IAR Embedded Workbench for Arm Cortex-M

Designed specifically for the Arm Cortex-M core families. It is based on the latest full-licence edition of IAR Embedded Workbench for Arm and provides a comprehensive set of tools in a single package.


User-friendly IDE

One Integrated Development Environment with project management tools and editor. Included are many example projects containing configuration files, code examples and project templates, giving every project a quick start


Specifically designed for Arm Cortex-M

Wide support for devices based on Arm Cortex-M0, Cortex-M0+, Cortex-M1, Cortex-M3, Cortex-M4, Cortex-M7, Cortex-M23, Cortex-M33 and Cortex-M55 from all major vendors such as Analog Devices, Microchip, Cypress, Infineon, Nordic Semiconductor, NXP, Renesas, Silicon Labs, Spansion, STMicroelectronics, Texas Instruments and Toshiba.


Leading compiler technology

The IAR C/C++ Compiler is built by our compiler experts and supports C and C++. It offers advanced global and target-specific optimizations, and supports a wide range of industry-standard debug and image formats, compatible with most popular debuggers and emulators, including ELF/DWARF where applicable. Coupled with the complete linker and assembler, it enables powerful building of embedded applications.


Comprehensive debugger

The C-SPY Debugger provides an Arm instruction simulator and extensive support for debugging probes and target systems. It includes RTOS plugins and wide support for communication stacks and middleware. A C-like macro system and integrated code quality control further extends its capabilities. In addition, it offers multicore debugging with support for symmetric multicore processing (SMP) and asymmetric multicore processing (AMP).

Latest releases

We are constantly updating and refining our tools with new features, new device support and extended capabilities.

Latest version: 9.40

  • IDE Build Actions improvements
    Build actions are a flexible design, to which you can inject and chain commands as part of the build. Build actions will replace the previous pre- and post-build actions with a more intuitive mechanism, to which multiple actions can be executed before compilation and before/after linking.

  • Arm PACBTI support
    Implements the pointer authentication security mechanism initially launched in the Arm Cortex-M85 core.

  • Arm Cortex-A32 support
    Adds support for the Arm Cortex-A32 32-bit core based on the Armv8-A AARCH32 architecture.

  • New compiler GCC extensions
    The following GCC extensions are now supported by the compiler

    • the __auto_type specifier

    • the format function attribute

    • the warn_unused_result function attribute

  • Renesas E2/E2 Lite emulator support
    The Renesas E2 emulator is an advanced on-chip debugging emulator that is now natively supported in IAR Embedded Workbench for Arm.

  • Renesas RA Smart Configurator support for the IAR I-jet debug probe
    For devices that support TrustZone, you can use the Renesas Device Partition Manager (RDPM) in the RA Smart Configurator to check and change the state of the device lifecycle management (DLM), make the memory partition settings, and restore the state of the device. The necessary I-jet driver is distributed as part of the RA Smart Configurator.

  • Support for new devices
Read complete release notes

Version: 9.32

  • Arm Cortex-R82 support
    Support for the new high performance 64-bit Cortex-R82 core based on the ARMv8-R AARch64 architecture.
  • Support for the ST STLINK-V3PWR debug probe (Service Pack v9.32.2)
    Adds full power measurement capabilities when debugging using the ST STLINK-V3PWR probe. Power data can be visualized using the debugger Timeline and Power Log windows. Power statistics are collected and displayed by the debugger Function Profiler.

  • Support for new devices
Read complete release notes

Version: 9.30

  • Arm Cortex-M85 support
  • Arm Cortex-M Custom Instructions support
  • Cortex-R52+ support
  • Extended Armv8-A support
  • Library support for the C++17 language standard
  • Additional GNU C language extensions
  • Editor and IDE enhancements
  • Visual Studio Code support
    The IAR Build and IAR C-SPY Debug extensions available on Microsoft Marketplace enable you to work in Visual Studio Code (with IAR Embedded Workbench installed) to:
    - Build IAR Embedded Workbench projects
    - Run the C-STAT static analysis tool
    - Debug applications using the same range of hardware/debug probes as in IAR Embedded Workbench
  • Supported devices
Read complete release notes

Version 9.20

Arm Cortex-M55 support

Support for the new Cortex-M55 core based on the ARMv8.1-M architecture with features such as MVE (the Helium M-profile Vector Extension) and Low Overhead loops.

IDE Editor updates

  • Editor themes - a new way to set up the colors and fonts in the text editor
  • Syntax feedback - instant syntax suggestions while typing
  • Improved parameter hints

Additional GNU C language extensions

  • pure and const function attributes
  • GNU style statement expressions
  • GNU style case ranges
  • GNU style designated initializer ranges
  • Binary literals with a 0b prefix

Support for latest devices

Added support for devices from Analog Devices, HDSC, HSXP-HK, Microchip, NXP, Renesas, STMicroelectronics and Toshiba. See the complete list in the release notes.

Read complete release notes

What type of license do you need?

Our tools are available in a flexible license model to suit your company needs. Together with our support and update agreements, you get the support you need in multiple time zones and multiple languages. Send a request for quote or contact sales to get started.

Read more about Licenses

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Download free trial

Free trial of IAR Embedded Workbench for Arm

The evaluation license is completely free of charge and allows you to try the software to evaluate its efficiency and ease of use. You can choose either a 14-days trial version or a size-limited version. When you click download, you will be asked to register to get your license.

Please note the following for the 14-day time-limited version:

  • Time limit for evaluation license is 14 days
  • Not allowed to be used for product development or any kind of commercial use
  • Source code for runtime libraries is not included
  • C-RUN is size-limited to 12 Kbytes of code, excluding constant data
  • Limited technical support

Please note the following for the Kickstart, size-limited version:

  • A 32 Kbyte code size limitation
  • Source code for runtime libraries is not included.
  • C-RUN is not available.
  • Limited technical support.
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