Keil MDK-ARM 5.34 with DFP (build 20210319)

The Keil MDK development team is pleased to announce the availability of Keil MDK-ARM 5.34 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.

What's new in MDK 5.34 - Release Date: 12th March, 2021

[µVision updated to V5.34.0.0]
- Added: Update interval for the generation of Source Browser Information for Arm Compiler 6 based projects is globally configurable. Updates can also be triggered manually via the context menu and/or keyboard shortcut.
- Corrected: Editor is unable to display Russian or Japanese encoded characters. Updated to Scintilla V4.4.6

[Arm Compiler included]
- Arm Compiler 5 version 5.06u7
- Arm Compiler 6 version 6.16
Important Note: This version is correcting how volatile bit-fields, typically used for peripheral register accesses, are handled by the compiler.

[Target debugging]
- Nuvoton NU-Link updated debug driver to version 3.05.7174.


MDK helps you to create embedded applications for ARM Cortex-M processor-based devices. MDK is a powerful, yet easy to learn and use development system. It consists of MDK-Core and software packs, which can be downloaded and installed based on the requirements of your application.

The MDK Tools include all the components that you need to create, build, and debug an embedded application for ARM based microcontroller devices. MDK-Core consists of the genuine Keil µVision IDE and debugger with leading support for Cortex-M processor-based microcontroller devices including the new ARMv8-M architecture. DS-MDK contains the Eclipse-based DS-5 IDE and debugger and offers multi-processor support for devices based on 32-bit Cortex-A processors or hybrid systems with 32-bit Cortex-A and Cortex-M processors. MDK includes two ARM C/C++ Compilers with assembler, linker, and highly optimize run-time libraries tailored for optimum code size and performance:

ARM Compiler version 5 is the reference C/C++ compiler available with a TÜV certified qualification kit for safety applications, as well as long-term support and maintenance.

ARM Compiler version 6 is based on the innovative LLVM technology and supports the latest C language standards including C++11 and C++14. It offers the smallest size and highest performance for Cortex-M targets.

Software packs contain device support, CMSIS libraries, middleware, board support, code templates, and example projects. They may be added any time to MDK-Core or DS-MDK, making new device support and middleware updates independent from the toolchain. The IDE manages the provided software components that are available for the application as building blocks.

You will learn how easy it is to get started with MDK Version 5 to efficiently develop embedded applications for microcontrollers based on ARM Cortex-M processors series.


Keil was founded in 1985 to market add-on products for the development tools provided by many of the silicon vendors. It soon became evident that there was a void in the marketplace that must be filled by quality software development tools. It was then that Keil implemented the first C compiler designed from the ground-up specifically for the 8051 microcontroller.

In October 2005, Keil (Keil Elektronik GmbH in Munich, Germany, and Keil Software, Inc. in Richardson, Texas) was acquired by ARM.

The Keil products from ARM include C/C++ compilers, debuggers, integrated development and simulation environments, RTOS and middleware libraries, and evaluation boards for ARM, Cortex-M, Cortex-R4, 8051, C166, and 251 processor families. Since the acquisition, ARM has continued the development and support of Keil products for existing 8051, 251, and C166 markets.

Product: Keil MDK-ARM
Version: 5.34 with MDK5 Software Packs DFP (build 20210319)
Supported Architectures: 32bit / 64bit
Website Home Page : www.keil.com
Language: english
System Requirements: PC *
Size: 1.3 Gb