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This ATMEGA4809 Developer Kit & Datasheet has everything you need to build your very own MCU on a breadboard/protoboard.
Prototyping
Arduino
Kits

This ATMEGA4809 Breadboard kit allows you to build out your very own MCU on a breadboard/protoboard. The ATMEGA4809 includes 48KB of Flash and 6KB SRAM. The chip runs from 1.8-5.5v and can reach a top frequency of 20MHz (voltage dependent). The ATMEGA4809 is a part of the newer megaAVR 0-series. Programming is available via UPDI, which is a single line serial connection. If you use the USB-UART programmer, by connecting RX to UPDI pin, and TX to UPDI through a 4.7kΩ series resistor, it functions as a USB-UPDI programmer. This kit is ideal for systems with memory requirements surpassing Arduino UNO capacities, space-bound systems and most importantly: education. Happy building!

Links to code and documentation

Documentation (meridianelectronic.com)

Shipping policy

Shipped from Connecticut via USPS. International shipments include tracking codes. International Delivery typically takes 1-4 weeks with the Standard International Rate. Domestic delivery typically takes 2-5 business days with the Standard Ground Rate. Import duties, VAT, or other fees may be charged by your country on delivery. VAT/Duties are separate from shipping cost charged at checkout.

Here are some extras that might be useful for your project!
Optional USB-C module for the ATMEGA4809 Kit

ATMEGA4809 Dev & Educational Kit (Breadboard, DIY)

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$15.99

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Original Design
This product was designed by Meridian Electronics. By buying this product you support original hardware creators.

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Meridian Electronics

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West Hartford, Connecticut, United States
1 order since Aug 3, 2026
Meridian Electronics builds developer modules for the ICs that power modern hardware. From ADCs to flash memory, oscillator breakouts, USB modules and more. Every board is designed for quality, featuring clean layouts, real documentation, and nothing left half-finished.
Built for hobbyists. Built for innovators. Built for everyone figuring it out in between.