Integrated Circuits (ICs) > Embedded Processors and Controllers > Microcontrollers > ATMEGA2561-16AU

ATMEGA2561-16AU

Microchip

Part Number:	ATMEGA2561-16AU
Manufacturer:	Microchip
Part Type:	Integrated Circuits (ICs) > Embedded Processors and Controllers > Microcontrollers > ATMEGA2561-16AU
Qty Available:
Description:	MCU 8-bit AVR RISC 256KB Flash 5V 64-Pin TQFP Tray / IC MCU 8BIT 256KB FLASH 64TQFP

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04/24/2026 – There are 515 pieces pieces of Part Number ATMEGA2561-16AU Available.

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MCU 8-bit AVR RISC 256KB Flash 5V 64-Pin TQFP Tray / IC MCU 8BIT 256KB FLASH 64TQFP

Specifications

TYPE	DESCRIPTION
Case/Package	TQFP
Mount	Surface Mount
Number of Pins	64
Access Time	16 µs
Core Architecture	AVR
Data Bus Width	8 b
Density	2 Mb
Frequency	16 MHz
Interface	2-Wire, EBI/EMI, I2C, SPI, UART, USART
Max Frequency	16 MHz
Max Operating Temperature	85 °C
Max Supply Voltage	5.5 V
Memory Size	256 kB
Memory Type	FLASH
Min Operating Temperature	-40 °C
Min Supply Voltage	4.5 V
Number of ADC Channels	8
Number of Bits	8
Number of I2C Channels	1
Number of I/Os	54
Number of Inputs	54
Number of Outputs	54
Number of Programmable I/O	54
Number of PWM Channels	10
Number of SPI Channels	1
Number of Timers/Counters	6
Operating Supply Voltage	5 V
Oscillator Type	Internal
Peripherals	Brown-out Detect/Reset, POR, PWM, WDT
RAM Size	8 kB
Schedule B	8542310000
Watchdog Timer	Yes
Height	1.05 mm
Length	14.1 mm
Width	14.1 mm
Case/Package	TQFP
Mount	Surface Mount
Number of Pins	64
Access Time	16 µs
Data Bus Width	8 b
Density	2 Mb
Frequency	16 MHz
Interface	2-Wire, EBI/EMI, I2C, SPI, UART, USART
Max Frequency	16 MHz
Max Operating Temperature	85 °C
Max Supply Voltage	5.5 V
Memory Size	256 kB
Memory Type	FLASH
Min Operating Temperature	-40 °C
Min Supply Voltage	4.5 V
Number of ADC Channels	8
Number of Bits	8
Number of I2C Channels	1
Number of I/Os	54
Number of Inputs	54
Number of Outputs	54
Number of Programmable I/O	54
Number of PWM Channels	10
Number of SPI Channels	1
Number of Timers/Counters	6
Operating Supply Voltage	5 V
Oscillator Type	Internal
Peripherals	Brown-out Detect/Reset, POR, PWM, WDT
RAM Size	8 kB
Schedule B	8542310000
Watchdog Timer	Yes
Height	1.05 mm
Length	14.1 mm
Width	14.1 mm

Images

Documentation for Microchip ATMEGA2561-16AU

Datasheet	View & Download ATMEGA2561-16AU Datasheet
Datasheet	View & Download ATMEGA2561-16AU Datasheet
Datasheet	View & Download ATMEGA2561-16AU Datasheet
Datasheet	View & Download ATMEGA2561-16AU Datasheet
Datasheet	View & Download ATMEGA2561-16AU Datasheet
Datasheet	View & Download ATMEGA2561-16AU Datasheet
Datasheet	View & Download ATMEGA2561-16AU Datasheet
Datasheet	View & Download ATMEGA2561-16AU Datasheet
Datasheet	View & Download ATMEGA2561-16AU Datasheet
Datasheet	View & Download ATMEGA2561-16AU Datasheet
Datasheet	View & Download ATMEGA2561-16AU Datasheet
Datasheet	View & Download ATMEGA2561-16AU Datasheet
Datasheet	View & Download ATMEGA2561-16AU Datasheet
Datasheet	View & Download ATMEGA2561-16AU Datasheet
Datasheet	View & Download ATMEGA2561-16AU Datasheet
Datasheet	View & Download ATMEGA2561-16AU Datasheet

