The RH850/U2B next-generation 28nm cross-domain automotive control microcontroller series realizes up to 8 cores x 400MHz incl. Virtualization Support and Quality-of-Service (QoS). The RH850/U2B is equipped with the latest HW-support technologies to realize the integration of multiple ASIL-D SW-partitions into one ECU while ensuring Freedom-From-Interference between the concurrently running applications to meet the ISO26262 ASIL-D standard.

To enhance the performance level for real-time control the RH850/U2B will be partly equipped with the ASIL-D capable DR1000C, a RISC-V based parallel coprocessor IP with vector extension. The DR1000C is ideal for offloading heavy-load arithmetic processing e.g. to cover upcoming requirements, like EU7 exhaust emission legislation in Europe.

Motor/generator-control is the key technology for the electrification trend of all vehicle types. The integrated and comprehensive Renesas solution for traction inverter control incorporates a stand-alone high-performance motor-control accelerator IP (EMU3S) that works in flexible conjunction with multiple dedicated motor-control timer structures like GTM v4.1 and TSG3. As a unique feature, the embedded motor position sensor interface RDC3X (covering resolvers as well as inductive position sensors) provides the option to achieve significant BOM-cost reduction because the usually required external RDC chipset may be omitted.


  • Key features:
    • 400MHz speed for up to 8+4 (LockStep) RH850 G4MH CPUs
    • Top-level ratio of performance vs. power consumption
    • Up to 32MB Flash
    • Up to 5.1MB RAM
    • RISC-V based MIMD high-performance embedded vector processor
    • Embedded EMU3S (Embedded motor control unit), RDC3X (Position sensor interface) and TSG3 (motor timer) for field-oriented traction motor (inverter) control
    • Up to 5 x ADC (12-bit), with a maximum of 128 channels, including 4+4+2+2 Track and Hold inputs
    • Up to 14 x DS-ADCs with a Digital Filter Engine
    • GTM v4.1 vehicle motion timer
    • High temperature support: up to Tj = 160°C
  • State of the Art Interfaces
    • Up to 2x Gigabit Ethernet TSN including a switch function (RSwitch)
    • SFMA (Serial flash memory interface)
    • eMMC
  • Support for FuSa and Security
    • Security module with EVITA Full support
    • ISO26262 ASIL-D
  • Extensive Eco-System supporting the latest standards concerning Tool, HW and SW areas



  • Zone control ECU
  • Domain control ECU
  • Communication gateway
  • Vehicle motion applications
    • xEV, ICE, TCU


Title Type Date
PDF1.20 MB
Application Note
PDF2.09 MB
PDF14.70 MB日本語
General Reliability Literature
PDF845 KB日本語
Manual - Development Tools
PDF1.13 MB日本語
Manual - Development Tools
PDF1.93 MB日本語
Manual - Development Tools
PDF4.35 MB日本語
Manual - Development Tools
PDF2.12 MB日本語
Manual - Development Tools
PDF3.02 MB
Release Note
PDF124 KB日本語
Tool News - Release
PDF160 KB日本語
Tool News - Release
PDF204 KB日本語
Tool News - Release

Design & Development

Software & Tools

Software & Tools

E2 emulator [RTE0T00020KCE00000R]On-chip debugging emulator. Also available as a flash memory programmer. [Support MCU/MPU: RA, RE, RH850, R-Car D1, RL78, RX] Emulator Renesas
CS+Renesas integrated development environment (IDE) [Support MCU/MPU: RH850, V850, RX, RL78, 78K0R, 78K0] (Note: CS+ is not generally promoted to U.S. and European customers.) (Note: To use Smart Configurator on CS+ for RL78/G23 and RX family MCUs, install the Smart Configurator for each MCU family separately downloading from ”Design & Support” > ”Development Tools” > ”Smart Configurator”) IDE and Coding Tool Renesas
Cycle-Accurate Simulator for RH850Instruction simulator that can measure times with accuracy close to actual machine of RH850 under PC environment. For a fee. [Support IDE : CS+] Simulator Renesas
RH850 Smart ConfiguratorRH850 Smart Configurator is an automatic driver generation tool for internal peripheral I/O modules through GUI settings. Solution Toolkit Renesas


Videos & Training

RH850/U2x Virtualization Development Platform

To practically reduce the overall number of ECUs in a car, their functions must become integrated as multiple virtual ECUs on a shared physical ECU. A solution to this challenge is the introduction of a hypervisor-related SW system – developed in cooperation between ETAS and Renesas.

Additional Details

To achieve freedom from interference between integrated applications of a zone control ECU, several HW measures are implemented:

  • Hypervisor HW-assist function to enable a HV-OS in a high-performance manner (fast context switching, HV interrupt concept)
  • Quality of Service (QoS): Latency monitor and regulation function for all bus masters to ensure minimum bandwidth.
  • Memory Protection Unit (MPU): Fine granular separation of bus master access to memory and other resources
  • Guard concept: Highly flexible slave protection system for peripheral memory and peripheral modules
  • Safety: Multiple individual error output signals to ensure individual treatment on a SW-partition level
  • Security: multiple instances of AES128 lockstep modules for conflict-free and deterministic secure and safe communication
  • No-wait OTA: Background operation on flash banks to ensure independent update of individual SW-partitions

Parallel co-processor DR1000C (data flow processor):

The DR1000C is licensed from NSITEXE, Inc. of Japan. NSITEXE is an IP vendor, established in 2017 as a spin-off from DENSO Corp., specializing in the development of advanced processors.

The DR1000C is required by automotive microcontrollers which are targeted for safety critical systems. Up to 16 hardware threads can efficiently utilize the vector processor, thereby achieving extremely high-power performance.