ata6616 ATMEL Corporation, ata6616 Datasheet - Page 239

• Manufacturer Part Number: ata6616
• Description: Microcontroller With Lin Transceiver, 5v Regulator And Watchdog
• Manufacturer: ATMEL Corporation

4.19.2.2
9132A–AUTO–10/08
DRAFT
Analog Compare Negative Input
Table 4-62.
It is possible to select an internal voltage reference to replace the negative input to the Analog
Comparator. The output of a 2-bit DAC using the Internal Voltage Reference of the DAC is avail-
able when ACIRS bit of ACSR register is set. The voltage reference division factor is done by
ACIR[1..0] of ADCSRB register.
If ACIRS is cleared, AIN0 pin is applied to the negative input to the Analog Comparator.
Table 4-63.
ACIRS
ACME
0
1
1
1
1
1
0
1
1
1
1
1
1
1
1
1
1
1
1
x
ACIR[1..0]
0 0
0 1
1 0
1 1
Analog Comparator Positive Input
Analog Comparator Negative Input
x
x
b
b
b
b
ADEN
x
1
0
0
0
0
0
0
0
0
0
0
0
0
REFS[1..0] Analog Comparator Negative Input - Comment
0 1
1 1
1 1
1 1
1 1
x
MUX[4..0]
b
b
b
b
b
0 0000
0 0001
0 0010
0 0011
0 0100
0 0101
0 0110
0 0111
0 1000
0 1001
0 1010
x xxxx
x xxxx
Other
ATA6616/ATA6617 [Preliminary]
AIN0
1.1V - using Internal 1.1V Voltage Reference
2.56V - using Internal 2.56V Voltage Reference
1.28V (
0.64V (
0.32V (
b
b
b
b
b
b
b
b
b
b
b
b
b
1
1
1
Analog Comparator Positive Input - Comment
AIN1
AIN1
ADC0
ADC1
ADC2
ADC3 / ISRC
ADC4
ADC5
ADC6
ADC7
ADC8
ADC9
ADC10
This doesn’t make sense - Don’t use.
/
/
/
2
4
8
of 2.56 V) - using Internal 2.56V Voltage Reference
of 2.56 V - using Internal 2.56V Voltage Reference
of 2.56 V) - using Internal 2.56V Voltage Reference
ADC
ADC
Switched On
Switched Off.
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