36.4.2.3 Comparator Output
The digital output from any comparator (COMPn-OUT) is ‘1’ when the
difference between the positive and the negative input voltage is positive, and
‘0’ otherwise. The result of the latest comparison is available in the
Comparator n State bit in the Status register (STATUS.COMPSTATEn).
The output of each comparator can be routed
to an I/O pin for use by external devices by writing a ‘1’ to the Output
Enable bit field in the Comparator n Comparator Control A register (COMP[n].COMPCTRLA.OUT).
When enabled, the output appears on the corresponding COMPn-OUT pin.
Note: Before using any I/O pins as
comparator output, they must be configured as digital outputs. Refer to I/O Lines
for details.