
- Select standby operation with Run in Standby bit (COMPCTRLx.RUNSTDBY).
The individual comparators are enabled by
writing a '1' to the Enable bit in the Comparator x Control registers (COMPCTRLx.ENABLE).
The individual comparators are disabled by writing a '0' to COMPCTRLx.ENABLE. Writing a '0'
to CTRLA.ENABLE will also disable all the comparators, but will not clear their
COMPCTRLx.ENABLE bits.