Overview

MicroEJ is proud to support Renesas’ advanced semiconductor solutions, ranging from the well‑established RX microcontrollers to the latest RZ/A series microprocessors. Together, Renesas and MicroEJ aim to provide Java and C/C++ developers with an on‑device platform that significantly reduces the cost and complexity of building application software, while enabling a faster go‑to‑market strategy for IoT devices.
Through this collaboration, MicroEJ brings strong synergies to Renesas‑based designs. Its software platform delivers high performance on cost‑effective Renesas MCUs and MPUs, while ensuring low energy consumption and extended battery life—an essential requirement for modern embedded and IoT applications. Security is also a key advantage: MicroEJ enhances device protection through effective sandboxing and binary verification mechanisms. In addition, the platform enables the rapid creation of fast and visually appealing user interfaces, supported by open‑source tools, extensive documentation, and a rich library of examples.
MicroEJ further empowers device manufacturers by making it easy to safely open their products to third‑party developers, allowing them to target niche markets and benefit from a global community of more than 20 million developers familiar with MicroEJ technology. Together with Renesas, MicroEJ provides a powerful foundation for building secure, energy‑efficient, and feature‑rich embedded systems.
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