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ATMEGA4809-MU

MCHPATMEGA4809-MU

Microchip
The raw MCU used on the Nano Every for custom board designs or alternative carrier boards.
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Overview

The ATMEGA4809-MU is an 8-bit AVR microcontroller from Microchip, designed for embedded applications requiring robust performance and peripheral integration. It features a 20MHz core, 48KB of Flash memory, and 6KB of RAM, making it suitable for a wide range of embedded designs. This MCU is notable for its use on the Arduino Nano Every, providing a familiar architecture for developers looking to create custom boards or alternative carrier solutions.

Why Choose This Part

This microcontroller offers a good balance of processing power, memory, and peripheral options in a compact 48-VFQFN package. Its compatibility with the Arduino ecosystem simplifies development for many engineers. The inclusion of features like a hardware multiplier, configurable custom logic (CCL), and an event system allows for efficient and precise control without significant CPU overhead.

Applications

Custom Arduino-compatible Boards
Engineers can design custom PCBs that leverage the ATMEGA4809's features, maintaining compatibility with the Arduino ecosystem while tailoring hardware to specific project needs.
Sensor Interface and Data Acquisition
With a 10-bit 150 ksps Analog-to-Digital Converter (ADC) and multiple communication interfaces like I2C, SPI, and UART, it is well-suited for reading various analog and digital sensors.
Embedded Control Systems
The 8-bit AVR core, coupled with hardware multipliers and a Watchdog Timer, provides a solid foundation for real-time control applications in industrial or consumer products.
Low-Power Device Management
Featuring various low-power modes (Idle, Standby, Power-Down) and a low standby current of 16 uA, it is applicable for battery-powered devices where power efficiency is critical.
Educational and Prototyping Platforms
As the core MCU for the Arduino Nano Every, it serves as an excellent component for educational projects and rapid prototyping due to its accessible programming model and integrated peripherals.

Key Specifications

Speed 20MHz
RAM Size 6K x 8
Core Size 8-Bit
EEPROM Size 256 x 8
Peripherals Brown-out Detect/Reset, POR, PWM, WDT
Connectivity I2C, SPI, UART/USART
Mounting Type Surface Mount
Number of I/O 41
Core Processor AVR
Package / Case 48-VFQFN Exposed Pad
Data Converters A/D 16x10b
Oscillator Type Internal
Program Memory Size 48KB (24K x 16)
Program Memory Type FLASH
Operating Temperature -40degC ~ 85degC (TA)
Supplier Device Package 48-QFN (7x7)
Voltage - Supply (Vcc/Vdd) 1.8V ~ 5.5V

Getting Started

To get started with the ATMEGA4809-MU, engineers typically use the Microchip MPLAB X IDE with the AVR-GCC toolchain. For programming and debugging, the Microchip Unified Program Debug Interface (UPDI) is utilized, requiring a compatible programmer like the MPLAB Snap. The Arduino IDE can also be used, especially when developing for custom boards that emulate the Arduino Nano Every.

ATMEGA4809 Family

Comparing specs that differ across variants. The current part is highlighted.

Part Number Package Flash Temp Range Stock
ATMEGA4809-MU (this part) VFQFN-48 48KB -40degC ~ 85degC (.. 911
ATMEGA4809-AF (Microchip Technology) TQFP-48 48KB -40degC ~ 125degC .. 15,994

Also Consider

ATMEGA328P MCHPMicrochip Technology - This is a widely used 8-bit AVR microcontroller, familiar to many Arduino users, offering a smaller footprint and lower cost for less complex applications.
ATSAMD21G18A MCHPMicrochip Technology - For applications requiring 32-bit processing power and more advanced peripherals, this ARM Cortex-M0+ based MCU is a common choice, also used in some Arduino boards.
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