Overview
Description
The RH850/U2B is Renesas' cross-domain microcontroller series, a new generation of high-end automotive-control devices, designed to address the growing need to integrate multiple applications into a single chip to realize unified electronic control units (ECUs) for the evolving electrical/electronic architecture (E/E architecture). Based on 28 nanometer (nm) process technology, the 32-bit RH850/U2B automotive MCU builds on key functions from Renesas’ RH850/Ex Series for engine control and RH850/Cx Series for xEV to deliver improved performance.
This automotive-control MCU is equipped with up to four 400 megahertz (MHz) CPU cores + up to three dual-core lock-step. Each CPU core integrates virtualization support and Quality-of-Service (QoS) for X-in-1 applications. The latest hardware support technologies 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 ISO 26262 ASIL D standard.
The MCU includes security functions fulfilling EVITA Full for enhanced protection against cyber-attacks, enabling the device to support safe and rapid full no-wait Over-the-Air (OTA) software updates as security requirements evolve.
And the MCU 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.
To enhance the performance level for real-time control the RH850/U2B will be partly equipped with the DFP (DR1000C), a RISC-V based parallel coprocessor IP with vector extension. The DR1000C is ideal for offloading heavy-load arithmetic processing designed to address the evolving performance demands of electric mobility (eMobility), autonomous driving, and next-generation E/E architectures, including their high-level demand in network security. The DR1000C is licensed from DENSO Corp. of Japan.
Features
- Key features:
- 400MHz speed for up to 4 + up to 3 (LockStep) RH850 G4MH CPUs
- Top-level ratio of performance vs. power consumption
- Up to 10MB Flash
- Up to 1.28MB 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 4 x ADC (12-bit), with a maximum of 94 channels, including 6+6+0+0 Track and Hold inputs
- Up to 10 x DS-ADCs with a Digital Filter Engine
- Up to 20 x 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 100Mbit Ethernet TSN
- CAN-FD, SPI, RHSB (MSC), RHSIF, SENT, LIN, UART, I2C, PSI5,
- SFMA (Serial flash memory interface)
- eMMC
- Support for FuSa and Security
- Security module with EVITA Full support
- ISO 26262 ASIL D
- Extensive ecosystem supporting the latest standards concerning tool, hardware, and software areas
Comparison
Applications
Design & Development
Software & Tools
Software & Tools
Software title
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Software type
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Company
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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, RISC-V MCU]
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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”)
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IDE and Coding Tool | Renesas |
RH850 Smart Configurator RH850 Smart Configurator is an automatic driver generation tool for internal peripheral I/O modules through GUI settings.
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Solution Toolkit | Renesas |
Cycle-Accurate Simulator for RH850 Instruction simulator that can measure times with accuracy close to actual machine of RH850 under PC environment. For a fee. [Support IDE : CS+]
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Simulator | Renesas |
e² studio - information for RH850 Family Eclipse-based Renesas integrated development environment (IDE).
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IDE and Coding Tool | Renesas |
Green Hills MULTI Device-Support-Packages Green Hills MULTI Device-Support-Packages include all device specific files to be used with the MULTI IDE.
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IDE and Coding Tool | Renesas |
IE850A Emulator System for RH850. This product supports external tracing (Aurora tracing) .
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Emulator | Renesas |
Model-Based Development Environment for RH850, R-Car Family [Embedded Target for Virtual Platform] Embedded Target for RH850 Virtual Platform is a development environment that generates peripheral code for target devices from Simulink® models and enables cooperative verification as Virtual Hardware In the Loop Simulation (vHILS) in a virtual environment with Simulink.
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Model-Based Development | Renesas |
RH850 Multicore Model-Based Environment [Embedded Target for RH850 Multicore] The Embedded Target for RH850 Multicore is a RH850 model-based multicore environment that simplifies complex driving control for the autonomous-driving era. In addition to the multicore support of the PILS tool for automatic configuration of environments, Embedded Target for Renesas CS+, it can also be interlinked with a model-based parallelization tool from eSOL Co., Ltd.
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Model-Based Development | Renesas |
C Compiler Package for RH850 Family [CC-RH] C Compiler Package for RH850 Family [IDE: CS+, e² studio]
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Compiler/Assembler | Renesas |
Renesas MCAL Renesas' MCAL (Microcontroller Abstraction Layer) software drivers can be obtained as a stand-alone software package.
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Software Package | Renesas |
11 items
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Sample Code
Boards & Kits
RH850/U2B 292pin Piggyback Board of RH850 Evaluation Platform
The RH850/U2B 292pin piggyback board supports all devices of the RH850/U2B series in 292pin-package. It can be used standalone or in combination with a mainboard of the RH850 evaluation platform. The modular RH850 evaluation platform consisting of mainboards and piggyback boards is a platform...
RH850/U2B 373pin Piggyback Board of RH850 Evaluation Platform
The RH850/U2B 373pin piggyback board supports all devices of the RH850/U2B series in 373pin-package. It can be used standalone or in combination with a mainboard of the RH850 evaluation platform. The modular RH850 evaluation platform consisting of mainboards and piggyback boards is a platform...
RH850/U2B 468pin Piggyback Board of RH850 Evaluation Platform
The RH850/U2B 468pin piggyback board supports all devices of the RH850/U2B series in 468pin-package. It can be used standalone or in combination with a mainboard of the RH850 evaluation platform. The modular RH850 evaluation platform consisting of mainboards and piggyback boards is a platform...
RH850/U2B10 Target Board with Automotive (ASIL-D) Power Management IC
The RH850/U2B10 and Power Management IC Target Board serves as an evaluation board with Arduino form factor. The circuit shows a possible implementation of the RH850/U2B10 MCU and an automotive (ASIL-D) power management IC.
Models
ECAD Models
Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on the CAD Model links in the Product Options table. If a symbol or model isn't available, it can be requested directly from SamacSys.

Product Options
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Videos & Training
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.