ATA6613 ATMEL Corporation, ATA6613 Datasheet - Page 280
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ATA6613
Manufacturer Part Number
ATA6613
Description
Ata6613
Manufacturer
ATMEL Corporation
Datasheet
1.ATA6613.pdf
(362 pages)
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6.21.6.3
280
ATA6612/ATA6613
The ADC Data Register – ADCL and ADCH
ADLAR = 0
ADLAR = 1
When an ADC conversion is complete, the result is found in these two registers.
When ADCL is read, the ADC Data Register is not updated until ADCH is read. Consequently, if
the result is left adjusted and no more than 8-bit precision is required, it is sufficient to read
ADCH. Otherwise, ADCL must be read first, then ADCH.
The ADLAR bit in ADMUX, and the MUXn bits in ADMUX affect the way the result is read from
the registers. If ADLAR is set, the result is left adjusted. If ADLAR is cleared (default), the result
is right adjusted.
• ADC9:0: ADC Conversion Result
Initial Value
Initial Value
Read/Write
Read/Write
These bits represent the result from the conversion, as detailed in
on page
Bit
Bit
277.
ADC7
ADC9
ADC1
15
15
R
R
R
R
–
7
0
0
7
0
0
ADC6
ADC8
ADC0
14
14
R
R
R
R
–
6
0
0
6
0
0
ADC5
ADC7
13
13
R
R
R
R
–
5
0
0
–
5
0
0
ADC4
ADC6
12
12
R
R
R
R
–
4
0
0
–
4
0
0
ADC3
ADC5
11
11
R
R
R
R
–
3
0
0
–
3
0
0
ADC2
ADC4
10
10
R
R
R
R
–
2
0
0
–
2
0
0
ADC9
ADC1
ADC3
“ADC Conversion Result”
R
R
R
R
9
1
0
0
9
–
1
0
0
ADC8
ADC0
ADC2
R
R
R
R
8
0
0
0
8
–
0
0
0
9111C–AUTO–02/08
ADCH
ADCH
ADCL
ADCL
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