AT90PWM216-16SE ATMEL [ATMEL Corporation], AT90PWM216-16SE Datasheet - Page 253

• Manufacturer Part Number: AT90PWM216-16SE
• Description: 8-bit Microcontroller with 16K Bytes In-System Programmable flash
• Manufacturer: ATMEL [ATMEL Corporation]

21.8.4
21.8.4.1
7710D–AVR–08/09
ADC Result Data Registers – ADCH and ADCL
ADLAR = 0
Table 21-6.
1.
.
Table 21-7.
1.
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.
Bit
Read/Write
Initial Value
ADTS3
1
1
1
1
1
1
ADTS3
0
1
1
1
For trigger on any PSC event, if the PSC uses the PLL clock, the core must use PLL/4 clock
source
For trigger on any PSC event, if the PSC uses the PLL clock, the core must use PLL/4 clock
source
ADC Auto Trigger Source Selection for non amplified conversions
ADC Auto Trigger Source Selection for amplified conversions
ADTS2
0
0
1
1
1
1
ADTS2
0
0
0
0
ADC7
R
R
7
0
0
-
ADC6
R
R
6
0
0
-
ADTS1
1
1
0
0
1
1
ADTS1
0
0
0
1
ADC5
R
R
5
0
0
-
ADC4
ADTS0
0
1
0
1
0
1
ADTS0
0
0
1
0
R
R
4
0
0
-
ADC3
R
R
3
0
0
-
Description
PSC2ASY Event
Analog comparator 1
Analog comparator 2
Reserved
Reserved
Reserved
Description
Free Running Mode
PSC0ASY Event
PSC1ASY Event
PSC2ASY Event
ADC2
AT90PWM216/316
R
R
2
0
0
-
ADC9
ADC1
R
R
1
0
0
(1)
ADC8
ADC0
R
R
0
0
0
ADCH
ADCL
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