ATMEGA2561-16AUR is out of stock and can be placed on backorder.
Available Substitutes:

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Infineon Technologies
In Stock: 520
Unit Price: $3.47000
Datasheet
AVR AVR® ATmega Microcontroller IC 8-Bit 16MHz 256KB (128K x 16) FLASH 64-TQFP (14x14)
Image shown is a representation only. Exact specifications should be obtained from the product data sheet.
AVR AVR® ATmega Microcontroller IC 8-Bit 16MHz 256KB (128K x 16) FLASH 64-TQFP (14x14)
64-TQFP

ATMEGA2561-16AUR

DigiKey Part Number
ATMEGA2561-16AURTR-ND - Tape & Reel (TR)
ATMEGA2561-16AURCT-ND - Cut Tape (CT)
ATMEGA2561-16AURDKR-ND - Digi-Reel®
Manufacturer
Manufacturer Product Number
ATMEGA2561-16AUR
Description
IC MCU 8BIT 256KB FLASH 64TQFP
Manufacturer Standard Lead Time
28 Weeks
Customer Reference
Detailed Description
AVR AVR® ATmega Microcontroller IC 8-Bit 16MHz 256KB (128K x 16) FLASH 64-TQFP (14x14)
Datasheet
 Datasheet
EDA/CAD Models
ATMEGA2561-16AUR Models
Product Attributes
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Category
Program Memory Size
Mfr
Program Memory Type
FLASH
Series
EEPROM Size
4K x 8
Packaging
Tape & Reel (TR)
Cut Tape (CT)
Digi-Reel®
RAM Size
8K x 8
Part Status
Active
Voltage - Supply (Vcc/Vdd)
4.5V ~ 5.5V
DigiKey Programmable
Not Verified
Data Converters
A/D 8x10b
Core Processor
AVR
Oscillator Type
Internal
Core Size
Operating Temperature
-40°C ~ 85°C (TA)
Speed
16MHz
Mounting Type
Surface Mount
Connectivity
EBI/EMI, I2C, SPI, UART/USART
Supplier Device Package
64-TQFP (14x14)
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Package / Case
64-TQFP
Number of I/O
54
Base Product Number
Associated Products
Environmental & Export Classifications
Product Questions and Answers
Additional Resources
Substitutes (1)
Part NumberManufacturerQuantity AvailableDigiKey Part NumberUnit PriceSubstitute Type
CY8C4128AXI-S445Infineon Technologies5202832-CY8C4128AXI-S445-ND$3.47000Similar
In-Stock: 0
1,000 expected in stock on 07-Dec-2026
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All prices are in USD
Cut Tape (CT) & Digi-Reel®
QuantityUnit PriceExt Price
1$15.68000$15.68
25$15.28480$382.12
* All Digi-Reel orders will add a $7.00 reeling fee.
Tape & Reel (TR)
QuantityUnit PriceExt Price
1,000$13.02007$13,020.07