ATMEGA2561-16AU Atmel, ATMEGA2561-16AU Datasheet - Page 5

• Manufacturer Part Number: ATMEGA2561-16AU
• Description: IC AVR MCU 256K 16MHZ 64TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA2561-16AU

• 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: 54
• 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 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-TQFP, 64-VQFP
• Processor Series: ATMEGA256x
• Core: AVR8
• Data Bus Width: 8 bit
• Data Ram Size: 8 KB
• Interface Type: 2-Wire, SPI, USART
• Maximum Clock Frequency: 16 MHz
• Number Of Programmable I/os: 54
• Number Of Timers: 6
• Operating Supply Voltage: 2.7 V to 5.5 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: EWAVR, EWAVR-BL
• Development Tools By Supplier: ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT, ATAVRRZ541, ATAVRRAVEN, ATAVRRZUSBSTICK, ATAVRRZ201
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 8 Channel
• Package: 64TQFP
• Device Core: AVR
• Family Name: ATmega
• Maximum Speed: 16 MHz
• For Use With: ATSTK600-TQFP64 - STK600 SOCKET/ADAPTER 64-TQFP770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAG770-1005 - ISP 4PORT FOR ATMEL AVR MCU JTAG770-1004 - ISP 4PORT FOR ATMEL AVR MCU SPIATAVRISP2 - PROGRAMMER AVR IN SYSTEM
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

2. Overview
2.1
Figure 2-1.
2549MS–AVR–09/10
PG5..0
PC7..0
P A7..0
RESET
XTAL1
XTAL2
Block Diagram
VCC
GND
Block Diagram
NOTE:
Shaded parts only available
in the 100-pin version.
Complete functionality for
the ADC, T/C4, and T/C5 only
available in the 100-pin version.
POR / BOD &
Supervision
Generation
PORT A (8)
PORT G (6)
PORT C (8)
Watchdog
Watchdog
Oscillator
Oscillator
Circuits /
Power
RESET
Timer
Clock
The ATmega640/1280/1281/2560/2561 is a low-power CMOS 8-bit microcontroller based on the
AVR enhanced RISC architecture. By executing powerful instructions in a single clock cycle, the
ATmega640/1280/1281/2560/2561 achieves throughputs approaching 1 MIPS per MHz allowing
the system designer to optimize power consumption versus processing speed.
PORT F (8)
PORT D (8)
PF7..0
EEPROM
XRAM
PD7..0
JTAG
TWI
FLASH
SPI
PORT K (8)
PORT B (8)
ATmega640/1280/1281/2560/2561
PK7..0
PB7..0
Bandgap reference
Converter
Internal
A/D
CPU
8 bit T/C 0
SRAM
PORT J (8)
PORT H (8)
PH7..0
P J7..0
Comparator
Analog
16 bit T/C 1
16 bit T/C 3
16 bit T/C 5
16 bit T/C 4
8 bit T/C 2
PORT E (8)
PE7..0
PORT L (8)
PL7..0
USART 0
USART 1
USART 3
USART 2
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