SAM4L Datasheet, PDF (986/1185 Pages) ATMEL Corporation – ATSAM ARM-based Flash MCU

37.9.12 ACx Configuration Register
Name:
CONFx
Access Type:
Read/Write
Offset:
0xD0,0xD4,0xD8,0xDC,0xE0,0xE4,0xE8,0xEC
Reset Value:
0x00000000
ATSAM4L4/L2
31
30
29
28
27
26
25
24
-
-
-
-
ALWAYSON
FAST
HYS
23
22
21
20
19
18
17
16
-
-
-
-
-
-
EVENP
EVENN
15
14
13
12
11
10
-
-
-
-
-
-
9
8
INSELN
7
6
5
4
3
2
1
0
-
-
MODE
-
-
IS
• ALWAYSON: Always On
0: AC is disabled between measurements
1: AC is always enabled
• FAST: Fast Mode Enable
This bit controls whether the AC operates in fast or low-power mode, thus allowing a trade-off between its active power
dissipation and speed (i.e., startup time and propagation delay):
0: Low-power mode
1: Fast mode
Refer to Section 42. ”Electrical Characteristics” on page 1106 for details on the current consumption, start-up time, and
propagation delay of the AC when it is in either of these modes.
• HYS: Hysteresis Voltage Value.
HYS
0
0
0
1
1
0
1
1
Hysteresis value
Hysteresis voltage = 0 mV
Hysteresis voltage = 25 mV
Hysteresis voltage = 50 mV
Hysteresis voltage = 75 mV
• EVENN: Peripheral Event Enable Negative
0: Do not output peripheral event when ACOUT is zero.
1: Output peripheral event when ACOUT is zero.
• EVENP: Peripheral Event Enable Positive
0: Do not output peripheral event when ACOUT is one.
1: Output peripheral event when ACOUT is one.
• INSELN: Negative Input Select
See CONFx.INSELN: Negative Input Select table in Module Configuration section.
42023C–SAM–02/2013
986