Third-Generation, High-Performance CPU Based on DynamIQ Technology

The Foundation for 5G Solutions 

Designed for devices undertaking complex compute tasks, from edge to cloud for next-generation experiences. Cortex-A77 enables intelligent 5G compute, with performance gains on previous generations across all form factors from smartphones to laptops. It maintains Arm’s industry-leading efficiency with a next-generation device architecture that drives the rapid deployment of various applications enabled by 5G.

Features and Benefits

Delivers Premium Performance

Improves IPC performance over previous generations by 20% for complex compute tasks on all mobile form factors.

Enabling 5G Solutions

With 5G devices already available, the rise of always-on, always-connected devices is set to increase as 5G rolls out. Cortex-A77 supports 5G and its mobile use cases, as well as always-connected laptops.

Excellent User Experiences

Users are demanding devices with longer battery life and consistently high performance, all in a thinner form factor. Microarchitecture updates to Cortex-A77 take advantage of DynamIQ efficient cores to improve user experiences.

Cortex-A77 Product Specifications

 Architecture  Armv8-A (Harvard)  
  • Armv8.1 extensions
  • Armv8.2 extensions
  • Cryptography extensions
  • RAS extensions

 Armv8.3(LDAPR instructions only)

 ISA support
  • A64
  • A32 and T32 (at the EL0 only)
 Microachitecture  Pipeline  Out-of-order
   Superscalar  Yes
   Neon / Floating Point Unit  Included
   Cryptography unit  Optional
   Max number of CPUs in cluster  4
   Physical addressing (PA) 
 Memory system and external interfaces  L1 I-Cache / D-Cache  64KB
   L2 Cache  256KB to 512KB
   L3 Cache  Optional, 512KB to 4MB
   ECC support  Yes
   LPAE  Yes
   Bus interfaces  AMBA ACE or CHI
   ACP  Optional
   Perpheral port  Optional
   Functional safety support  ASIL D systematic
   Security  TrustZone
   Interrupts  GIC interface, GICv4
   Generic timer  Armv8-A
   PMU  PMUv3
   Debug  Armv8-A (plus Armv8.2-A extensions)
   CoreSight  CoreSightv3
   Embedded trace macrocell  ETMv4.2 (instruction trace)

Key documentation
Use Cases

Where Innovation and Ideas Come to Life

Faster, low-latency, high-bandwidth 5G networks can connect anything, anywhere, with improved performance, efficiency, and cost. Arm-powered solutions are at the forefront of unleashing the power of the 5th generation mobile network.

Talk with an Expert

Performance and efficiency matter with 5G. Learn how the Cortex-A77 can create a better user experience for your products.

Contact Us
Related Products and Services

Explore More Options and Features



An efficient mid-range processor designed for extreme scalability in constrained environments. It can be combined with premium Cortex-A processors using DynamIQ technology.

Mali Graphics & Multimedia Processors

Mali Graphics Processors

Mali GPUs include both graphics and GPU compute technology to offer a diverse selection of scalable solutions for low-power, high-performance smartphones, tablets, and digital TVs.

Arm Ethos-N78 chip image


Highly scalable and efficient second-generation ML inference processor enables new immersive applications with a 2.5x increase in single-core performance now scalable from 1 to 10 TOP/s and beyond.

System IP

System IP

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.

Partner with Arm to Lead the Mobile Experience

Arm mobile partners deliver exceptional experiences to millions of users across industries and on multiple devices. Discover the benefits of becoming an Arm mobile partner and join industry leaders innovating for the future.

Learn More
Architecture and Technologies

A Foundation of Silicon Success

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.

Linley Group: Arm Ecosystem Reduces SoC Design Cost and Time to Market

Design verification, physical design, and software development directly affect the time to market
and cost of a complete SoC and software stack. Discover how the Arm ecosystem has evolved
to address these challenges and maximize success.

Download White Paper

Cortex-A77 Resources

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.



Tools and Design Reviews


Get Developer Resources