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ATtiny167-ESSZ датащи(PDF) 214 Page - ATMEL Corporation

номер детали ATtiny167-ESSZ
подробное описание детали  8-bit Microcontroller with 8K/16K Bytes In-System Programmable Flash and LIN Controller
PDF  282 Pages
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производитель  ATMEL [ATMEL Corporation]
домашняя страница  http://www.atmel.com
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ATtiny167-ESSZ датащи(HTML) 214 Page - ATMEL Corporation

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214
7728D–AVR–07/09
ATtiny87/ATtiny167
18.2.2
Analog Compare Negative Input
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
available 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 18-2.
Analog Comparator Positive Input
ACME
ADEN
MUX[4..0]
Analog Comparator Positive Input - Comment
0
x
x xxxx b
AIN1
ADC
Switched On
x
1
x xxxx
b
AIN1
1
0
0 0000 b
ADC0
ADC
Switched Off.
1
0
0 0001
b
ADC1
1
0
0 0010
b
ADC2
1
0
0 0011 b
ADC3 / ISRC
1
0
0 0100
b
ADC4
1
0
0 0101
b
ADC5
1
0
0 0110 b
ADC6
1
0
0 0111
b
ADC7
1
0
0 1000
b
ADC8
1
0
0 1001 b
ADC9
1
0
0 1010
b
ADC10
1
0
Other
This doesn’t make sense - Don’t use.
Table 18-3.
Analog Comparator Negative Input
ACIRS
ACIR[1..0]
REFS[1..0] Analog Comparator Negative Input - Comment
0x
x
AIN0
1x
0 0
b
0 1 b
1 0 b
Reserved
10 0 b
1 1 b
2.56 V - using Internal 2.56V Voltage Reference
10 1 b
1 1 b
1.28 V (1/2 of 2.56 V) - using Internal 2.56V Voltage Reference
11 0 b
1 1 b
0.64 V (1/4 of 2.56 V - using Internal 2.56V Voltage Reference
11 1 b
1 1 b
0.32 V (1/8 of 2.56 V) - using Internal 2.56V Voltage Reference



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