Low cost RA0E2 is suitable for fields such as consumer electronics, small appliances, industrial system control, and building automation

On April 22, 2025, Beijing, China - Renesas Electronics (TSE: 6723), a global semiconductor solution provider, announced today the launch of an Arm based? Cortex?- RA0E2 microcontroller (MCU) built with M23 processor. This series of new products has significant cost competitiveness, providing extremely low power consumption while having a wider temperature range, and equipped with multiple peripheral functions and reliable safety features.

The new member of the RA0 series MCU, RA0E2, has ultra-low power consumption, supports 5V system and high temperature. jpg

Renesas launched the RA0 MCU series in 2024, which quickly won the favor of customers due to its high cost-effectiveness and low power consumption characteristics. Among them, RA0E1 has been widely used in many fields such as consumer electronics, home appliances and white goods, power tools, industrial monitoring, etc.

The RA0E2 MCU is compatible with the RA0E1 product, expanding pins while maintaining the same peripherals and ultra-low power consumption. This compatibility allows customers to reuse existing software resources. The new product brings industry-leading low power consumption: its power consumption in working mode is only 2.8mA, and in sleep mode it is as low as 0.89mA. In addition, its integrated high-speed on-chip oscillator (HOCO) achieves extremely fast wake-up time for this series of MCUs, allowing the RA0 MCU to maintain software standby mode for a longer period of time, further reducing power consumption to only 0.25 μ A.

Renesas' RA0E1 and RA0E2 ultra-low power MCUs provide ideal solutions for battery powered consumer electronics devices, small appliances, industrial system control, and building automation applications.

Feature set optimized for low cost

The feature set of RA0E2 has been carefully optimized and designed specifically for cost sensitive applications. It supports a wide operating voltage range of 1.6V to 5.5V, which means customers do not need to equip additional level converters/regulators in 5V systems. The RA0 MCU integrates timers, serial communication, analog functions, functional safety functions, and data security mechanisms, which can effectively reduce customer BOM costs. In addition, the product also offers multiple packaging options, including a 5mm x 5mm 32 pin QFN micro package.

In addition, the new MCU is equipped with high-precision (± 1.0%) HOCO, which can significantly improve the baud rate accuracy, eliminating the need for designers to use independent oscillators. Unlike other HOCOs, this HOCO can maintain this accuracy in environments ranging from -40 ° C to 125 ° C; Such a wide temperature range allows customers to avoid expensive and time-consuming "fine-tuning" operations even after the reflow process.

Daryl Khoo, Vice President of the Embedded Processing Marketing Division at Renesas, stated, "The market response to the RA0 series products has far exceeded our initial expectations. The RA0E2 product group MCU, with its ultra-low power consumption and price advantage, as well as a wider temperature range and larger memory capacity, will explore more application scenarios and cases. We plan to further expand the RA0 product lineup to provide the best solution for users transitioning from 8-16 bit MCUs to 32-bit MCUs

Key features of RA0E2 product group MCU

Core: 32MHz Arm Cortex-M23;

Storage: up to 128KB of code flash and 16KB of SRAM;

Extended temperature range:- 40 ° C to 125 ° C;

Timer: Timer array unit (16 bits x 8 channels), 32-bit interval timer (8 bits x 4 channels) RTC；

Communication peripherals: 3 UART, 2 asynchronous UART, 6 simplified SPI, 2 I2C, 6 simplified I2C;

Analog peripherals: 12 bit ADC, temperature sensor, internal reference voltage;

Functional safety: SRAM parity check, invalid memory access detection, frequency detection, A/D testing, output level detection, CRC calculator, register write protection;

Data security: Unique ID, TRNG, AES library, flash read protection;

Packaging: 32 pin and 48 pin QFN; 32 pin, 48 pin, and 64 pin LQFP.

Renesas RA Family MCU Product Lineup. jpg

The all-new RA0E2 series MCU is supported by Renesas' highly scalable configuration software package (FSP). FSP provides all the necessary infrastructure software for development, including multiple RTOS BSP、 Peripheral drivers, middleware, connectivity, networking, and security stacks, as well as reference software for building complex AI, motor control, and cloud solutions, to accelerate application development speed. It allows customers to integrate their existing code and selected RTOS with FSP, creating ample flexibility for application development. Customers can easily migrate their existing RA0E1 design to larger RA0E2 series products with the help of FSP according to their own needs.

Supply information

The RA0E2 series MCU, FSP software, and RA0E2 rapid prototyping development board are now available on the market. Samples and kits can be ordered on the Renesas website or through distributors.

Advantages of Renesas MCU

As a globally renowned supplier of MCU products, Renesas Electronics' average annual shipments of MCUs have exceeded 3.5 billion units in recent years, with approximately 50% used in the automotive industry and the remainder in industries such as industrial, IoT, data centers, and communication infrastructure. Renesas Electronics has a wide range of 8-bit, 16 bit, and 32-bit product combinations, providing products with excellent quality and efficiency, as well as outstanding performance. Meanwhile, as a trusted supplier, Renesas Electronics has decades of experience in MCU design, backed by a dual source production model, advanced MCU process technology in the industry, and a vast system of over 250 ecosystem partners.

About Renesas Electronics

Renesas Electronics (TSE: 6723), with technology making life easier, is committed to creating a safer, smarter, and more sustainable future. As a global microcontroller supplier, Renesas Electronics integrates expertise in embedded processing, simulation, power supply, and connectivity to provide complete semiconductor solutions. The successful product portfolio accelerates the launch of automotive, industrial, infrastructure, and IoT applications, empowering billions of connected smart devices to improve people's work and lifestyle.

This is reported by Top Components, a leading supplier of electronic components in the semiconductor industry

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