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<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en">
<head>
<meta charset="utf-8" />
<meta name="generator" content="pandoc" />
<meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=yes" />
<title>Release Notes for STM32WL33x CMSIS</title>
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<link rel="stylesheet" href="_htmresc/mini-st_2020.css" />
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</head>
<body>
<div class="row">
<div class="col-sm-12 col-lg-4">
<center>
<h1 id="release-notes-for">Release Notes for</h1>
<h1 id="stm32wl3xx-cmsis"><mark>STM32WL3xx CMSIS</mark></h1>
<p>Copyright © 2024-2025 STMicroelectronics<br />
</p>
<a href="https://www.st.com" class="logo"><img
src="_htmresc/st_logo_2020.png" alt="ST logo" /></a>
</center>
<h1 id="purpose">Purpose</h1>
<p>This driver provides the CMSIS device for the STM32WL3xx products.
This covers</p>
<ul>
<li>STM32WL33x devices</li>
<li>STM32WL3Rx devices</li>
</ul>
<p>This driver is composed of the description of the registers under
“Include” directory.</p>
<p>Various template files are provided to easily build an application.
They can be adapted to fit applications requirements.</p>
<ul>
<li>Templates/system_stm32wl3x.c contains the initialization code
referred as SystemInit.</li>
<li>Startup files are provided as example for EWARM©.</li>
<li>Linker files are provided as example for EWARM©.</li>
</ul>
</div>
<section id="update-history" class="col-sm-12 col-lg-8">
<h1>Update history</h1>
<div class="collapse">
<input type="checkbox" id="collapse-section6" checked aria-hidden="true">
<label for="collapse-section6" aria-hidden="true"> <strong>V1.3.1 /
20-November-2025</strong> </label>
<div>
<h2 id="main-changes">Main Changes</h2>
<ul>
<li>Added missing I2S support on WL3Rx devices (stm32wl3rx.h)</li>
</ul>
<h2 id="known-limitations">Known Limitations</h2>
<ul>
<li>None</li>
</ul>
<h2 id="development-toolchains-and-compilers">Development Toolchains and
Compilers</h2>
<ul>
<li>IAR Embedded Workbench for ARM (EWARM) toolchain V9.30.1</li>
</ul>
<h2 id="supported-devices-and-boards">Supported Devices and boards</h2>
<ul>
<li>STM32WL3xx devices</li>
</ul>
</div>
</div>
<div class="collapse">
<input type="checkbox" id="collapse-section5" aria-hidden="true">
<label for="collapse-section5" aria-hidden="true"> <strong>V1.3.0 /
29-October-2025</strong> </label>
<div>
<h2 id="main-changes-1">Main Changes</h2>
<ul>
<li>Added support to STM32WL3Rx product line.</li>
<li>[LCSC] LCSC_VER register removed from the accessible register list,
as it is Non-User.</li>
<li>[LCSC] Fixed a typo on an LCSC register name (COMP_CTN ->
COMP_CNT)</li>
<li>[MRSUBG] RSSI_FLT bit #3 renamed to
<code>FREEZE_SYNC_ON_SYNC_OOK_PEAK_DECAY</code></li>
</ul>
<h2 id="known-limitations-1">Known Limitations</h2>
<ul>
<li>None</li>
</ul>
<h2 id="development-toolchains-and-compilers-1">Development Toolchains
and Compilers</h2>
<ul>
<li>IAR Embedded Workbench for ARM (EWARM) toolchain V9.30.1</li>
</ul>
<h2 id="supported-devices-and-boards-1">Supported Devices and
boards</h2>
<ul>
<li>STM32WL3xx devices</li>
</ul>
</div>
</div>
<div class="collapse">
<input type="checkbox" id="collapse-section3" aria-hidden="true">
<label for="collapse-section3" aria-hidden="true"> <strong>V1.2.0 /
04-June-2025</strong> </label>
<div>
<h2 id="main-changes-2">Main Changes</h2>
<ul>
<li>Documentation based on jQuery 1.7.1 removed</li>
</ul>
<h2 id="contents">Contents</h2>
<ul>
<li>Add PULSETRIM bits definition in CMSIS header files</li>
<li>Renamed some interrupt to improve clarity and consistency</li>
<li>Added FQCY_BAND_ID bits definition for RF_INFO_OUT register</li>
</ul>
<h2 id="known-limitations-2">Known Limitations</h2>
<ul>
<li>CMSIS devices files are delivered “as is” and have not been fully
validated</li>
</ul>
<h2 id="development-toolchains-and-compilers-2">Development Toolchains
and Compilers</h2>
<ul>
<li>IAR Embedded Workbench for ARM (EWARM) toolchain V9.30.1</li>
</ul>
<h2 id="supported-devices-and-boards-2">Supported Devices and
boards</h2>
<ul>
<li>STM32WL3xx devices</li>
</ul>
</div>
</div>
<div class="collapse">
<input type="checkbox" id="collapse-section2" aria-hidden="true">
<label for="collapse-section2" aria-hidden="true"> <strong>V1.1.0 /
05-February-2025</strong> </label>
<div>
<h2 id="main-changes-3">Main Changes</h2>
<h3 id="release">Release</h3>
<ul>
<li>Release of CMSIS for STM32WL3xx devices</li>
</ul>
<h2 id="contents-1">Contents</h2>
<ul>
<li>CMSIS devices files for STM32WL3xx</li>
</ul>
<h2 id="known-limitations-3">Known Limitations</h2>
<ul>
<li>CMSIS devices files are delivered “as is” and have not been fully
validated</li>
</ul>
<h2 id="development-toolchains-and-compilers-3">Development Toolchains
and Compilers</h2>
<ul>
<li>IAR Embedded Workbench for ARM (EWARM) toolchain V9.30.1</li>
</ul>
<h2 id="supported-devices-and-boards-3">Supported Devices and
boards</h2>
<ul>
<li>STM32WL3xx devices</li>
</ul>
</div>
</div>
<div class="collapse">
<input type="checkbox" id="collapse-section1" aria-hidden="true">
<label for="collapse-section1" aria-hidden="true"> <strong>V1.0.0 /
30-October-2024</strong> </label>
<div>
<h2 id="main-changes-4">Main Changes</h2>
<h3 id="first-release">First Release</h3>
<ul>
<li>First Official Release of CMSIS for STM32WL33x devices</li>
</ul>
<h2 id="contents-2">Contents</h2>
<ul>
<li>CMSIS devices files for STM32WL33x</li>
</ul>
<h2 id="known-limitations-4">Known Limitations</h2>
<ul>
<li>CMSIS devices files are delivered “as is” and have not been fully
validated</li>
</ul>
<h2 id="development-toolchains-and-compilers-4">Development Toolchains
and Compilers</h2>
<ul>
<li>IAR Embedded Workbench for ARM (EWARM) toolchain V9.30.1</li>
</ul>
<h2 id="supported-devices-and-boards-4">Supported Devices and
boards</h2>
<ul>
<li>STM32WL33x devices</li>
</ul>
</div>
</div>
</section>
</div>
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<p>For complete documentation on STM32 Microcontrollers </mark>, visit:
<span style="font-color: blue;"><a
href="http://www.st.com/stm32">www.st.com/stm32</a></span></p>
<p><em>This release note uses up to date web standards and, for this
reason, should not be opened with Internet Explorer but preferably with
popular browsers such as Google Chrome, Mozilla Firefox, Opera or
Microsoft Edge.</em></p>
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<p><abbr title="Based on template cx566953 version 2.0">Info</abbr></p>
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