Overview

Functional Safety Drives Next-Generation SDVs
with Automotive Compute Solutions

Arm Zena CSS is a high-performance, functionally safe computing platform for next-generation software-defined vehicles. Built on Arm Automotive-Enhanced IP supporting ADAS, IVI, AI cockpit workloads, and real-time control via a dedicated Safety Island with an Arm Cortex-R82AE cluster. Build on ASIL D systematic capabilities and targeting SDV safety applications, driving the functional safety needs and future SDV vehicle strategies.


Arm Zena CSS Safety powers software-defined vehicles with built-in safety and AI support. Featuring a dedicated safety island, it handles real-time control, diagnostics, and fault management at ASIL D levels.

Features and Benefits

ASIL D Safety Integrity

Arm Zena CSS provides ASIL D systematic and up to ASIL D diagnostic capability on compute platform to enable ADAS, IVI workloads.
Dedicated
Safety Island

The Safety Island provides a high-integrity component to collect and manage system level faults with ASIL D diagnostic capability.

Comprehensive
Safety Documentation

Arm Zena CSS delivers easy-to-integrate safety features to help partners speed time to market.
Arm Zena CSS Safety Chip Diagram
Specifications

Arm Zena CSS Safety Specifications

Arm Zena CSS Safety Island is a dedicated, always-on subsystem designed for system-level diagnostics, fault management in safety-critical automotive environments.

  • Built on a lock-stepped Cortex-R82AE cluster for ASIL D diagnostic and systematic capability
  • Manages clock, voltage, and system reset functions
  • Plays a critical role in system boot-up
  • Operates in an always-on, isolated power and clock domain
  • Executes safe diagnostic monitoring independently of main compute
  • Integrates a Fault Management Unit (FMU) to detect, classify, and respond to hardware faults
  • Includes a Message Handling Unit for secure internal communication across the platform
Compute Subsystems

Explore Arm Zena CSS

Arm Zena CSS

Arm Zena CSS

Arm Zena CSS is the fastest path to building high-performance automotive SoCs on Arm. It delivers leading performance-per-watt and functional safety and cybersecurity solutions to accelerate time–to–market.

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Arm Zena CSS Security

Arm Zena CSS Security

Arm Zena CSS security enclave targets ASIL B safety, mitigating threats for next-gen automotive E/E architectures.

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Related Product
Arm Cortex-R82AE Hero Chip

Arm Cortex-R82AE

Arm Cortex-R82AE is the highest performance real-time processor for safety-related applications from Arm, implementing the 64-bit Armv8-R AArch64 architecture.

Learn More
USE CASES
Where Products and Innovation Come to Life

Security for AI

Artificial intelligence (AI) workloads and use cases are expanding and defining more applications than ever. This is especially true for the next generation of software-defined vehicles, which is redefining how people interact with their vehicles. Arm Zena CSS provides a range of energy-efficient heterogeneous processing elements with the latest architectural features to enhance AI capabilities for new vehicle applications.

Talk with an Expert

Find out how Arm Zena CSS can accelerate your Automotive development.

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Resources

Arm Zena CSS Safety Resources

CSS Resources

Blogs