Microcontroller Development Kit - Version 5.22
This release includes support for Cortex-M33 and Cortex-M23 devices based on the ARMv8-M architecture. For using Cortex-M33 and Cortex-M23 a MDK-Professional Edition is required.

• [ARM Compiler]
• ARM Compiler 5.06u4. Refer to ARMCC 5.06u4 Specific Release Notes for details.
• ARM Compiler 6.6 which supports Cortex-M33 and Cortex-M23 based devices. Refer to ARMCLANG 6.6 Specific Release Notes for details.
• [Software Packs included]
• ARM - CMSIS 5.0.0 supports now the ARMv8-M architecture including TrustZone® for ARMv8-M hardware security extensions and the Cortex-M23 and Cortex-M33 processors.
• Added CMSIS-RTOS V2 API which extends the CMSIS-RTOS v1 API by supporting the ARMv8-M architecture, dynamic object creation, provisions for multi-core systems, and binary compatible interface across ABI compliant compilers.
• Keil - MDK Middleware 7.3.0
• Added debug library variants for Networking, USB, and FileSystem with Event Recorder support.
• FileSystem Component 6.9.0 Enhanced eMMC (embedded Multimedia Card) initialization robustness.
• USB Component 6.9.0
• USB Host Improved USB memory stick enumeration to cope with long timeouts after initial reset.
• USB Device Added capability to disable string for Custom Class interfaces.
• Keil - ARM Compiler Extensions 1.2.0
• Added support for Cortex-M23 and Cortex-M33 processors.
• Added new component Event Recorder.
• [FlexNet Floating Licenses]
• Customers using FlexNet floating licenses should update the FlexNet License Server to version 11.14.0.0. This FlexNet server version is mandatory for upcoming tool releases.
• FlexNet Version 11.14.0.0 License Server tools for Windows are located in the directory ..\Keil\UV4\FlexNet. Refer the FlexLM licensing knowledgebase article for more information.
• [Target debugging]
• Updated: Segger J-Link driver for ARM devices to version 6.10i.
• Updated: P&E Micro driver to version 6.03.
• Updated: NULink driver to version 2.00.6561.
• Added: Event Recorder Support.
• Improved: support for V8M based CPUs.
• Improved: Core peripheral dialogs.
• [uVision updated to V5.22.0.0]
• Added: Event Recorder that shows dynamic execution status and event information which helps to analyze the operation of software components. The required annotations are implemented in debug variants of the MDK middleware.
• Added: Cortex-M23 and Cortex-M33 processor support.
• Enhanced: Core peripheral dialogs (Secure/Non-Secure MPU, SysTick, SAU, NVIC) for ARMv8-M based devices
• Enhanced: Debug status bar displays Debug and Core security status for TrustZone for ARMv8-M enabled devices
• Enhanced: New PC-Lint configuration option to add project target and compiler specific preprocessor symbols