Overview

Arm Zena CSS is accelerating time to market for safe, secure, AI-ready SoC

AI Summary

Arm Zena CSS is a pre-integrated compute subsystem for high-performance SoCs used in Physcial AI applications. It combines Arm Cortex-A processors, a dedicated safety island based on Cortex-R, enhanced cybersecurity functionality, and system IP into a silicon-proven foundation that accelerates platform development for autonomous machines - vehicles and robotics. Designed to meet the demands of next-generation automotive requirements and robotics processing, Zena CSS enables deterministic performance, streamlined integration, and faster time to market for Tier-1 suppliers and OEMs. .

Why choose Arm Zena CSS

Arm accelerated time to market icon

12 months accelerated time-to-market potential

Pre-validated IP and software shorten design cycles and time to market.

Up to 20% less engineering effort icon

Up to 20% less engineering effort

Reduces silicon design work so teams can focus on differentiated capabilities.

Up to 30% faster software porting

Up to 30% faster software porting

Standardizes software interfaces to cut platform-to-platform porting time and lower integration costs.

Benefits

Enabling faster, smarter, safer, secure platforms

  • Shortens development timelines by up to a year with a pre-integrated compute platform designed to support compliance with ISO 26262 and ISO 21434.

  • Accelerates development using virtual platform models and reference firmware for parallel software and silicon design.

  • Reduces platform fragmentation by standardizing on Arm architecture and shared models across domains.

  • Lowers engineering effort by up to 20%, enabling focus on differentiation while supporting mixed-criticality workloads.

Arm Zena CSS Chip image
Inside Zena CSS

The building blocks of Arm Zena CSS

Arm Zena CSS integrates the following components for safety-critical workloads. It is delivered as a configurable package, enabling partners to extend architectures for specific performance, safety, and latency targets.

compute

Compute and system IP

Cortex-A CPUs (such as Cortex-A78AE) alongside Cortex-R52+ processors with CMN-600 coherent mesh, NIC-450 interconnect, and integrated interrupt control.

security and safety

Security and safety

Arm TrustZone isolation, ECC protection, and ASIL D-capable lock-step redundancy designed to support ISO 26262 compliance.

power and efficientcy

Power and efficiency

Power Policy Unit (PPU) and DVFS controllers enable real-time performance at low energy cost.

software

Software and tools

Reference firmware, RTOS support, automotive SDKs, virtual platforms, and simulation models via the Arm Developer Site.

Arm Zena CSS

Explore Arm Zen CSS Safety and Security

Arm Zena CSS Safety

Arm Zena CSS Safety

Arm Zena CSS Safety Island, with ASIL D capability, provides high-integrity fault monitoring and system control for safety.

Arm Zena CSS Security

Arm Zena CSS Security

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

Use cases

Innovation where it matters most

Robotics

Deploy machine learning models directly at the edge for on-device object detection, adaptive behavior, and more. Leverage heterogeneous compute to bring AI-powered intelligence into real time without cloud dependency.

Humanoid robot representing advanced robotics and embodied AI technology.

Digital cockpit and IVI

Deliver rich, immersive graphics and AI-enhanced user experiences. Securely partition multiple operating systems on a single platform to enable a modern, mixed-criticality digital cockpit and in-vehicle-infotainment system.

Digital cockpit interface displaying navigation, AI assistance, and in-vehicle infotainment.

Centralized vehicle compute

Unify compute workloads across the vehicle under a software-defined architecture. This enables safe mixed-criticality operation—from real-time control to infotainment—on a centralized, safety-certified compute platform.

Centralized vehicle compute architecture illustrating power distribution and system integration.

Advanced driver-assistance systems (ADAS)

Create AI-powered ADAS features like collision avoidance that detects erratic driving and preempts an incident or contextual modes that respond as a vehicle transitions from highways, into a city environment. Ensures consistent, scalable performance across vehicle models while enabling real-time, safety-critical functionality.

Driver-view visualization of ADAS detecting surrounding vehicles and traffic conditions.
Humanoid robot representing advanced robotics and embodied AI technology.
Success stories

Success stories powered by Arm Zena CSS

Autonomous vehicle driving through a city with visualized data flow around the car.

AWS builds automotive AI on Arm

Read story

Fleet of electric vehicles showcasing large-scale automotive deployment and innovation.

Volkswagen’s intelligent driving future

Read story

Autonomous mobile robots used for logistics and industrial automation.

ROBOTIS AI autonomous robots

Read story

Discover more success stories
Resources

Latest news and resources

  • News and Blogs
  • Podcasts

Key takeaways

  • Arm Zena CSS delivers pre-integrated, safety-ready compute for next-generation automotive platforms, combining Cortex-A and Cortex-R processors with system IP to accelerate time to market.

  • ASIL-D-capable architecture designed to support ISO 26262 compliance and provide deterministic, real-time safety functionality.

  • Scales across automotive domains including ADAS, digital cockpit, and centralized vehicle compute.

  • Supported by the Arm Developer Hub with SDKs, virtual hardware, and integration tools to accelerate software development.

FAQs

FAQs

How does Arm Zena CSS improve time to market?

Zena CSS provides pre-validated compute subsystems, system IP, and reference software that can reduce development cycles by up to 12 months compared to custom SoC designs.

How does Arm Zena CSS support automotive functional safety standards such as ISO 26262?

Zena CSS includes ASIL-D-capable IP and supports ISO 26262 compliance with detailed safety documentation and diagnostic coverage reports.

Which Arm processors are included in Zena CSS?

Zena CSS integrates Cortex-A CPUs (such as Cortex-A78AE, depending on configuration) alongside Cortex-R52+ processors, balancing performance and real-time determinism for compute domains.

How does Zena CSS support AI-defined vehicle architecture?

Through supporting virtualization, mixed-criticality partitioning, and secure hypervisor enablement, Arm Zena CSS allows continuous feature updates and domain isolation.

Where can developers access tools and models for Zena CSS?

Arm provides reference software, virtual platforms, and development resources on developer.arm.com.

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