Features
- Eight 1.2 GHz Cortex A55 cores, one 1.0 GHz Cortex® R52 dual core (lock-step) and two 400 MHz RH850 G4MH dual cores (lock-step) deliver up to 45 kDMIPS application performance plus greater than 9 kDMIPS real-time performance
- Abundant automotive interfaces including 16x CAN FD, 16x LIN, 8x SENT, 1x FlexRay, 2x 2-lane PCIe 4.0 allow a wide range of connectivity inside the vehicle
- Integrated 3-port Ethernet TSN switch offers bandwidth of 3 x 2.5 Gbps to deliver fast and low-latency communication in the vehicle backbone and to the outside world
- Incorporated 8MB SRAM to execute code on the RH850 G4MH core with low latency
- Multiple hardware security modules (HSMs) and firewall IP provide enhanced security protection against cyber attacks
- R-Car S4 is compliant to ISO-26262 and supports functional safety according to ASIL B and ASIL D
Description
R-Car S4 enables to launch Car Server/CoGW with high performance, high-speed networking, high security and high functional safety levels that are required as E/E architectures evolve into domains and zones. The R-Car S4 solution allows designers to re-use up to 88 percent of software code developed for 3rd generation R-Car SoCs and RH850 MCU applications. The software package supports the real-time cores with various drivers and basic software such as Linux BSP and hypervisors.
Parameters
| Attributes | Value |
|---|---|
| Parametric Applications | Connected Gateway |
Application Block Diagrams
 | Communication Gateway & Integrated DVR/DMS System Integrated automotive gateway merging CoGW with DVR/DMS video processing. |
 | Vehicle Computer for Future E/E Architecture Next-generation vehicle computer system for advanced E/E architecture with high computing power. |
 | Automotive Communication Gateway Platform Integrated automotive gateway platform with R-Car S4 SoC, multi-network support, and optimized power management. |
Additional Applications
- Vehicle computers
- Communication gateways
- Domain servers
- Application servers
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Renesas Boards & Kits
R-Car S4 Development Board/Spider
The Spider serves as a dedicated R‑Car S4 reference platform for assessing R‑Car S4–based systems and supporting the development of operating systems, device drivers, and applications. It offers a complete development environment with hardware and software for automotive gateway applications to... Read More
R-Car S4 Starter Kit
The R-Car S4 Starter Kit is a low-cost, readily available development board for building software using the Renesas R-Car S4 system on chip (SoC). The SoC delivers high computing performance and an array of communication features for both cloud communication and safe vehicle control. The new... Read More
Vehicle Computer Generation 4
The VC4 is based on a complete Renesas chipset. The centerpiece is the R-Car S4 with 8x Cortex®A55 cores, 1x Cortex® R52 core 2x RH850 G4MH delivering up to 27K DMIPS application performance and up to 5.3K DMIPS lock step real-time performance. It incorporates an 8MB SRAM to execute code on the... Read More
Partner Boards & Kits
DRAM & Flash Memory Solutions
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Please refer to R-Car S4 SDK download guide material (PDF) to download the right packages that fit your needs.
- Software PackageThis is the ICUMX Loader and Flash Writer Package for the R-Car S4 Starter Kit.
- Software PackageThe Flash writer transfers some of binary images from Host PC via SCIF of R-Car Gen4 and writes the binary images to external flash memory. By applying the patch file to the Flash writer, it will be able to write to Winbond Octal NOR Flash (Part numbers: W35T02NW, W35T01NW, W35T51NW, W35T25NW).
- Software PackageThe R-Car S4 Whitebox SDK is an integrated development platform that accelerates the development of connected services applications. All software is provided as an all-in-one package under a Free of Charge (FoC) license.
- Software PackageRenesas' MCAL (Microcontroller Abstraction Layer) software drivers can be obtained as a stand-alone software package.
- IDE and Coding ToolThese 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 ToolIntegrated Software Development Environment. Innovative and Open Development Environment in order to ease SW Development for Computer Vision and Deep Learning Algorithms.
- IDE and Coding ToolMultiple heterogeneous processor cores (Arm core/ RH850 core) integrated in R-Car S4 can be debugged and traced simultaneously. This allows for shorter time to identify the cause and analyze problems in systems where multiple cores work together to achieve a function.
- Solution ToolkitThis software maximizes the performance of hardware by distributing the functions of the application to multiple SoCs or CPUs and HWIPs inside the microcontroller.
- Solution ToolkitThe virtual turnkey platform is a software development kit (R-Car SDK) with pretested software libraries and sample code on the virtual development environment R-Car Virtual Platform (VPF).
