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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 STM32 External Memory Manager</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="stm32_extmem_manager"><mark>STM32_ExtMem_Manager</mark></h1>
<p>Copyright © 2024 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>The source code delivered is a middleware to manage different types
of external memory.</p>
<p>The STM32_ExtMem_Manager component provides SW implementation that
facilitates external memories integration.</p>
<p>It supports Serial Flash Discovery Parameters (JEDEC SFDP, aligned
with JEDEC standard JESD216F.02) to facilitate serial NOR Flash
integration.</p>
<p>Thanks to STM32_ExtMem_Manager’s high scalability, support of
multiple external memory types(NOR, RAM, SD) and interface types (XSPI,
SDMMC, FMC) becomes easier.</p>
<figure>
<img src="_htmresc/stm32_ExtMem_Manager_archi.bmp"
alt="STM32_ExtMem_Manager Architecture" />
<figcaption aria-hidden="true">STM32_ExtMem_Manager
Architecture</figcaption>
</figure>
<p><br />
</p>
<p>Here is the list of references to user documents:</p>
<ul>
<li><a
href="https://wiki.st.com/stm32mcu/wiki/Introduction_to_External_memory_Manager">WIKI
Page</a>: Introduction to External Memory Manager</li>
<li><a
href="https://wiki.st.com/stm32mcu/wiki/Getting_started_with_External_memory_Manager_and_External_memory_loader">WIKI
Page</a>: Getting started with External Memory Manager</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>V1.5.0 /
10-Sep-2025</strong></label>
<div>
<h2 id="release-update">Release update</h2>
<ul>
<li>Solve EMM Initialisation issues with Macronix MX25L25645G QSPI
memory</li>
<li>Correct number of dummy cycles used in 1S1S1S reading on Octal
MX66</li>
<li>Check number of dummy cycles to be used in Octal mode for READ SFDP
command</li>
<li>Adapt the memory interface frequency according to max requested
frequency as defined in configuration table in Octal mode</li>
<li>Correct initialisation of nb of dummy cycles in some cases of 4
lines configuration</li>
<li>Handle case where MaxFreq is undefined in NOR SFDP
extmem_list_config</li>
<li>Codespell and MCUAstyle corrections</li>
<li>Add DCache management in EXTMEM_DRIVER_NOR_SFDP_WriteInMappedMode()
in Nor Flash driver</li>
<li>Addition of a new EMM driver type : CUSTOM driver allows end user to
handle memories thanks to a configuration file containing all required
memory characteristics, register configuration step descriptions, …
Examples of configuration files used with this CUSTOM driver are
provided.</li>
<li>Refactoring of code comments</li>
</ul>
<h2 id="known-limitations">Known limitations</h2>
<ul>
<li>See supported memories</li>
</ul>
<h2 id="supported-memories">Supported memories</h2>
<ul>
<li>List of the tested memories (per selected EMM driver type)
<ul>
<li>NOR_SFDP :
<ul>
<li>MACRONIX MX66UW1G45G, MX25UW25645G, MX25LM51245G</li>
<li>WINBOND W25Q64JV</li>
<li>ISSI IS25WP032D, IS25LP032D</li>
<li>GIGADEVICES GD25LX512ME, GD55LX01GE</li>
</ul></li>
<li>CUSTOM (configuration files provided) :
<ul>
<li>MACRONIX MX66UW1G45G, MX25UW25645G, MX25UM51245G</li>
<li>ISSI IS25WP032D</li>
<li>GIGADEVICES GD25LX512ME</li>
<li>APMEMORY APS256XXN-OBR-BG</li>
</ul></li>
<li>PSRAM: APMEMORY APS256XXN-OBR-BG</li>
<li>SDCARD: Micro SD kingstone 1GB</li>
</ul></li>
</ul>
<h2 id="supported-devices-and-boards">Supported Devices and boards</h2>
<ul>
<li>Not applicable</li>
</ul>
<h2 id="backward-compatibility">Backward Compatibility</h2>
<ul>
<li>Not applicable</li>
</ul>
<h2 id="dependencies">Dependencies</h2>
<ul>
<li>Not applicable</li>
</ul>
</div>
</div>
<div class="collapse">
<input type="checkbox" id="collapse-section5" aria-hidden="true">
<label for="collapse-section5" aria-hidden="true"><strong>V1.4.0 /
27-May-2025</strong></label>
<div>
<h2 id="release-update-1">Release update</h2>
<ul>
<li>Update of Nor SFDP friver for support of GigaDevices memories
(GD25LX512ME, GD55LX01GE)</li>
<li>Update of Nor SFDP friver for support of ISSI Quad memories
(IS25WP032D)</li>
<li>Correction in QSPI enabling procedure for 0x04 method (QE is bit 1
of status register 2)</li>
<li>Correction of typographical errors</li>
<li>WIP flag check executed just after DTR octal mode entry should be
executed in Octal mode</li>
</ul>
<h2 id="known-limitations-1">Known limitations</h2>
<ul>
<li>See supported memories</li>
</ul>
<h2 id="supported-memories-1">Supported memories</h2>
<ul>
