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Overview

Description

The RH850/U2A MCU is the first member of Renesas’ cross-domain MCUs, a new generation of 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/U2A automotive MCU builds on key functions from Renesas’ RH850/Px Series for chassis control and RH850/Fx Series for body control to deliver improved performance.

This 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, which allows multiple software systems with varying ISO 26262 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.

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.

The RH850/U2A MCU is also equipped with an extensive set of networking interfaces, 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.

Features

  • Key Features:
    • 400MHz speed for up to 4+4 (LockStep) RH850 G4MH CPUs
    • Top-level ratio of performance vs. power consumption
    • Up to 16MB Flash
    • Up to 3.6MB RAM
    • Up to 3 x ADC (12-bit), with a maximum of 94 channels, including 4+4 Track and Hold inputs
    • GTM v3.5 vehicle motion timer
    • Various generic timer modules including watchdog, OS, TAUx
    • High-temperature support: up to Tj = 160 °C
    • Low power consumption
  • State of the Art Interfaces
    • Up to 2x Ethernet AVB including Gbit and 100MBit
    • CAN FD, FlexRay, SPI, RHSIF, SENT, LIN, UART, I2C, PSI5, CXPI
    • SFMA (Serial flash memory interface)
    • eMMC
  • Support for Functional Safety (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
  • Hypervisor support

Comparison

Applications

Documentation

Design & Development

Software & Tools

Software & Tools

Software title
Software type
Company
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]
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
Debug and Trace Tools for Multi-Devices
These tools facilitate the analysis and identification of the causes of problems that occur in the software that operates cooperatively on the CPUs of multiple devices.
IDE and Coding Tool Renesas
Co-Simulation Environment for Multi-Devices
This is a multi-device operation simulation environment that integrates a group of simulators such as the R-Car Virtual Platform that are provided for the individual devices to enable coordinated operation.
Simulator MathWorks, Australian Semiconductor Technology Company, Synopsys
Distributed Processing Software for Multi-Devices
This software maximizes the performance of hardware by distributing the functions of the application to multiple SoCs or CPUs and HWIPs inside the microcontroller.
Solution Toolkit Renesas
RH850 Smart Configurator
RH850 Smart Configurator is an automatic driver generation tool for internal peripheral I/O modules through GUI settings.
Solution Toolkit Renesas
PG-FP6
Flash memory programmer [Programming software: Dedicated GUI-based software, the "FP6 Terminal"] [Support MCU/MPU and devices: RA, RE, RX, RL78, RH850, RISC-V MCU, Renesas Synergy, Power Management, Renesas USB Power Delivery Family, ICs for Motor Driver/Actuator Driver, SuperH RISC engine, V850, 78K, R8C]
Programmer (Unit/SW) Renesas
Renesas Flash Programmer (Programming GUI)
Flash memory programming software [Support MCU/MPU and devices: RA, RE, RX, RL78, RH850, RISC-V MCU Renesas Synergy, DA1453x, DA1459x, DA1469x, DA1470x, Power Management, Renesas USB Power Delivery Family, ICs for Motor Driver/Actuator Driver, V850, 78K0R, 78K0]
Programmer (Unit/SW) 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.
IDE and Coding Tool Renesas
IE850A
Emulator System for RH850. This product supports external tracing (Aurora tracing) .
Emulator Renesas
RTE7702200EAB00000J
Emulation adapter for RH850/U2A
Emulator Renesas
Renesas MCAL
Renesas' MCAL (Microcontroller Abstraction Layer) software drivers can be obtained as a stand-alone software package.
Software Package Renesas
C Compiler Package for RH850 Family [CC-RH]
C Compiler Package for RH850 Family [IDE: CS+, e² studio]
Compiler/Assembler Renesas
13 items

Software Downloads

Device File - Partner Tool Log in to Download ZIP 230.21 MB
Software & Tools - Other Log in to Download ZIP 343 KB
Software & Tools - Software Log in to Download ZIP 4.39 MB
Software & Tools - Other Log in to Download ZIP 428.12 MB
Software & Tools - Software Log in to Download ZIP 35.33 MB
Software & Tools - Software Log in to Download ZIP 3.34 MB
6 items

Sample Code

Boards & Kits

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.

Diagram of ECAD Models

Models

Model - BSDL Log in to Download ZIP 173 KB
Model - IBIS Log in to Download ZIP 17.44 MB
2 items

Product Options

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Support

Support Communities

Support Communities

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Browse FAQs

FAQs

Browse our knowledge base of common questions and answers.
Submit a Ticket

Submit a Ticket

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Partners

Vector Informatik GmbH

The MICROSAR evaluation package includes the Vector basic software according to AUTOSAR Classic as well as all necessary software tools.

Embien Technologies India Pvt.Ltd

Embien has been working with Renesas devices for 10+ years helping OEM's and Tier 1s create products for Industrial and Automotive segments.

Support Communities

  1. RH850/U2A how to count memory usage?

    Hello Experts: Q1: I'm counting project ROM/RAM usage and currently want to count the generated memory map via python. Is there an out of box tool for it ? Q2: The gsh compiler generates some extra sections that I believe don't need to be counted in, are ...

    Mar 27, 2024
  2. RH850-U2A RIIC communication is unstable

    Hi, Chip model: RH850-U2A8 Background: In my project, I needed to communicate with TMP451 through RIIC. Since RIIC module was not included in MCAL, I used SmartConfigurator to generate relevant code. The problems are as follows: When testing the communication, I found that the communication was unstable, sometimes the ...

    May 11, 2023
  3. RH850/U2A: e2 greenhills automatically initializes the RAM area

    Hello Experts:I'm currently having some problems debugging the u2a chip using e2 greenhills,: when linking with a debugger the debugger is supposed to initialize the ram, how can I stop the debugger from automatically initializing the RAM area? Because we are currently experiencing some problems with ram initialization ...

    Mar 26, 2024
View All Results from Support Communities (105)

FAQs

  1. RH850 U2A SVR parameter error

    Try disabling the Set SVR Parameter option on the debug tool connect settings option and see if you are able to connect to the device.

    Nov 7, 2024
  2. Transmitter delay compensation (TDC) on RH850/U2A

    Last updated: 11/7/2025 Question:  What is the Transmitter delay compensation ?   Answer: In case a high Baud Rate is used such as 5 to 8 Mbps for the Data phase, the Transmitter delay could become greater than TSEG1. In this case the transmitter would always detect a ...

    Jan 1, 1970
  3. Reliability report, FIT/MTBF for RH850

    ... the top drop-down menu "Design Resources" -> "Search" -> "Documentation & Downloads". Select the "Type Filter (optional)" for "Quality, Reliability, & Packaging" -> "Product Reliability Report". You may additionally set an additional filter for the part number in the field "Part Number(s) (optional)" (e.g. "2300" for RH850/U2A device)

    Feb 7, 2024
View All Results from FAQs (12)

Videos & Training

CAN XL and 10BASE-T1S – Protocol Comparison Demo Using Vehicle Computer 3

Learn about two new automotive protocols and how efficient software design and hardware accelerators can lower processing demand in gateway applications.