32.5.1 Control A


Bit	7	6	5	4	3	2	1	0
	RUNSTDBY	OUTEN		POWER[1:0]		HYSMODE[1:0]		ENABLE
Access	R/W	R/W		R/W	R/W	R/W	R/W	R/W
Reset	0	0		0	0	0	0	0

Bit 7 – RUNSTDBY Run in Standby Mode

Writing this bit to ‘1’ allows the AC to continue operation in Standby sleep mode. Since the clock is stopped, interrupts and status flags are not updated.

Value	Description
0	In Standby sleep mode, the peripheral is halted
1	In Standby sleep mode, the peripheral continues operation

Bit 6 – OUTEN Output Pad Enable

Writing this bit to ‘1’ makes the OUT signal available on the pin.

Bits 4:3 – POWER[1:0] Power Profile

This setting controls the current through the comparator, which allows the AC to trade power consumption for the response time. Refer to the Electrical Characteristics section for power consumption and response time.


Value	Name	Description
`0x0`	PROFILE0	Power profile 0. Shortest response time and highest consumption.
`0x1`	PROFILE1	Power profile 1
`0x2`	PROFILE2	Power profile 2
`0x3`	PROFILE3	Power profile 3

Bits 2:1 – HYSMODE[1:0] Hysteresis Mode Select

Writing to this bit field selects the Hysteresis mode for the AC input. For details about typical values of hysteresis levels, refer to the Electrical Characteristics section.

Value	Name	Description
0x0	NONE	No hysteresis
0x1	SMALL	Small hysteresis
0x2	MEDIUM	Medium hysteresis
0x3	LARGE	Large hysteresis

Bit 0 – ENABLE Enable AC

Writing this bit to ‘1’ enables the AC.

Name:	CTRLA
Offset:	0x00
Reset:	0x00
Property:	-