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ARM® Keil® MDK è la piattaforma software di riferimento per lo sviluppo di soluzioni basate su microcontrollori ARM Cortex®. Per dispositivi basati su architettura Cortex-M, la nuova versione MDK-Plus dispone di un middleware completo per applicazioni che necessitano di gestire File System, Grafica, connettività TCP/IP o dispositivi USB.


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MDK Microcontroller Development Kit

ARM® Keil® MDK is the most comprehensive software development solution for Arm®-based microcontrollers and includes all components that you need to create, build, and debug embedded applications.

MDK-Core is based on µVision (Windows only) with leading support for Cortex-M devices including the new Armv8-M architecture.MDK includes two Arm C/C++ Compilers with assembler, linker, and highly optimize run-time libraries that are tailored for optimum code size and performance.

Software Packs may be added any time to MDK-Core making new device support and middleware updates independent from the toolchain. They contain device support, CMSIS libraries, middleware, board support, code templates, and example projects.

The IPv4/IPv6 networking communication stack is extended with Mbed™ TLS to enable secure connections via the Internet.


Product Components

Compare MDK Editions  

Feature MDK Edition
  All-in-one solution
including Middleware
and Cortex-A
Supports all microcontroller cores, Heterogeneous deVices and Middleware Supports selected
Free with code size limit:
32 KBytes
IDE with Editor, Pack Installer V V V V
Debugger V V V
32 KBytes
Fixed Virtual Platforms Simulation Models
V x x x
ARM® C/C++ Compiler
Compiler, Linker, Libraries, and Utilities V V V
32 KBytes
Functional Safety Support and Extended Maintenance V x x x
DeVice Support
ARM Cortex-M0/M0+/M3/M4/M7 V V V V
ARM Cortex-M23/M33
Non-secure only
V V V x
ARM Cortex-M23/M33
Secure and non-secure
V V x x
ARMV8-M Architecture Models
including FastModel
V x x x
ARM SecurCore® V V x x
ARM7, ARM9, ARM Cortex-R4 V V x x
RTOS and Middleware
CMSIS-RTOS RTX (with full source code) V V V V
IPV4 Network, USB DeVice, File System, Graphics
V V x x
IPV6 Network, USB Host, mbed TLS
V x x x
Debug and Trace Support
ULINK Debug Adapters
Streaming Instruction Trace,
Embedded Trace Buffer, Micro Trace Buffer
AdVanced Analysis Tools
Code CoVerage, Performance Analyzer,
Execution Profiler, Logic Analyzer
Support and Maintenance
Updates and Technical Support Included
12 Months
12 Months
12 Months

License Types

A node-locked license allows using MDK by exactly one person on a maximum of two computers (single-user). No network connection required.

FlexLM Floating:
A FlexLM License allows developers to use MDK on multiple computers. A network connection to check out a FlexLM license is required.


MDK receives MadeForSTM32 label

Arm Keil MDK has received the label "MadeForSTM32" by STMicroelectronics. While MDK always had outstanding support for STM32-based devices.

Arm Keil MDK supports more than 1700 devices from STMicroelectronics and offers a free-to-use MDK for STM32F0, STM32G0, and STM32L0 that helps their mutual customers to develop their embedded application faster. The excellent support of STM32CubeMX helps to set up your device using graphical tools from STMicroelectronics and exchange this data with Arm Keil MDK to be able to use our advanced debug features to minimize development time.

The Functional Safety Run-Time Systems works seamlessly with STMicroelectronics' X-CUBE-STL. Download their application note 326 to learn how to use both components together in your functional safety application.


System Requirements

All MDK editions are designed for 32-bit and 64-bit variants of Microsoft Windows and have the same system requirements.
Verify that your computer at least meets the minimum system requirements before you install any Keil software development product.


Minimum Hardware Requirements

  • 1 GHz processor
  • 1 GB of system memory (RAM)
  • 2 GB of available disk space

Recommended Hardware Requirements

  • 2+ GHz processor
  • 4 GB of system memory (RAM)
  • 5 GB of available disk space
  • 2 Mpbs or higher Internet connection for software activation, product updates and online services like the PackInstaller

Supported Operating Systems

32-bit and 64-bit variants of Microsoft Windows are supported:

  • Windows 10 Home
  • Windows 10 Pro
  • Windows 10 Enterprise
  • Windows 10 Education
  • Windows 8.1
  • Windows 8.1 Pro
  • Windows 8.1 Enterprise
  • Windows 8
  • Windows 8 Pro
  • Windows 8 Enterprise

Software will be tested against the latest revision supplied by Microsoft. Beta Releases or Release Candidate versions of Windows are not recommended for productive use.


Support for 32-bit Microsoft Windows will be deprecated in Q3/2018. Please make sure to switch to a 64-bit Microsoft Windows operating system before then.