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ATmega644PA Datasheet(PDF) 256 Page - ATMEL Corporation

Part # ATmega644PA
Description  8-bit Microcontroller with 16/32/64/128K Bytes In-Sytem Programmable Flash
PDF  468 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

ATmega644PA Datasheet(HTML) 256 Page - ATMEL Corporation

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256
8152G–AVR–11/09
ATmega164PA/324PA/644PA/1284P
Figure 22-14. Differential Measurement Range
Table 22-2.
Correlation between Input Voltage and Output Codes
V
ADCn
Read code
Corresponding Decimal Value
V
ADCm + VREF/GAIN
0x1FF
511
VADCm + 0.999 VREF/GAIN
0x1FF
511
V
ADCm + 0.998 VREF/GAIN
0x1FE
510
...
...
...
VADCm + 0.001 VREF/GAIN
0x001
1
V
ADCm
0x000
0
V
ADCm - 0.001 VREF/GAIN
0x3FF
-1
...
...
...
V
ADCm - 0.999 VREF/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



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