32-bit MCU SDK 6.4.7.0 GA

Overview

The 32-bit MCU SDK provides sample applications for EFM32 and EZR32 development kits.

SDK Versions Covered:

• 6.4.7.0 released January 15, 2025 (underlying platform changes only)
• 6.4.6.0 released July 3, 2024 (underlying platform changes only)
• 6.4.5.0 released January 24, 2024 (underlying platform changes only)
• 6.4.4.0 released August 16, 2023 (underlying platform changes only)
• 6.4.3.0 released May 3, 2023 (underlying platform changes only)
• 6.4.2.0 released March 8, 2023 (underlying platform changes only)
• 6.4.1.0 released February 1, 2023 (underlying platform changes only)
• 6.4.0.0 released December 14, 2022

Key Features

• Added support for new OPNS

Compatibility and Use Notices

For information about security updates and notices, refer to the Security chapter of the Gecko Platform Release notes or the Silicon Labs Release Notes page. Silicon Labs recommends subscribing to Security Advisories for up-to-date information. For instructions or if new to the 32-bit MCU SDK, see "Using This Release".

Compatible Compilers:

• IAR Embedded Workbench for ARM (IAR-EWARM) version 9.20.40
• GCC (The GNU Compiler Collection) version 10.3-2021.10 (provided with Simplicity Studio)

1 New Items

New in release 6.4.0.0

Added support for the following new OPNs:

• BRD2200C
• BRD2201B
• BRD2400B
• BRD2102B

2 Improvements

None

3 Fixed Issues

None

4 Known Issues in the Current Release

None

5 Deprecated Items

None

6 Removed Items

None

7 Using This Release

The 32-bit MCU SDK v 64.x is installed as part of Gecko SDK (GSDK) 4.2.x, a suite of Silicon Labs SDKs. To get started quickly, install Simplicity Studio 5, which sets up the development environment and guides through GSDK installation. Simplicity Studio 5 provides all necessary tools for IoT product development with Silicon Labs devices, including a resource and project launcher, software configuration tools, a full IDE with GNU toolchain, and analysis tools. Installation instructions are available in the online Simplicity Studio 5 User's Guide.

Alternatively, Gecko SDK can be installed manually by downloading or cloning from GitHub: https://github.com/SiliconLabs/gecko_sdk.

This release includes:

• EFM32 and EZR32 sample applications

This SDK depends on Gecko Platform, which provides functionality for protocol plugins and APIs through drivers and other lower-layer features interacting directly with Silicon Labs chips and modules. Gecko Platform components include EMLIB, EMDRV, RAIL Library, NVM3, and mbedTLS. Gecko Platform release notes are available via Simplicity Studio's Launcher Perspective.

The GSDK default install location has changed with Simplicity Studio 5.3:

• Windows: C:\Users\<NAME>\SimplicityStudio\SDKs\gecko_sdk
• MacOS: /Users/<NAME>/SimplicityStudio/SDKs/gecko_sdk

7.1 Security Information

Security Advisories

To subscribe to Security Advisories, log in to the Silicon Labs customer portal, select Account Home, click HOME, and then click the Manage Notifications tile. Ensure 'Software/Security Advisory Notices & Product Change Notices (PCNs)' is checked and that you are subscribed for your platform and protocol. Click Save to apply changes.

The user interface for managing notifications shows options to select product categories like '32-bit MCUs' and specific notification types like 'Software/Security Advisory Notices & Product Change Notices (PCNs)'.

7.2 Support

Development Kit customers are eligible for training and technical support. For information on EFM32 Microcontroller products and services, and to sign up for product support, visit the Silicon Laboratories website at www.silabs.com/products/mcu/32-bit.

Silicon Laboratories support can be contacted at www.silabs.com/support.

Simplicity Studio

Simplicity Studio offers one-click access to MCU and wireless tools, documentation, software, and source code libraries. It is available for Windows, Mac, and Linux.

Explore Silicon Labs' offerings:

• IoT Portfolio: www.silabs.com/IoT
• SW/HW: www.silabs.com/simplicity
• Quality: www.silabs.com/quality
• Support & Community: www.silabs.com/community

Disclaimer

Silicon Labs provides documentation for its products to assist system and software implementers. Characterization data, available modules, peripherals, memory sizes, and addresses are specific to each device, and typical parameters may vary. Application examples are for illustrative purposes only. Silicon Labs reserves the right to make changes to product information, specifications, and descriptions without notice and does not warrant their accuracy or completeness. Product firmware may be updated for security or reliability reasons without altering specifications or performance. Silicon Labs is not liable for consequences arising from the use of this document's information. This document does not grant any license for integrated circuit design or fabrication. Products are not authorized for use in FDA Class III devices, applications requiring FDA premarket approval, or Life Support Systems without written consent. Life Support Systems are defined as products or systems intended to support life or health, where failure could result in significant injury or death. Silicon Labs products are not authorized for military applications or for use in weapons of mass destruction (including nuclear, biological, chemical weapons, or missiles). Silicon Labs disclaims all warranties and is not responsible for injuries or damages related to unauthorized product applications.

Trademark Information

Silicon Laboratories Inc.®, Silicon Laboratories®, Silicon Labs®, SiLabs®, and the Silicon Labs logo®, Bluegiga®, Bluegiga Logo®, EFM®, EFM32®, EFR, Ember®, Energy Micro, Energy Micro logo and combinations thereof, "the world's most energy friendly microcontrollers", Redpine Signals®, WiSeConnect, n-Link, EZLink®, EZRadio®, EZRadioPRO®, Gecko®, Gecko OS, Gecko OS Studio, Precision32®, Simplicity Studio®, Telegesis, the Telegesis Logo®, USBXpress®, Zentri, the Zentri logo and Zentri DMS, Z-Wave®, and others are trademarks or registered trademarks of Silicon Labs. ARM, CORTEX, Cortex-M3 and THUMB are trademarks or registered trademarks of ARM Holdings. Keil is a registered trademark of ARM Limited. Wi-Fi is a registered trademark of the Wi-Fi Alliance. All other products or brand names mentioned herein are trademarks of their respective holders.