Datasheet

24.4.4. Analog Comparator 3 Control Register
Name: AC3CON
Offset: 0x97
Reset: 0x0
Property: R/W
Bit 7 6 5 4 3 2 1 0
AC3EN AC3IE AC3IS[1:0] AC3M[2:0]
Access
Reset 0 0 0 0 0 0 0
Bit 7 – AC3EN: Analog Comparator 3 Enable Bit
Value Description
1 Enable the Analog Comparator 3.
0 Disable the Analog Comparator 3.
Bit 6 – AC3IE: Analog Comparator 3 Interrupt Enable bit
Value Description
1 Enable the Analog Comparator 3 interrupt.
0 Disable the Analog Comparator 3 interrupt.
Bits 5:4 – AC3IS[1:0]: Analog Comparator 3 Interrupt Select bit
These two bits determine the sensitivity of the interrupt trigger.
Value Description
00 Comparator Interrupt on output toggle
01 Reserved
10 Comparator interrupt on output falling edge
11 Comparator interrupt on output rising edge
Bits 2:0 – AC3M[2:0]: Analog Comparator 3 Multiplexer register
These three bits determine the input of the negative input of the analog comparator.
Value Description
000 “VREF”/6.40
001 “VREF”/3.20
010 “VREF”/2.13
011 “VREF”/1.60
100 Bandgap (1.1V)
101 DAC result
110 Analog comparator negative input (ACMPM pin)
111 Reserved
Atmel ATmega16M1/32M1/64M1 [DATASHEET]
Atmel-8209F-ATmega16M1/32M1/64M1_Datasheet_Complete-10/2016
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