Connected Vehicle

Renesas Electronics announces 28nm cross-domain flash MCU featuring virtualization

Renesas Electronics has announced the microcontroller (MCU) with embedded flash that integrates a hardware-based virtualization -assisted function while maintaining the fast, real-time performance of the RH850 products.
According to the company, the key features of the new RH850/U2A MCU are

Featuring a combination of high performance, on-chip security, and network connectivity, the cross-domain RH850/U2A MCU is designed for the rigorous workloads of multiple automotive control applications including body, chassis/safety, domain control, and low-/mid-range gateways.

• Fast real-time performance and hardware-based virtualization-assisted function to speed ECU integration in complex ASIL D compliant automotive-control systems

The new automotive-control MCU is equipped with up to four 400-megahertz (MHz) CPU cores in a dual core lock-step structure. Each CPU core integrates a hardware-based virtualization-assisted function, while maintaining the same fast real-time performance provided by the RH850. To support ASIL D, the MCU includes self-diagnostic SR-BIST (Standby-Resume BIST) functions with minimized current fluctuation rate. The hardware-based virtualization-assisted function allows multiple software systems with varying ISO26262 functional safety levels to operate independently without interference during high performance. It also reduces the virtualization overhead to maintain real-time execution. This enables users to integrate multiple ECU functions into a single ECU while maintaining safety, security, and real-time operation requirements.

• Advanced, Secure OTA Updates with Large Flash Memory Capacities

The demand continues to grow for MCUs with built-in large capacity flash memory to support over-the-air (OTA) functionality that automatically and wirelessly updates ECU software to control programs without interrupting vehicle operations. The RH850/U2A MCU is equipped with up to 16 megabytes (MB) of built-in flash ROM and 3.6 MB of SRAM, offering users the flexibility for future function expansion.

The MCU includes security functions that support Evita Light up through Evita Full (Note 3) for enhanced protection against cyber-attacks, enabling the device to support safe and rapid Full No-Wait OTA software updates as security requirements evolve.

• Expanded Network Connectivity for ADAS and Autonomous Driving Systems

The RH850/U2A MCU is also equipped with an extensive set of networking interfaces, including an SGMII-standard 1 Gbps Ethernet communications interface and a CAN-FD interface with up to 16 channels, enabling the MCU to process the large amounts of sensor data being generated by multiple types of sensors in ADAS and autonomous driving functions. This allows customers to support future high-speed network functions and advanced communications throughput requirements.

Source: Press Release

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