ATMEGA2560-16AI Atmel, ATMEGA2560-16AI Datasheet - Page 276
ATMEGA2560-16AI
Manufacturer Part Number
ATMEGA2560-16AI
Description
IC AVR MCU 256K 16MHZ 100TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA2560-16AI
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
86
Program Memory Size
256KB (128K x 16)
Program Memory Type
FLASH
Eeprom Size
4K x 8
Ram Size
8K x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Data Converters
A/D 16x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
100-TQFP, 100-VQFP
For Use With
ATSTK600-TQFP100 - STK600 SOCKET/ADAPTER 100-TQFPATSTK503 - STARTER KIT AVR EXP MODULE 100P
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATMEGA2560-16AI
Manufacturer:
ATMEL
Quantity:
1 000
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Figure 25-1. Analog to Digital Converter Block Schematic
25.2
2549M–AVR–09/10
ADC[15:0]
BANDGAP (1.1V)
REFERENCE
REFERENCE
(1.1V/2.56V)
INTERNAL
AVCC
AREF
GND
8-BIT DATABUS
Operation
ADC[2:0]
ADC[10:8]
ADC MULTIPLEXER
SELECT (ADMUX)
The ADC converts an analog input voltage to a 10-bit digital value through successive approxi-
mation. The minimum value represents GND and the maximum value represents the voltage on
the AREF pin minus 1 LSB. Optionally, AVCC or an internal 1.1V or 2.56V reference voltage
may be connected to the AREF pin by writing to the REFSn bits in the ADMUX Register. The
internal voltage reference may thus be decoupled by an external capacitor at the AREF pin to
improve noise immunity.
The analog input channel is selected by writing to the MUX bits in ADMUX and ADCSRB. Any of
the ADC input pins, as well as GND and a fixed bandgap voltage reference, can be selected as
single ended inputs to the ADC. A selection of ADC input pins can be selected as positive and
negative inputs to the differential amplifier.
MUX DECODER
+
-
REGISTER B (ADCSRB)
ADC CTRL & STATUS
AMPLIFIE R
GAIN
ATmega640/1280/1281/2560/2561
10-bit DAC
REGISTER A (ADCSRA)
ADC CTRL & STATUS
ADC CONVERSION
COMPLETE IRQ
PRESCALER
CONVERSION LOGIC
+
-
ADTS[2:0]
START
TRIGGER
SELECT
SAMPLE & HOLD
INTERRUPT
COMPARATOR
ADC
MULTIPLEXER
OUTPUT
FLAGS
15
ADC DATA REGISTER
(ADCH/ADCL)
0
276
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