Texas Instruments MSP430x1xx manual CACTL1, ComparatorA Control Register

Comparator_A Registers

CACTL1, Comparator_A Control Register 1

7 6 5 4

3 2 1 0

CAEX

CARSEL

CAREFx

CAON

CAIES

CAIE

CAIFG

rw−(0) rw−(0) rw−(0) rw−(0) rw−(0) rw−(0) rw−(0) rw−(0)

CAEX	Bit 7	Comparator_A exchange. This bit exchanges the comparator inputs and
		inverts the comparator output.
CARSEL	Bit 6	Comparator_A reference select. This bit selects which terminal the VCAREF
		is applied to.
		When CAEX = 0:
		0	VCAREF is applied to the + terminal
		1	VCAREF is applied to the – terminal
		When CAEX = 1:
		0	VCAREF is applied to the – terminal
		1	VCAREF is applied to the + terminal
CAREF	Bits	Comparator_A reference. These bits select the reference voltage VCAREF.
	5-4	00	Internal reference off. An external reference can be applied.
		01	0.25*VCC
		10	0.50*VCC
		11	Diode reference is selected
CAON	Bit 3	Comparator_A on. This bit turns on the comparator. When the comparator
		is off it consumes no current. The reference circuitry is enabled or disabled
		independently.
		0	Off
		1	On
CAIES	Bit 2	Comparator_A interrupt edge select
		0	Rising edge
		1	Falling edge
CAIE	Bit 1	Comparator_A interrupt enable
		0	Disabled
		1	Enabled
CAIFG	Bit 0	The Comparator_A interrupt flag
		0	No interrupt pending
		1	Interrupt pending

16-10Comparator_A