<li>List of the tested memories
<ul>
<li>NOR_SFDP :
<ul>
<li>MACRONIX MX66UW1G45G, MX25UW25645G, MX25LM51245G</li>
<li>WINBOND W25Q64JV</li>
<li>ISSI IS25WP032D, IS25LP032D</li>
<li>GIGADEVICES GD25LX512ME, GD55LX01GE</li>
</ul></li>
<li>PSRAM: APMEMORY APS256XXN</li>
<li>SDCARD: micro SD kingstone 1GB</li>
</ul></li>
</ul>
<h2 id="supported-devices-and-boards-1">Supported Devices and
boards</h2>
<ul>
<li>Not applicable</li>
</ul>
<h2 id="backward-compatibility-1">Backward Compatibility</h2>
<ul>
<li>Not applicable</li>
</ul>
<h2 id="dependencies-1">Dependencies</h2>
<ul>
<li>Not applicable</li>
</ul>
</div>
</div>
<div class="collapse">
<input type="checkbox" id="collapse-section4" aria-hidden="true">
<label for="collapse-section4" aria-hidden="true"><strong>V1.3.0 /
17-December-2024</strong></label>
<div>
<h2 id="release-update-2">Release update</h2>
<ul>
<li>doc : code comment update</li>
</ul>
<h2 id="known-limitations-2">Known limitations</h2>
<ul>
<li>See supported memories</li>
</ul>
<h2 id="supported-memories-2">Supported memories</h2>
<ul>
<li>List of the tested memories
<ul>
<li>NOR_SFDP :
<ul>
<li>MACRONIX MX66UW1G45G, MX25UW25645G, MX25LM51245G</li>
<li>WINBOND W25Q64JV</li>
</ul></li>
<li>PSRAM: APMEMORY APS256XXN</li>
<li>SDCARD: micro SD kingstone 1GB</li>
</ul></li>
</ul>
<h2 id="supported-devices-and-boards-2">Supported Devices and
boards</h2>
<ul>
<li>Not applicable</li>
</ul>
<h2 id="backward-compatibility-2">Backward Compatibility</h2>
<ul>
<li>Not applicable</li>
</ul>
<h2 id="dependencies-2">Dependencies</h2>
<ul>
<li>Not applicable</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 /
09-October-2024</strong></label>
<div>
<h2 id="release-update-3">Release update</h2>
<ul>
<li>fix : jump issue without compiler optim</li>
<li>fix : performance issue detected in security context</li>
</ul>
<h2 id="known-limitations-3">Known limitations</h2>
<ul>
<li>See supported memories</li>
</ul>
<h2 id="supported-memories-3">Supported memories</h2>
<ul>
<li>List of the tested memories
<ul>
<li>NOR_SFDP :
<ul>
<li>MACRONIX MX66UW1G45G, MX25UW25645G, MX25LM51245G</li>
<li>WINBOND W25Q64JV</li>
</ul></li>
<li>PSRAM: APMEMORY APS256XXN</li>
<li>SDCARD: micro SD kingstone 1GB</li>
</ul></li>
</ul>
<h2 id="supported-devices-and-boards-3">Supported Devices and
boards</h2>
<ul>
<li>Not applicable</li>
</ul>
<h2 id="backward-compatibility-3">Backward Compatibility</h2>
<ul>
<li>Not applicable</li>
</ul>
<h2 id="dependencies-3">Dependencies</h2>
<ul>
<li>Not applicable</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 /
29-May-2024</strong></label>
<div>
<h2 id="release-update-4">Release update</h2>
<ul>
<li>NOR_SFDP :
<ul>
<li>update for memory presenting only short basic JEDEC table</li>
<li>update to add frequency upgrade when JEDEC doesn’t provide frequency
information</li>
<li>fix issue detected during octal activation requiring adding WIP
operations</li>
</ul></li>
<li>SAL_XSPI :
<ul>
<li>update to support DMA transfer</li>
</ul></li>
</ul>
<h2 id="known-limitations-4">Known limitations</h2>
<ul>
<li>See supported memories</li>
</ul>
<h2 id="supported-memories-4">Supported memories</h2>
<ul>
<li>List of the tested memories
<ul>
<li>NOR_SFDP :
<ul>
<li>MACRONIX MX66UW1G45G, MX25UW25645G, MX25LM51245G</li>
<li>WINBOND W25Q64JV</li>
</ul></li>
<li>PSRAM: APMEMORY APS256XXN</li>
<li>SDCARD: micro SD kingstone 1GB</li>
</ul></li>
</ul>
<h2 id="supported-devices-and-boards-4">Supported Devices and
boards</h2>
<ul>
<li>Not applicable</li>
</ul>
<h2 id="backward-compatibility-4">Backward Compatibility</h2>
<ul>
<li>Not applicable</li>
</ul>
<h2 id="dependencies-4">Dependencies</h2>
<ul>
<li>Not applicable</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 /
28-February-2024</strong></label>
<div>
<h2 id="first-release">First release</h2>
<p>First official release of STM32_ExtMem_Manager</p>
<h2 id="known-limitations-5">Known limitations</h2>
<ul>
<li>List of the tested memories
<ul>
<li>NOR_SFDP : MACRONIX MX66UW1G45G, MX25UW25645G</li>
<li>PSRAM: APMEMORY APS256XXN</li>
<li>SDCARD: micro SD kingstone 1GB</li>
</ul></li>
</ul>
<h2 id="supported-devices-and-boards-5">Supported Devices and
boards</h2>
<ul>
<li>Not applicable</li>
</ul>
<h2 id="backward-compatibility-5">Backward Compatibility</h2>
<ul>
<li>Not applicable</li>
</ul>
<h2 id="dependencies-5">Dependencies</h2>
<ul>
<li>Not applicable</li>
</ul>
</div>
</div>
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