Platform Atmel megaAVR: 8-bit MCUs Built for Real-time Control with Core Independent Peripherals combining intelligent hardware peripherals along with the low-power capability of an AVR core, megaAVR microcontrollers (MCUs) broaden the effectiveness of your real-time control systems.

Microcontroller ATMEGA4809
Frequency 16MHz
Flash 48KB
Vendor Microchip


Please use ATmega4809 ID for board option in “platformio.ini” (Project Configuration File):

platform = atmelmegaavr
board = ATmega4809

You can override default ATmega4809 settings per build environment using board_*** option, where *** is a JSON object path from board manifest ATmega4809.json. For example, board_build.mcu, board_build.f_cpu, etc.

platform = atmelmegaavr
board = ATmega4809

; change microcontroller
board_build.mcu = atmega4809

; change MCU frequency
board_build.f_cpu = 16000000L


Debugging currently does not support ATmega4809 board.


Name Description
Arduino Arduino Wiring-based Framework allows writing cross-platform software to control devices attached to a wide range of Arduino boards to create all kinds of creative coding, interactive objects, spaces or physical experiences