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GENERAL: Product Details of MDK-ARM Editions

Information in this knowledgebase article applies to:



I am aware of the different product features, but can you provide further product details to each MDK-ARM edition?


Compare the MDK Editions for supported product features.

Keil today offers product versions for MDK-ARM V5, but former MDK-ARM V4 projects still are supported.

Registered users can access supported product versions and release notes to each edition.

Current and previous MDK-ARM releases can be found here.

Specific product details:

Current MDK editions

  • MDK Lite

  • is free. After installation, MDK-ARM defaults to MDK Lite.
  • is restricted to 32 KByte code size, among other restrictions, and
  • has a built-in, 7-day trial of MDK-Professional edition. This is one-time use per machine, and only works with the latest MDK-ARM version.
  • Contact your local distributor for a limited 30 days limited full-featured MDK-ARM Professional license.
  • MDK Professional

  • 1st release with MDK-ARM V4.20 (March 2011).
  • MDK releases before V4.20 cannot be used with this license.
  • MDK Plus

  • 1st release with MDK-ARM V5.20 (August 2016)
  • replaces the former MDK Standard edition
  • Customers owning a MDK Standard edition license with a support end after August 2016 can use this MDK Plus edition
  • MDK Essential

  • 1st release with MDK-ARM V5.24 (June 2017)
  • supersedes the MDK-ARM Cortex-M edition

Previous MDK editions

  • MDK Cortex-M

  • got replaced by MDK-ARM Essential (June 2017)
  • MDK Standard

  • MDK-Standard is not available for purchase anymore
  • got replaced by MDK-Plus with V5.20 (August 2016)
  • MDK Basic

  • MDK-Basic is not available for purchase anymore


Last Reviewed: Thursday, January 18, 2018

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