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AT90PWM2 데이터시트(PDF) 251 Page - ATMEL Corporation

부품명 AT90PWM2
상세설명  High Performance, Low Power Atmel
PDF  365 Pages
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제조업체  ATMEL [ATMEL Corporation]
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AT90PWM2 데이터시트(HTML) 251 Page - ATMEL Corporation

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4317K–AVR–03/2013
AT90PWM2/3/2B/3B
21.8.4
ADC Result Data Registers – ADCH and ADCL
When an ADC conversion is complete, the conversion results are stored in these two result data
registers.
When the ADCL register is read, the two ADC result data registers can’t be updated until the
ADCH register has also been read.
Consequently, in 10-bit configuration, the ADCL register must be read first before the ADCH.
Nevertheless, to work easily with only 8-bit precision, there is the possibility to left adjust the
result thanks to the ADLAR bit in the ADCSRA register. Like this, it is sufficient to only read
ADCH to have the conversion result.
21.8.4.1
ADLAR = 0
21.8.4.2
ADLAR = 1
21.8.5
Digital Input Disable Register 0 – DIDR0
1
0
1
0
PSC2ASY Event(1)
10
11Reserved
11
00Reserved
11
01Reserved
11
10Reserved
11
11Reserved
1.
For trigger on any PSC event, if the PSC uses the PLL clock, the core must use PLL/4 clock
source.
Table 21-7.
ADC Auto Trigger Source Selection for amplified conversions
ADTS3
ADTS2
ADTS1
ADTS0
Description
Bit
7
654
3
2
1
0
-
-
-
-
-
-
ADC9
ADC8
ADCH
ADC7
ADC6
ADC5
ADC4
ADC3
ADC2
ADC1
ADC0
ADCL
Read/Write
R
R
R
R
RR
RR
R
R
R
R
RR
RR
Initial Value
0
0
0
0
0
0
0
0
0
000
0
0
0
0
Bit
7
654
3
2
1
0
ADC9
ADC8
ADC7
ADC6
ADC5
ADC4
ADC3
ADC2
ADCH
ADC1
ADC0
-
-
-
-
-
-
ADCL
Read/Write
R
R
R
R
RR
RR
R
R
R
R
RR
RR
Initial Value
0
0
0
0
0
0
0
0
0
000
0
0
0
0
Bit
76543210
ADC7D
ADC6D
ADC5D
ADC4D
ADC3D
ACMPM
ADC2D
ACMP2D
ADC1D
ADC0D
DIDR0
Read/Write
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Initial Value
00000000



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