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ATMEGA2561-16AU

MCHPATMEGA2561-16AU

Microchip Technology
AVR AVR® ATmega Microcontroller IC 8-Bit 16MHz 256KB (128K x 16) FLASH 64-TQFP (14x14)
NRND1,698 in stock
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Overview

The ATMEGA2561-16AU is a high-performance, low-power 8-bit AVR RISC-based microcontroller featuring 256KB of flash memory and 8KB of RAM. It operates at speeds up to 16MHz and provides a wide range of peripheral options including 54 I/O pins, an 8-channel ADC, and multiple serial communication interfaces. The device is designed to balance processing power with energy efficiency, offering six different software-selectable power-saving modes.

Why Choose This Part

This MCU offers a massive 256KB flash capacity for an 8-bit architecture, allowing for complex firmware without moving to a 32-bit platform. The inclusion of 4KB of dedicated EEPROM and 54 I/O pins in a 64-TQFP package provides significant integration density for space-constrained designs.

Applications

Industrial Control Systems
Utilizing the 54 I/O pins and integrated timers for PLC-like logic and sensor monitoring in factory environments.
Communication Gateways
Managing data translation between EBI/EMI external memory interfaces and serial protocols like UART, SPI, and I2C.
Human Interface Devices
Implementing touch-sensitive controls using the supported QTouch library alongside the high pin count for display and button management.

Key Specifications

Speed 16MHz
RAM Size 8K x 8
Core Size 8-Bit
EEPROM Size 4K x 8
Peripherals Brown-out Detect/Reset, POR, PWM, WDT
Connectivity EBI/EMI, I2C, SPI, UART/USART
Mounting Type Surface Mount
Number of I/O 54
Core Processor AVR
Package / Case 64-TQFP
Data Converters A/D 8x10b
Oscillator Type Internal
Program Memory Size 256KB (128K x 16)
Program Memory Type FLASH
Operating Temperature -40degC ~ 85degC (TA)
Supplier Device Package 64-TQFP (14x14)
Voltage - Supply (Vcc/Vdd) 4.5V ~ 5.5V

Getting Started

Engineers can develop for this part using Microchip Studio (formerly Atmel Studio) or the MPLAB X IDE with the XC8 compiler. Hardware debugging and programming are typically performed via the JTAG interface using tools like the Atmel-ICE or Power Debugger. The chip is also compatible with the AVR Libc library for low-level peripheral access.

Also Consider

ATMEGA2560-16AU MCHPMicrochip Technology - Provides the same 256KB flash but in a 100-pin TQFP for designs requiring up to 86 I/O pins.

Categories

Microcontrollers > AVR