Renesas Launches RX74M and RX74N Flagship 32-bit MCUs

Renesas Electronics Corporation has launched the RX74M and RX74N, new flagship 32-bit microcontrollers (MCUs) that represent a significant advancement in the RX Family. These devices are the first in the series to be built on a 22nm process technology and incorporate embedded Magnetoresistive RAM (MRAM), delivering up to 600 MHz performance. This innovative architecture provides more than twice the performance of their 240 MHz predecessors, the RX72M and RX72N, setting a new standard for real-time processing in industrial applications.

As industrial systems grow in complexity, there is an increasing demand for stable, high-speed execution, seamless connectivity across diverse networks, and robust security measures. The RX74M and RX74N are engineered to meet these challenges by integrating a 600 MHz RXv3e core with 1 MB of MRAM, 256 KB of zero-wait-state Tightly Coupled Memory (TCM), and 1.5 MB of SRAM. The embedded MRAM offers distinct advantages over conventional embedded flash by enabling faster code and data updates, shorter programming times, and reduced system downtime, which is crucial for applications requiring frequent parameter storage, logging, or data updates.

A key differentiator for these MCUs is their comprehensive support for major industrial networks and advanced hardware-based security features. The RX74M, for instance, integrates an EtherCAT slave controller, a TSN-capable Gigabit Ethernet switch, and CAN FD onto a single chip, supporting protocols like EtherCAT, PROFINET, and EtherNet/IP. Both devices also enhance security with features like ProtectZone for secure/non-secure region separation and next-generation Renesas Secure IP (RSIP) supporting post-quantum cryptography (PQC), addressing evolving regulatory demands like the Cyber Resilience Act. The RX74M is designed for industrial automation equipment such as AC drives, industrial robots, and PLCs, while the RX74N targets smart meters, power conditioners, and HVAC systems.

Source Link: Press Release

Specifications

Key Features

• Up to 600 MHz RXv3e core for fast, reliable real-time performance.
• First RX Family MCUs built on a 22nm process technology.
• Integrates 1 MB of embedded MRAM, 256 KB of zero-wait-state TCM, and 1.5 MB of SRAM.
• Delivers more than twice the performance of 240 MHz predecessors (RX72M and RX72N).
• MRAM enables faster code and data updates, shorter programming times, and reduced system downtime.
• RX74M integrates an EtherCAT slave controller, a TSN-capable Gigabit Ethernet switch, and CAN FD onto a single chip.
• Supports major industrial networks including EtherCAT, PROFINET, EtherNet/IP (with TSN and DLR).
• Hardware-based security features include ProtectZone for secure/non-secure region separation.
• Next-generation Renesas Secure IP (RSIP) supports authenticated encryption, broader hash algorithms, and post-quantum cryptography (PQC).
• Available in 300 MHz versions with over 20% lower power consumption.
• Supports a wide supply voltage range from 1.62 V to 3.6 V.
• Operates across an extended temperature range of −40°C to +125°C (Tj).
• Supports XiP (eXecute-in-Place) from external Octa Flash and on-the-fly decryption.

Applications

• Industrial automation equipment
• AC drives
• Industrial robots
• Programmable logic controllers (PLCs)
• Smart meters
• Power conditioners
• HVAC (Heating, Ventilation, and Air Conditioning) systems
• Maglev Conveyor Systems
• Smart HVAC Control with Integrated Slave Actuator

Availability

Renesas Electronics announced that the RX74M and RX74N flagship 32-bit microcontrollers (MCUs) became available on October 22, 2026. Both products are listed as active on the official Renesas website, with multiple variants offering operating frequencies of 300 MHz, 480 MHz, and up to 600 MHz, along with a range of package options. Customers can access product specifications, datasheets, ordering information, and evaluation board details through the official product pages.