Archive : 23 October 2026 год

Renesas Electronics has launched the RX74M and RX74N — flagship 32-bit microcontrollers built on a 22 nm process and featuring embedded MRAM. Operating at up to 600 MHz, they deliver more than twice the performance of the previous RX72M/RX72N generation (240 MHz) and are designed for high-performance industrial and factory automation systems.

Key Characteristics

• Core: RXv3e at up to 600 MHz
• Process technology: 22 nm (first RX family on this node)
• Memory:
  • 1 MB embedded MRAM
  • 256 KB zero-wait-state tightly coupled memory (TCM)
  • 1.5 MB SRAM
• Performance: more than 2× that of RX72M/RX72N
• MRAM advantage: write without prior erase → faster code/data updates and reduced system downtime
• RX74M networking (single-chip):
  • EtherCAT slave controller
  • TSN-capable Gigabit Ethernet switch
  • CAN FD
  • Support for EtherCAT, PROFINET, EtherNet/IP
  • EtherNet/IP Device-Level Ring (DLR) redundancy
• Security:
  • ProtectZone technology (secure / non-secure region separation)
  • Renesas Secure IP (RSIP) with enhanced public-key cryptography
  • Authenticated encryption and additional hash algorithms
  • Support for post-quantum cryptography (PQC) implementations
  • Designed to address Cyber Resilience Act (CRA) requirements

The combination of high clock speed, zero-wait TCM and MRAM enables consistent real-time performance even under frequent interrupts and branching, while the integrated industrial networking and hardware security features simplify IIoT connectivity and firmware protection.

Target Applications

• RX74M: AC drives, industrial robots, PLCs, factory automation
• RX74N: smart meters, power conditioners, HVAC systems

Source: Electronics For You