Alternate Descriptions

Descriptions of Microchip ATMEGA2561-16AU provided by its distributors.
MCU 8-bit AVR RISC 256KB Flash 5V 64-Pin TQFP Tray / IC MCU 8BIT 256KB FLASH 64TQFP
RISC Microcontroller, 8-Bit, FLASH, AVR RISC CPU, 16MHz, CMOS, PQFP64
8-bit AVR MCU, 256 KB, 8192 Bytes, 16 MHz, 1.8 to 5.5V, TQFP-64, RoHS
ATmega Series 256 KB Flash 8 KB SRAM 16 MHz 8-Bit Microcontroller - TQFP-64
AVR microcontroller, 8 bit, 16 MHz, TQFP-64, ATMEGA2561-16AU
8-bit Microcontroller with 64K/128K/256K Bytes In-System Programmable Flash
ATMEGA2561-16AU,8bit AVR Microcontroller,16MHz,256 kB,4 kB Flash,64-Pin TQFP | Microchip Technology Inc. ATMEGA2561-16AU
MCU, 8BIT, ATMEGA, 16MHZ, TQFP-64; Product Range: AVR ATmega Family ATmega256X Series Microcontrollers; CPU Speed: 16MHz; Program Memory Size: 256KB; RAM Memory Size: 8KB; No. of Pins: 64Pins; MCU Case Style: TQFP; No. of I/O'
A/D Inputs:8-Channel, 10-Bit ;CPU Speed:16 MIPS ;EEPROM Memory:4K Bytes ;Input Output:54 ;Interface:2-Wire/SPI/USART ;Memory Type:Flash ;Number of Bits::8 ;Package Type:64-pin TQFP ;Programmable Memory:256K Bytes RAM Size:8K Bytes Speed:16 MHz Timers:2-8-
Device Core = AVR / Data Bus Width Bit = 8 / Instruction Set Architecture = RISC / Family Name = ATmega / Clock Frequency Max. MHz = 16 / Program Memory Type = Flash / Program Memory Size kB = 256 / Data Memory Size kB = 4 / RAM Memory Size kB = 8 / Interfaces = JTAG / Interfaces = PWM / ADC Channels = 8 / ADC Channels = 16 / ADC Resolution Bit = 10 / Number of Programmable I/Os = 54 / Number of Timers/Counters = 6 / Comparators = 1 / Supply Voltage Min. V = 1.8 / Supply Voltage Max. V = 5.5 / Operating Temperature Min. °C = -40 / Operating Temperature Max. °C = 85 / Package Type = TQFP / Pins = 64 / Mounting Type = SMD / MSL = Level-3 / Packaging = Tray
Descriptions of Microchip ATMEGA2561-16AU provided by its distributors.
MCU 8-bit AVR RISC 256KB Flash 5V 64-Pin TQFP Tray / IC MCU 8BIT 256KB FLASH 64TQFP
RISC Microcontroller, 8-Bit, FLASH, AVR RISC CPU, 16MHz, CMOS, PQFP64
8-bit AVR MCU, 256 KB, 8192 Bytes, 16 MHz, 1.8 to 5.5V, TQFP-64, RoHS
ATmega Series 256 KB Flash 8 KB SRAM 16 MHz 8-Bit Microcontroller - TQFP-64
AVR microcontroller, 8 bit, 16 MHz, TQFP-64, ATMEGA2561-16AU
8-bit Microcontroller with 64K/128K/256K Bytes In-System Programmable Flash
ATMEGA2561-16AU,8bit AVR Microcontroller,16MHz,256 kB,4 kB Flash,64-Pin TQFP | Microchip Technology Inc. ATMEGA2561-16AU
MCU, 8BIT, ATMEGA, 16MHZ, TQFP-64; Product Range: AVR ATmega Family ATmega256X Series Microcontrollers; CPU Speed: 16MHz; Program Memory Size: 256KB; RAM Memory Size: 8KB; No. of Pins: 64Pins; MCU Case Style: TQFP; No. of I/O'
A/D Inputs:8-Channel, 10-Bit ;CPU Speed:16 MIPS ;EEPROM Memory:4K Bytes ;Input Output:54 ;Interface:2-Wire/SPI/USART ;Memory Type:Flash ;Number of Bits::8 ;Package Type:64-pin TQFP ;Programmable Memory:256K Bytes RAM Size:8K Bytes Speed:16 MHz Timers:2-8-
Device Core = AVR / Data Bus Width Bit = 8 / Instruction Set Architecture = RISC / Family Name = ATmega / Clock Frequency Max. MHz = 16 / Program Memory Type = Flash / Program Memory Size kB = 256 / Data Memory Size kB = 4 / RAM Memory Size kB = 8 / Interfaces = JTAG / Interfaces = PWM / ADC Channels = 8 / ADC Channels = 16 / ADC Resolution Bit = 10 / Number of Programmable I/Os = 54 / Number of Timers/Counters = 6 / Comparators = 1 / Supply Voltage Min. V = 1.8 / Supply Voltage Max. V = 5.5 / Operating Temperature Min. °C = -40 / Operating Temperature Max. °C = 85 / Package Type = TQFP / Pins = 64 / Mounting Type = SMD / MSL = Level-3 / Packaging = Tray

ATMEGA2561-16AU

Microchip

Specifications

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Documentation for Microchip ATMEGA2561-16AU

Alternate Descriptions

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