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258
8272E–AVR–04/2013
ATmega164A/PA/324A/PA/644A/PA/1284/P
Figure 23-14. Differential measurement range.
Table 23-2.
Correlation between input voltage and output codes.
V
ADCn
Read code
Corresponding decimal value
V
ADCm + VREF/GAIN
0x1FF
511
VADCm + 0.999VREF/GAIN
0x1FF
511
V
ADCm + 0.998VREF/GAIN
0x1FE
510
...
VADCm + 0.001VREF/GAIN
0x001
1
V
ADCm
0x000
0
V
ADCm - 0.001VREF/GAIN
0x3FF
-1
...
V
ADCm - 0.999VREF/GAIN
0x201
-511
V
ADCm - VREF/GAIN
0x200
-512
0
Output Code
0x1FF
0x000
V
REF/GAIN
Differential Input
Voltage (Volts)
0x3FF
0x200
- V
REF/GAIN