Our Most Powerful and Efficient Mid-Range Processor
Cortex-A55, built on DynamIQ technology, is designed for extreme scalability in constrained environments. It features the latest Armv8-A architecture extensions that introduce new NEON instructions for machine learning, advanced safety features and more support for Reliability, Accessibility and Serviceability (RAS).
With a flexible design that meets requirements across multiple markets, the Cortex-A55 processor delivers greater performance, power efficiency and safety over its predecessor.
Microarchitecture improvements provide more responsive user interactions for touchscreens and higher reaction speeds in autonomous automotive applications, for longer periods of sustained performance.
Fine-grained power control ensures Cortex-A55 delivers high performance with superior efficiency.
Configurable L2 cache achieves more than 50% reduced latency for memory accesses. L3 cache shared across up to eight Cortex-A55 CPUs within a single cluster.
|Neon / Floating Point Unit||Optional|
|Max number of CPUs in cluster||Eight (8)|
| Physical addressing (PA)
|Memory system and external interfaces||L1 I-Cache / D-Cache||16KB to 64KB|
|L2 Cache||Optional, 64KB to 256KB|
|L3 Cache||Optional, 512KB to 4MB|
|Bus interfaces||ACE or CHI|
|Functional safety support||ASIL D systematic|
|Interrupts||GIC interface, GICv4|
|Debug||Armv8-A (plus Armv8.2-A extensions)|
|Embedded trace macrocell||ETMv4.2 (instruction trace)|
Smartphones, laptops, and wearable devices need the right performance at the right power efficiency to satisfy the demands of consumers. The Cortex-A55 is designed to deliver top performance in constrained environments, making it ideal for mobile devices.
The car is the most complex electronic device many of us will buy, with more than 100 electronic control units soon to become the norm for most vehicles. More than 85 percent of infotainment systems and many under-the-hood applications are built with Arm-based chips.
Find out how Cortex-A55 can boost the responsiveness of your touchscreen-based devices.
The Cortex-A processor series provides a range of solutions for devices undertaking complex compute tasks, such as hosting a rich operating system platform and supporting multiple software applications.
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Arm System IP enables system designers to configure and build high-performance, power-efficient SoCs while further differentiating with Arm processors and their own IP elements integrated via industry-standard AMBA interfaces.
Arm-based chips, device architectures, and technologies orchestrate the performance of everything that makes modern life possible — from smartphones to agricultural sensors and from medical instruments to servers.
Everything you need to know to make the right decision for your project. Includes technical documentation, industry insights, and where to go for expert advice.