Datasheet

Bits 10:8 – MUXNEG[2:0] Negative Input Mux Selection
These bits select which input will be connected to the negative input of comparator n.
COMPCTRLn.MUXNEG can only be written while COMPCTRLn.ENABLE is zero.
These bits are not synchronized.
Value Name Description
0x0
PIN0 I/O pin 0
0x1
PIN1 I/O pin 1
0x2
PIN2 I/O pin 2
0x3
PIN3 I/O pin 3
0x4
GND Ground
0x5
VSCALE VDD scaler
0x6
BANDGAP Internal bandgap voltage
0x7
DAC DAC output
Bit 6 – RUNSTDBY Run in Standby
This bit controls the behavior of the comparator during standby sleep mode.
This bit is not synchronized
Value Description
0
The comparator is disabled during sleep.
1
The comparator continues to operate during sleep.
Bits 4:3 – INTSEL[1:0] Interrupt Selection
These bits select the condition for comparator n to generate an interrupt or event. COMPCTRLn.INTSEL
can be written only while COMPCTRLn.ENABLE is zero.
These bits are not synchronized.
Value Name Description
0x0
TOGGLE Interrupt on comparator output toggle
0x1
RISING Interrupt on comparator output rising
0x2
FALLING Interrupt on comparator output falling
0x3
EOC Interrupt on end of comparison (single-shot mode only)
Bit 2 – SINGLE Single-Shot Mode
This bit determines the operation of comparator n. COMPCTRLn.SINGLE can be written only while
COMPCTRLn.ENABLE is zero.
These bits are not synchronized.
Value Description
0
Comparator n operates in continuous measurement mode.
1
Comparator n operates in single-shot mode.
Bit 1 – ENABLE Enable
Writing a zero to this bit disables comparator n.
Writing a one to this bit enables comparator n.
Due to synchronization, there is delay from updating the register until the comparator is enabled/disabled.
The value written to COMPCTRLn.ENABLE will read back immediately after being written.
SYNCBUSY.COMPCTRLn is set. SYNCBUSY.COMPCTRLn is cleared when the peripheral is enabled/
disabled.
Writing a one to COMPCTRLn.ENABLE will prevent further changes to the other bits in COMPCTRLn.
These bits remain protected until COMPCTRLn.ENABLE is written to zero and the write is synchronized.
SAM D5x/E5x Family Data Sheet
AC – Analog Comparators
© 2019 Microchip Technology Inc.
Datasheet
DS60001507E-page 1668