ATMEGA2560R231-AU Atmel, ATMEGA2560R231-AU Datasheet - Page 276
ATMEGA2560R231-AU
Manufacturer Part Number
ATMEGA2560R231-AU
Description
BUNDLE ATMEGA2560/RF231 TQFP
Manufacturer
Atmel
Datasheet
1.ATMEGA640V-8CU.pdf
(444 pages)
Specifications of ATMEGA2560R231-AU
Frequency
2.4GHz
Modulation Or Protocol
802.15.4 Zigbee, 6LoWPAN, RF4CE, SP100, WirelessHART™, ISM
Data Interface
PCB, Surface Mount
Memory Size
256kB Flash, 4kB EEPROM, 8kB RAM
Antenna Connector
PCB, Surface Mount
Package / Case
100-TFBGA
Processor Series
ATMEGA256x
Core
AVR8
Data Bus Width
8 bit
Program Memory Type
Flash
Program Memory Size
256 KB
Data Ram Size
8 KB
Development Tools By Supplier
ATAVRRZ541, ATAVRRAVEN, ATAVRRZRAVEN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Voltage - Supply
-
Power - Output
-
Operating Temperature
-
Applications
-
Sensitivity
-
Data Rate - Maximum
-
Current - Transmitting
-
Current - Receiving
-
Lead Free Status / Rohs Status
Details
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- Download datasheet (10Mb)
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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