![](http://datasheet.mmic.net.cn/30000/MR83C154CXXX-36P883_datasheet_2377430/MR83C154CXXX-36P883_147.png)
147
8006K–AVR–10/10
ATtiny24/44/84
For offset calibration purpose the offset of the certain differential channels can be measure by
selecting the same input for both negative and positive input. This calibration can be done for
level.
16.13.2
ADCSRA – ADC Control and Status Register A
Bit 7 – ADEN: ADC Enable
Writing this bit to one enables the ADC. By writing it to zero, the ADC is turned off. Turning the
ADC off while a conversion is in progress, will terminate this conversion.
ADC2 (PA2)
ADC1 (PA1)
101100
101101
ADC3 (PA3)
010000
010001
ADC3 (PA3)
ADC0 (PA0)
101010
101011
ADC1 (PA1)
101110
101111
ADC2 (PA2)
110000
110001
100100
100101
ADC4 (PA4
010010
010011
ADC5 (PA5)
010100
010101
ADC6 (PA6)
010110
010111
ADC7 (PA7)
011000
011001
ADC4 (PA4)
ADC3 (PA3)
110010
110011
ADC5 (PA5)
011010
011011
ADC5 (PA5)
ADC3 (PA3)
110100
110101
ADC4 (PA4)
111010
111011
ADC6 (PA6)
011100
011101
ADC6 (PA6)
ADC3 (PA3)
110110
110111
ADC5 (PA5)
111100
111101
ADC7 (PA7)
011110
011111
ADC7 (PA7)
ADC3 (PA3)
111000
111001
ADC6 (PA6)
111110
111111
100110
100111
1.
Table 16-5.
Differential Input channel Selections. (Continued)
Positive Differential Input
Negative Differential Input
MUX5:0
Gain 1x
Gain 20x
Bit
7654
321
0
ADEN
ADSC
ADATE
ADIF
ADIE
ADPS2
ADPS1
ADPS0
ADCSRA
Read/Write
R/W
Initial Value
0000
000
0