32-bit CPU Core Offers Real-time Performance for Motor Control and Industrial Apps

cpu core

Renesas has developed the 32-bit RX CPU core offering 5.8 CoreMark/MHz to deliver high performance, power efficiency, and responsiveness for next-generation smart factory, smart home and smart infrastructure equipment

The need for increasing added value and system complexity demands higher microcontroller performance. At the same time, energy saving and longer battery life are also needed, so lower power consumption is also demanded.

To meet these demands, Renesas has announced the development of its third-generation 32-bit RX CPU core, the RXv3. The RXv3 CPU core will be employed in Renesas’ new RX microcontroller (MCU) families that begin rolling out at the end of 2018. The new MCUs are designed to address the real-time performance and enhanced stability required by motor control and industrial applications in the next-generation smart factory, smart home and smart infrastructure equipment.


Renesas claims the innovative RXv3 core boosts the proven Renesas RX CPU core architecture with up to 5.8 CoreMark/MHz, as measured by EEMBC Benchmarks, to deliver industry-leading performance (Note), power efficiency, and responsiveness.

The RXv3 core is backwards compatible with the RXv2 and RXv1 CPU cores in Renesas’ current 32-bit RX MCU families. Binary compatibility using the same CPU core instruction sets ensures that applications written for the previous-generation RXv2 and RXv1 cores carry forward to the RXv3-based MCUs, Renesas said.

Designers working with RXv3-based MCUs can also take advantage of the robust Renesas RX development ecosystem to develop their embedded systems.

“The cutting-edge RXv3 core technology targets a wide range of embedded applications in the industrial IoT era where ever increasing system complexity places higher demands on performance and power efficiency,” said Daryl Khoo, Vice President Product Marketing, IoT Platform Business Division, Renesas Electronics Corporation. “The EEMBC CoreMark/MHz processor benchmark clearly shows the RXv3 core outperforms all competing CPU cores. Once again, Renesas delivers superior MCU performance and power efficiency to our customers’ next-generation embedded systems.”

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Key Features of the RXv3 CPU Core

The new RXv3 CPU core is primarily a CISC (Complex Instruction Set Computer) architecture that offers significant advantages over the RISC (Reduced Instruction Set Computer) architecture in terms of code density. RXv3 utilizes a pipeline to deliver high instructions per cycle (IPC) performance comparable to RISC.

The new RXv3 core builds on the proven RXv2 architecture with an enhanced pipeline, options for register bank save functions and double precision floating-point unit (FPU) capabilities for the highest computing performance, power and code efficiency.


Renesas plans to start sampling shipments of RXv3-based MCUs before the end of Q4 2018. For more information on the new RXv3 core, click here.



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