Datasheet

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
+ V
REF
/GAIN 0x1FF 511
V
ADCm
+ 0.999V
REF
/GAIN 0x1FF 511
V
ADCm
+ 0.998V
REF
/GAIN 0x1FE 510
... ... ...
V
ADCm
+ 0.001V
REF
/GAIN 0x001 1
V
ADCm
0x000 0
V
ADCm
- 0.001V
REF
/GAIN 0x3FF -1
... ... ...
V
ADCm
- 0.999V
REF
/GAIN 0x201 -511
V
ADCm
- V
REF
/GAIN 0x200 -512
0
Output Code
0x1FF
0x000
V
REF
/GAIN
Differential Input
Voltage (Volts)
0x3FF
0x200
- V
REF
/GAIN