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Microchip Technology ATMEGA2561-16AU Microcontroller, Microprocessor, FPGA Modules

IC MCU 8BIT 256KB FLASH 64TQFP

10,187 ActiveMicrochip Technology64-TQFP$17.71RoHS
ATMEGA2561-16AU 64-TQFP package illustration

Same model may have multiple batches, images only for reference.

ATMEGA2561-16AU
Part Number (MPN)
ATMEGA2561-16AU
Detailed Description
IC MCU 8BIT 256KB FLASH 64TQFP
Package
64-TQFP
Key Features
Package / Case: 64-TQFP; Mounting Type: Surface Mount
Lifecycle Status
Active
RoHS State
RoHS Compliant
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Technical Specifications

Microchip Technology ATMEGA2561-16AU Microcontroller, Microprocessor, FPGA Modules technical specifications.

General

Series
ATmega256x
RAM Size
8K x 8
Data Bus Width
8 bit
Maximum Clock Frequency
16 MHz
RoHS
Yes
Package / Case
64-TQFP
Mounting Type
Surface Mount
Operating Temperature
-40°C ~ 85°C (TA)
Supply Voltage
4.5V ~ 5.5V
Lifecycle Status
Active

Related Parts Comparison (ATMEGA2561-16AU vs ATSAMC20J17A-ANTS2 vs PIC32MX450F128H-I/PT vs PIC24FJ128GA306-I/PT)

Side-by-side specifications of related catalog parts.

Engineering verification required. Related parts may have different electrical ratings, pinouts, footprints, and operating limits. Verify suitability for your circuit before substitution.

This PartRelated PartRelated PartRelated Part
Package / Case64-TQFP64-TQFP64-TQFP64-TQFP
Mounting TypeSurface MountSurface MountSurface MountSurface Mount
Operating Temperature-40°C ~ 85°C (TA)-40°C ~ 105°C (TA)-40°C ~ 85°C (TA)-40°C ~ 85°C (TA)
Supply Voltage4.5V ~ 5.5V2.7V ~ 5.5V2.3V ~ 3.6V2V ~ 3.6V
Core ProcessorAVRARM® Cortex®-M0+MIPS32® M4K™PIC
Core Size8-Bit32-Bit Single-Core32-Bit Single-Core16-Bit
RAM Size8K x 816K x 832K x 88K x 8
RoHSYesYesYesYes
Lifecycle StatusActiveActiveActiveActive
ConnectivityEBI/EMI, I²C, SPI, UART/USARTI²C, LINbus, SPI, UART/USARTI²C, IrDA, LINbus, PMP, SPI, UART/USART, USB OTGI²C, IrDA, LINbus, SPI, UART/USART
Data ConvertersA/D 8x10bA/D 12x12bA/D 28x10bA/D 16x10b/12b
Number of I/O54524953
Action

Cross Reference

Manufacturer-stated alternates from official cross-reference tools. These are not a guaranteed pin-compatible drop-in. Qualify package, pinout, and electrical limits against the datasheet before a board change. See cross-reference vs drop-in compatible .

Suggested replacements

More Parts in Microcontrollers

Browse additional parts from the same category, grouped by series, package type, and manufacturer. These are catalog suggestions — not verified pin-compatible alternates.