Specification	ATMEGA2561-16MI

A/D Channels	8 count
A/D Resolution (bits)	10 bit
Connectivity	EMI, UART, I2C, USART, EBI, SPI
Core Processor	AVR
Core Size (Bit Width)	8 Bit
EEPROM Size (Depth)	4 K
EEPROM Size (Width)	8 bit
Mounting Type	Surface Mount
Number of I/O	54
Operating Temperature (Max)	85 °C
Operating Temperature (Min)	-40 °C
Oscillator Type	Internal
Package / Case	64-VFQFN Exposed Pad
Package Length	9 mm
Package Name	64-QFN
Package Width	9 mm
Peripherals	WDT, PWM, Brown-out Detect, POR, Reset
Program Memory Depth	128 K
Program Memory Size	256 KB
Program Memory Type	FLASH
Program Memory Width	16
RAM Size Depth	8 K
RAM Size Width	8 bit
Speed	16 MHz
Voltage - Supply (Vcc/Vdd) Maximum	5.5 V
Voltage - Supply (Vcc/Vdd) Minimum	4.5 V

ATMEGA2561 Series

Part	Peripherals	Package Width	Package Name	Package Length	Speed	A/D Channels	A/D Resolution (bits)	Core Processor	Operating Temperature (Max)	Operating Temperature (Min)	Package / Case	Number of I/O	Core Size (Bit Width)	Program Memory Depth	Program Memory Size	Program Memory Width	Voltage - Supply (Vcc/Vdd) Minimum	Voltage - Supply (Vcc/Vdd) Maximum	Program Memory Type	Connectivity	EEPROM Size (Width)	EEPROM Size (Depth)	RAM Size Width	RAM Size Depth	Mounting Type	Oscillator Type	Voltage - Supply (Maximum)	Voltage - Supply (Minimum)	Memory Type	Memory Size (Flash)	Frequency (Max)	Frequency (Min)	Data Rate (Max)	Power - Output	Current - Receiving (Max)	Current - Receiving (Min)	Current - Transmitting (Min)	Current - Transmitting (Max)	Sensitivity	Protocol	Serial Interfaces	Type	RF Family/Standard	GPIO Count	Modulation
Microchip Technology ATMEGA2561V-8AU	Brown-out Detect POR PWM Reset WDT	14 mm	64-TQFP	14 mm	8 MHz	8 count	10 bit	AVR	85 °C	-40 °C	64-TQFP	54	8 Bit	128 K	256 KB	16	1.8 V	5.5 V	FLASH	EBI EMI I2C SPI UART USART	8 bit	4 K	8 bit	8 K	Surface Mount	Internal
Microchip Technology ATMEGA2561V-8MUR	Brown-out Detect POR PWM Reset WDT	9 mm	64-QFN	9 mm	8 MHz	8 count	10 bit	AVR	85 °C	-40 °C	64-VFQFN Exposed Pad	54	8 Bit	128 K	256 KB	16	1.8 V	5.5 V	FLASH	EBI EMI I2C SPI UART USART	8 bit	4 K	8 bit	8 K	Surface Mount	Internal
Microchip Technology ATMEGA2561-16AUR	Brown-out Detect POR PWM Reset WDT	14 mm	64-TQFP	14 mm	16 MHz	8 count	10 bit	AVR	85 °C	-40 °C	64-TQFP	54	8 Bit	128 K	256 KB	16	4.5 V	5.5 V	FLASH	EBI EMI I2C SPI UART USART	8 bit	4 K	8 bit	8 K	Surface Mount	Internal
Microchip Technology ATMEGA2561V-8AI	Brown-out Detect POR PWM Reset WDT	14 mm	64-TQFP	14 mm	8 MHz	8 count	10 bit	AVR	85 °C	-40 °C	64-TQFP	54	8 Bit	128 K	256 KB	16	1.8 V	5.5 V	FLASH	EBI EMI I2C SPI UART USART	8 bit	4 K	8 bit	8 K	Surface Mount	Internal
Microchip Technology ATMEGA2561-16MU	Brown-out Detect POR PWM Reset WDT	9 mm	64-QFN	9 mm	16 MHz	8 count	10 bit	AVR	85 °C	-40 °C	64-VFQFN Exposed Pad	54	8 Bit	128 K	256 KB	16	4.5 V	5.5 V	FLASH	EBI EMI I2C SPI UART USART	8 bit	4 K	8 bit	8 K	Surface Mount	Internal
Microchip Technology ATMEGA2561-16MUR	Brown-out Detect POR PWM Reset WDT	9 mm	64-QFN	9 mm	16 MHz	8 count	10 bit	AVR	85 °C	-40 °C	64-VFQFN Exposed Pad	54	8 Bit	128 K	256 KB	16	4.5 V	5.5 V	FLASH	EBI EMI I2C SPI UART USART	8 bit	4 K	8 bit	8 K	Surface Mount	Internal
Microchip Technology ATMEGA2561-16AI	Brown-out Detect POR PWM Reset WDT	14 mm	64-TQFP	14 mm	16 MHz	8 count	10 bit	AVR	85 °C	-40 °C	64-TQFP	54	8 Bit	128 K	256 KB	16	4.5 V	5.5 V	FLASH	EBI EMI I2C SPI UART USART	8 bit	4 K	8 bit	8 K	Surface Mount	Internal
Microchip Technology ATMEGA2561R212-MU		9 mm	64-QFN	9 mm					85 °C	-40 °C	64-VFQFN Exposed Pad														Surface Mount		3.6 V	1.8 V	EEPROM Flash RAM	256 KB	935 MHz	769 MHz	1000 kBaud	10 dBm	9.2 mA	8.7 mA	13 mA	25 mA	-110 dBm	6LoWPAN Zigbee®	SPI	TxRx + MCU	802.15.4 General ISM < 1GHz	54	BPSK DSSS O-QPSK
Microchip Technology ATMEGA2561V-8MI	Brown-out Detect POR PWM Reset WDT	9 mm	64-QFN	9 mm	8 MHz	8 count	10 bit	AVR	85 °C	-40 °C	64-VFQFN Exposed Pad	54	8 Bit	128 K	256 KB	16	1.8 V	5.5 V	FLASH	EBI EMI I2C SPI UART USART	8 bit	4 K	8 bit	8 K	Surface Mount	Internal
Microchip Technology ATMEGA2561-16MI	Brown-out Detect POR PWM Reset WDT	9 mm	64-QFN	9 mm	16 MHz	8 count	10 bit	AVR	85 °C	-40 °C	64-VFQFN Exposed Pad	54	8 Bit	128 K	256 KB	16	4.5 V	5.5 V	FLASH	EBI EMI I2C SPI UART USART	8 bit	4 K	8 bit	8 K	Surface Mount	Internal

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ATMEGA2561-16MI | Datasheet