The Cortex-A5 processor is the smallest, lowest power Armv7 application processor.

Information on Cortex-A5.

Getting Started

The Cortex-A5 is the smallest and lowest power applications processor, delivering rich functionality to high-performance, power-sensitive devices.

Key benefits

  • The smallest application processor designed by Arm with uniprocessor (UP) and multiprocessor (MP) licensing options.

  • Configurable processor with optional NEON, optional FPU, and L1 cache configurable from 4K-64KB.

  • Full feature set of Cortex-A9 processor at one third the area and power.





1-4 cores

ISA Support

Memory Management Unit (MMU)

Armv7 Memory Management Unit

Debug & Trace


DesignStart Pro

Fast, low-cost access to Cortex-A5 through Arm DesignStart.


The Cortex-A5 processor is designed for applications that require virtual memory management for high-level operating systems within a low-power, low-area profile, including:

Digital TV

Smart home

A band that monitors your fitness.



IoT - rich nodes

DVD and audio player

Key features

Feature set of Cortex-A9 for half the size and power

Fully feature compatible with Cortex-A9 processor, provides 70-80% of Cortex-A9 performance and significantly higher efficiency.

Most scalable and configurable Armv7-A processor

The Cortex-A5 processor is extremely configurable and scalable to meet performance, power and area requirements for cost sensitive, low power applications.

Available in single core and multi core configurations

The Cortex-A5 processor is available in two variants: as a single core Cortex-A5 UP processor and as Cortex-A5 MP where it can scale up to four processor cores in a cluster.

Characteristics & Related IP

The Cortex-A5 is the smallest and lowest power applications processor, delivering rich functionality to high-performance, power-sensitive devices.

The processor’s small physical size also means reduced manufacturing costs, reduced system leakage and increased low-cost integration. Compared to the Cortex-A9 processor, the Cortex-A5 achieves more than 50% power efficiency while maintaining around 70-75% of the same performance level, making it ideal for wearable technology.

The Cortex-A5 processor is designed to be a highly configurable processor. The instruction and data cache sizes, for example, can be configured from a 64KB maximum size to as small as 4KB for cost-sensitive applications requiring a small application processor with a Memory Management Unit (MMU).

The Cortex-A5 processor can be incorporated into an SoC using a broad range of Arm technology including Graphics IP, System IP, and Physical IP. The Cortex-A5 processor is fully supported by Arm development tools. Related IP includes:

Graphic IP
Other IP

Mali-400 GPU

CoreLink Network Interconnect Family

CoreLink System Controllers

Interrupt Controllers

CoreSight SoC-400


DS-5 Development Studio

Fixed Virtual Platforms

Development Boards

Arm Compiler

Fast Models


The Cortex-A5 also offers other configurability options such as optional Floating-Point Unit (FPU) and NEON which enable designers to make trade-offs for performance and cost in their targeted application. In its smallest possible configuration with 4KB caches, the Cortex-A5 can be just 0.2mm2 in size at 28nm process technology.

  • Manual containing technical information.
  • Cortex-A5 Technical Reference Manual

    The main resource for hardware and software engineers implementing the Cortex-A5 processor in system designs.

    Read here
  • A program that is running on a desktop.
  • Cortex-A Series Programmer's Guide for Armv7-A

    Common to all Cortex-A series processors, this programmer's guide is useful for assembly and C language application development for Armv7-A.

    Get the guide
  • a ulink, a board, a desktop.
  • Development Tools for Cortex-A

    Arm and our partners provide specialist code generation, debug and analysis tools for software development on Cortex-A series processors, such as DS-5 Development Studio.

    Learn more