ATMEGA128-16MN Atmel, ATMEGA128-16MN Datasheet - Page 241
![MCU AVR 128KB FLASH 16MHZ 64QFN](/photos/12/13/121326/313-64-qfn_sml.jpg)
ATMEGA128-16MN
Manufacturer Part Number
ATMEGA128-16MN
Description
MCU AVR 128KB FLASH 16MHZ 64QFN
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA128-16MN
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
EBI/EMI, I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
53
Program Memory Size
128KB (64K x 16)
Program Memory Type
FLASH
Eeprom Size
4K x 8
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-MLF®, 64-QFN
Processor Series
ATMEGA128x
Core
AVR8
Data Bus Width
8 bit
Data Ram Size
4 KB
3rd Party Development Tools
EWAVR, EWAVR-BL
Development Tools By Supplier
ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT
For Use With
ATSTK600 - DEV KIT FOR AVR/AVR32ATSTK501 - ADAPTER KIT FOR 64PIN AVR MCUATSTK500 - PROGRAMMER AVR STARTER KIT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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ADC Conversion
Result
2467V–AVR–02/11
After the conversion is complete (ADIF is high), the conversion result can be found in the ADC
Result Registers (ADCL, ADCH).
For single ended conversion, the result is
where V
Table 97 on page 242
sents the selected reference voltage minus one LSB.
If differential channels are used, the result is
where V
GAIN the selected gain factor, and V
in two’s complement form, from 0x200 (-512d) through 0x1FF (+511d). Note that if the user
wants to perform a quick polarity check of the results, it is sufficient to read the MSB of the result
(ADC9 in ADCH). If this bit is one, the result is negative, and if this bit is zero, the result is posi-
tive.
Table 96
selected with a gain of GAIN and a reference voltage of V
Figure 119. Differential Measurement Range
Figure 119
- V
REF
IN
POS
/GAIN
shows the resulting output codes if the differential input channel pair (ADCn - ADCm) is
is the voltage on the selected input pin and V
is the voltage on the positive input pin, V
shows the decoding of the differential input range.
and
ADC
Table 98 on page
=
Output Code
(
----------------------------------------------------------------------- -
0x3FF
V
ADC
REF
POS
0x1FF
0x000
the selected voltage reference. The result is presented
–
0
=
V
0x200
NEG
V
--------------------------
243). 0x000 represents ground, and 0x3FF repre-
V
IN
REF
V
) GAIN 512
⋅
REF
⋅
1024
NEG
REF
⋅
REF
the voltage on the negative input pin,
the selected voltage reference (see
.
V
REF
ATmega128
/GAIN Differential Input
Voltage (Volts)
241
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