ATMEGA2561V ATMEL [ATMEL Corporation], ATMEGA2561V Datasheet - Page 295
ATMEGA2561V
Manufacturer Part Number
ATMEGA2561V
Description
8-bit Microcontroller with 64K/128K/256K Bytes In-System Programmable Flash
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
1.ATMEGA2561V.pdf
(449 pages)
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ADCSRB – ADC Control and
Status Register B
2549K–AVR–01/07
• Bit 3 – MUX5: Analog Channel and Gain Selection Bit
This bit is used together with MUX4:0 in ADMUX to select which combination in of ana-
log inputs are connected to the ADC. See Table 129 for details. If this bit is changed
during a conversion, the change will not go in effect until this conversion is complete.
This bit is not valid for ATmega1281/2561.
Table 129. Input Channel Selections
Bit
(0x7B)
Read/Write
Initial Value
MUX5:0
000000
000001
000010
000011
000100
000101
000110
000111
001000
001001
001010
001011
001100
001101
001110
001111
010000
010001
010010
010011
010100
010101
010110
010111
011000
011001
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
Single Ended
Input
ADC0
ADC1
ADC2
ADC3
ADC4
ADC5
ADC6
ADC7
R
7
–
0
N/A
ACME
R/W
ATmega640/1280/1281/2560/2561
6
0
Positive Differential
Input
ADC0
ADC1
ADC0
ADC1
ADC2
ADC3
ADC2
ADC3
ADC0
ADC1
ADC2
ADC3
ADC4
ADC5
ADC6
ADC7
ADC0
ADC1
R
5
–
0
R
4
–
0
MUX5
R/W
3
0
Negative Differential
Input
ADC0
ADC0
ADC0
ADC0
ADC2
ADC2
ADC2
ADC2
ADC1
ADC1
ADC1
ADC1
ADC1
ADC1
ADC1
ADC1
ADC2
ADC2
ADTS2
R/W
N/A
2
0
ADTS1
R/W
1
0
ADTS0
R/W
0
0
Gain
10x
10x
200x
200x
10x
10x
200x
200x
1x
1x
1x
1x
1x
1x
1x
1x
1x
1x
ADCSRB
295
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