IAR Embedded Workbench for Coldfire

The complete development toolchain IAR Embedded Workbench for Coldfire provides one toolbox in one view, giving you one uninterrupted workflow.


User-friendly IDE

Integrated development environment with project management tools and editor. Included is automatic checking of MISRA C rules (MISRA-C:2004), configuration files, linker and library tools as well as example projects and code templates.


Powerful build tools

The IAR C/C++ Compiler is a highly optimizing C and C++ compiler for Coldfire. Included is also run-time libraries and a relocating Coldfire assembler.


Comprehensive debugger

The C-SPY Debugger is a comprehensive debugger with simulator and support for RTOS-aware debugging on hardware and C-SPY target system support for simulator, J-Link for ColdFire BDM 26, and P&E BDM interface: Multilink, Cyclone MAX and Cyclone PRO.

Latest releases

Version 1.23

Information Center

A web-based navigation system that gives easy access to tutorials, product documentation and example projects. Choose Help>Information Center to display the Information Center.

Debugging multiple images

C-SPY can now debug several independently built images during one debug session. Choose Project options>Debugger>Images to specify the location of the images to be downloaded in addition to the current application. There is also a new debugger window called Images where you select which application debug information shall be displayed for.

64-bit OS support

The C-SPY drivers for P&E USB Multilink, P&E Cyclone MAX, P&E Cyclone PRO, and J-Link for ColdFire have been updated to support 64-bit versions of Windows Vista and Windows 7.

Support for new devices

Hardware debug support for these new devices has been added

  • MCF51CN128
  • MCF51EM256
  • MCF51JE256
  • MCF51JE128
  • MCF51MM256
  • MCF51MM128
  • MCF5208
  • MCF5232
  • MCF5233
  • MCF5234
  • MCF5235
  • MCF52274
  • MCF52277

RTOS plug-in

C-SPY RTOS plugin modules for MQX and ThreadX have been added.

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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User guides and documentation

Languages and standards

The IAR C/C++ compilers offer different dialects of the C and C++ programming languages, as well as different extensions specific for embedded programming (please note that not all language standards are supported for all target implementations). The compiler can be instructed to disable extensions for strict conformance to the standards. 

A wide range of industry-standard debug and image formats compatible with most popular debuggers and emulators are supported. This includes ELF/DWARF where applicable.

ISO/ANSI C/C++ Compliance

The IAR C/C++ compilers adhere to a freestanding implementation of the following C programming language standards:

  • INCITS/ISO/IEC 9899:2018, known as C18 (Latest version only).
  • The compiler supports all C++17 features. The C++ library supports C++14 with no C++17 additions.  (Latest version only).
  • ISO/IEC 14882:2015, known as C++14
  • INCITS/ISO/IEC 9899:2012, known as C11
  • ANSI X3.159-1989, known as C89

The ISO/ANSI C/C++ Compliance level varies between the different compilers. For complete information, please refer to the IAR C/C++ Compiler user documentation in your chosen product.

IEEE 754 standard

IAR Embedded Workbench supports the IEEE 754 standard for floating-point arithmetic.


MISRA C is a software development standard for the C programming language developed by MISRA, The Motor Industry Software Reliability Association. Its aims are to facilitate code safety, portability and reliability in the context of embedded systems, specifically those systems programmed in ISO C.

The first edition of the MISRA C standard, "Guidelines for the use of the C language in vehicle based software", was produced in 1998. In 2004, a second edition was produced with many substantial changes to the guidelines, including a complete renumbering of the rules. Additionally MISRA C:2012 with extended support and MISRA C++:2008 for identifying unsafe code constructs in the C++ standard have also been added to the standards.

IAR Embedded Workbench features an add-on product C-STAT so you can check compliance with rules as defined by MISRA C:2004, MISRA C++:2008 and MISRA C:2012.

Test validation

We use the following commercial test suites to test conformance of our tools to the standards:

  • Plum Hall Validation test suite for ISO/IEC C conformance
  • Perennial EC++ Validation Suite for C++ conformance
  • Dinkum C++ Proofer to test how our libraries conform to the C and C++ standard as well as test our STL implementation against the C++ standard.

In addition to the commercial suites, we use several in-house test suites for testing new features, regression testing, corrected errors, etc.

Download free trial

IAR Embedded Workbench for Coldfire - Free trial version

The evaluation license is completely free of charge. It runs for 14 days and allows you to try the integrated development environment and evaluate its efficiency and ease of use.

Restrictions to the 14-day time-limited evaluation

  • A 14-day time limitation.
  • Must not be used for product development or any other kind of commercial use.
  • Source code for runtime libraries is not included.
  • No support for MISRA C.
  • Limited technical support.
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