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- Software PackageThis is the ICUMX Loader and Flash Writer Package for the R-Car S4 Starter Kit.
- Software PackageThe Flash writer transfers some of binary images from Host PC via SCIF of R-Car Gen4 and writes the binary images to external flash memory. By applying the patch file to the Flash writer, it will be able to write to Winbond Octal NOR Flash (Part numbers: W35T02NW, W35T01NW, W35T51NW, W35T25NW).
- Software PackageThe R-Car S4 Whitebox SDK is an integrated development platform that accelerates the development of connected services applications. All software is provided as an all-in-one package under a Free of Charge (FoC) license.
- Software PackageRenesas' MCAL (Microcontroller Abstraction Layer) software drivers can be obtained as a stand-alone software package.
- IDE and Coding ToolThese 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.View More (49)
Software & Tools (49)
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Simulation Models (5)
Application Specific SWTata Elxsi offers a multi‑core, software‑defined architecture on R‑Car S4 platform using Renesas SDK and Hypervisor. It shows parallel operation on cores with a mix of Classic AUTOSAR, Adaptive AUTOSAR, RTOS, and Linux. On G4MH, the Classic AUTOSAR stack has CAN, mode management, RTE, and OS. On ...Supported Products: R-Car-S4Provided By: Tata Elxsi Ltd.- Application Specific SWCross platform Cinemo SDK, powering the smart cockpit with infotainment use cases like effortless onboarding, seamless media playback, BYOD, multi-screen, premium streaming, in-car gaming, and immersive entertainment.Provided By: Cinemo GmbH
- HMIHigh-performance, scalable and hardware-independent HMI software toolchain for embedded systems. Enables development of customizable 2D and 3D graphical user interfaces with a designer-centric workflow, WYSIWYG editor, no-coding methodology and AI-assisted Smart Importer. Integrated state machine and automated workflows accelerate development. Scales efficiently from low-end ...Provided By: Candera GmbH
- Application Specific SWAutomotive sound generation middleware that enables sound design and tuning on actual hardware or production-equivalent environments. Sound sources are adjusted and verified in real-time using the target device, reducing gaps between prototyping and mass production. Standardizes sound control in software to ensure consistent behavior across different microcontrollers or ...Provided By: CRI Middleware Co., Ltd.
- AIProvides reliable in-cabin sensing through Driver Monitoring Systems (DMS) and Occupant Monitoring Systems (OMS), backed by a long track record in automotive production. Supports deployment of Automotive Safety Integrity Level (ASIL)-rated software alongside advanced safety and cockpit applications on automotive systems-on-chip (SoCs).Provided By: SmarteyeView More (34)
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Support Communities
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Does the latest version of ICUMX IPL for R-Car S4 support Secure Boot? how to get mcu_secureboot and related documents?
... S4 Series Application Domain Security User’s Manual 10. R-Car V4H Series Security User’s Manual 11. R-Car Series, 4th Generation Safety Application Note 13. R-Car S4 Secure Monitor Software User’s Manual 14. R-Car S4 ICUMXB, ICUMHB Firmware Startup Guide Thank you for your help.
Jul 30, 2025 -
R-Car S4 (Gateway)
R-Car S4 (Gateway)
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R-Car S4 Whitebox SDK Build Error
Hi I would like to consult to build error to R-Car S4 sample project. I was following procedure R-Car S4 Whitebox SDK user's manual and did a Rebuild procedure to CA55 and G4MH rebuild. That page on R-Car S4 SDK User's manual as Appendix A1 ...
Sep 18, 2025
Knowledge Base
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What is the difference between R-Car S4 Whitebox SDK and R-Car S4 SDK?
R-Car S4 Whitebox SDK allows early prototyping to begin because of its FoC (Free of Charge) software configuration, which doesn't require a license agreement.On the other hand, R-Car S4 SDK supports a variety of ASIL-D compliant software. See also: FAQ: What is "R-Car S4 ...
May 19, 2023 -
What is "R-Car S4 Whitebox SDK"?
... I do using the R-Car S4 Whitebox SDK? FAQ: Is there a fee for the R-Car S4 Whitebox SDK? FAQ: What evaluation boards are supported by the R-Car S4 Whitebox SDK? FAQ: What is the difference between R-Car S4 Whitebox SDK and R-Car S4 SDK?
Nov 30, 2023 -
How do I run benchmark software using R-Car S4 Whitebox SDK?
For execution procedure of the benchmark software, please refer to the "How to run Benchmark" in R-Car S4 Whitebox SDK Application Note.https://www.renesas.com/whitebox-sdk#document
May 18, 2026
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