Japanese IP company's RISC-V processor is adopted by Renesas automotive MCU-EEWORLD

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Yukihide Niimi, President and CEO of NSITEXE, Inc., headquartered in Minato-ku, Tokyo, Japan, recently announced that the company’s RISC-V-based parallel processor IPDR1000C with vector extensions (DFP) has been licensed to Renesas Electronics for use in the RH850/U2B microcontrollers (MCUs), a group of powerful new automotive MCUs.

According to reports, the RH850/U2B MCU is designed to meet the growing demand for integrating multiple applications into a single chip and to enable a unified electronic control unit (ECU) for the evolving electrical and electronic (E/E) architecture. The cross-domain RH850/U2B MCU combines high performance, flexibility, non-interference and security, and is designed to meet the demanding workloads required for vehicle movement, including hybrid ICE and xEV traction inverters, high-end regional control, connection gateways and domain control applications.

The RH850/U2B MCU section is equipped with the DR1000C, a RISC-V based parallel processor IP with vector extensions (DFP: Data Flow Processor), licensed as an accelerator by NSITEXE, Inc. The DR1000C is ideal for offloading the heavy-duty arithmetic processing required by automotive MCUs for safety-critical systems (model predictive control, real-time modeling, sensor data processing, etc.). Up to 16 hardware threads can effectively utilize the vector processor, resulting in extremely high power performance.

DR1000C is the world's first (as of June 30, 2021) RISC-V processor that meets the ASIL D safety requirement level of the ISO 26262 vehicle functional safety standard and has obtained ISO 26262 ASIL D Ready certification from SGS-TÜV. Specifically, it is a parallel processor that is optimized to offload intensive calculations that need to be performed by the vehicle control microcomputer (MPU) through multi-threading mechanisms and vector instructions. By integrating DR1000C, the vehicle control MPU can handle advanced control algorithms such as model predictive control and meet increasingly stringent clean energy laws and regulations.

The ASIL D-compliant DR1000C-SDK (Software Development Kit) provides safe and accurate thread control as well as memory protection and time protection functions. By leveraging these features and the ISO 26262-compliant tool chain, users can focus on application development, thereby reducing development time. The thread control software included in the SDK has various functions required for safety-critical systems, such as priority execution of real-time tasks and thread execution monitoring.

DR1000C-HSK (Hardware Safety Kit) provides Failure Mode Effects and Diagnostic Analysis (FMEDA), Safety Manual, Safety Case Report and ISO 26262 related documents. It reduces the time required to analyze and obtain functional safety certification for automotive MCUs. DR1000C is developed based on ISO 9001 quality management system to meet strict automotive quality requirements.

DR1000C is suitable not only for vehicle control MPUs but also for various embedded systems such as industrial equipment, including factory automation and sensor processing, including radar. Its development and evaluation status has been deeply evaluated by semiconductor manufacturers in Japan and Europe.

Naoki Yoshida, Vice President of Automotive Digital Product Marketing Division at Renesas Electronics, said, "The amount of MCU processing required to achieve advanced vehicle control is increasing. By adopting the NSITEXE DFP (DR1000C) as an accelerator, the RH850/U2B can achieve offloading of computationally heavy operations and safety-critical real-time systems. We believe that Renesas Electronics will now be able to provide a platform to build advanced automotive systems for regional and domain control applications that require high performance, precision, and reliability."

Hideki Sugimoto, CTO of NSITEXE, Inc., emphasized that at NSITEXE, development work is focused on three pillars – versatility, efficiency and functional safety – and takes into account a large number of future trends. The DR1000C implements these as a high-performance MIMD-based embedded vector processor with high functional safety for users who want to control embedded systems efficiently, rationally and safely.

The DR1000C provides efficient processing power and reliability not only for automotive applications in green energy, but also for many embedded systems that require a high degree of safety in fields such as factory automation and medical.

Based on its commitment to high functional safety and its innovative processor technology, NSITEXE can support smart mobility and MaaS, thus changing the world in a way that enriches people's lives.

It is worth mentioning that NSITEXE is an IP supplier founded in 2017. It was spun off from DENSO and specializes in the development of advanced processors. The company develops RISC-V-based processor IP that supports functional safety. Efficient and high-quality semiconductor IP supports a wide range of applications and contributes to the development of next-generation semiconductor technology.

Keywords：RISC-V Reference address：Japanese IP company's RISC-V processor is adopted by Renesas automotive MCU

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