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意法半导体推出面向IoT的首款兼备超低功耗与数据安全的新一代STM32L5微控制器

由 demi 提交于

<ul>
<li><em>在</em><em>Arm TrustZone技术</em><em>基础上搭建</em><em>专有安全</em><em>功能，</em><em>获得PSA 2级认证</em></li>
<li><em>包含</em><em>安全</em><em>启动</em><em>，全硬件隔离，</em><em>加密算法</em><em>加速器</em><em>等功能配置</em></li>
<li><em>最好的</em><em>电源管理</em><em>性能，适合能耗敏感型</em><em>应</em><em>用</em></li>
</ul>

<p><strong>2020年2月14日</strong><span>–<span>&nbsp;</span></span><span>横跨多重电子应用领域的全球领先的半导体供应商意法半导体(STMicroelectronics,简称ST; 纽约证券交易所代码:STM)</span><span><span>&nbsp;</span></span><span>推出了以安全性为亮点的</span><span>STM32L5x2系列超低功耗微控制器</span><span>(MCU)</span><span>，为物联网连接应用提供更好的安全保障。</span></p>

<p><span>STM32L5系列MCU</span><span>的</span><span>时钟频率高达110MHz，基于</span><span>内置</span><span>Arm TrustZone</span><span>®</span><span>硬件安全</span><span>技术</span><span>的Arm</span><span>®<span>&nbsp;</span></span><span>Cortex</span><span>®</span><span>-M33<span>&nbsp;<span>&nbsp;</span></span>32位RISC</span><span>处理器</span><span>内核。可信计算</span><span>技术</span><span>最初是</span><span>为</span><span>台式机</span><span>、</span><span>移动设备和通信基础设施</span><span>等</span><span>设备</span><span>开发</span><span>设计，</span><span>能够验证联网设备的合法性，为数据保护功能</span><span>和敏感代码（加密</span><span>模块</span><span>和密钥存储）创建</span><span>一个</span><span>受保护的执行环境</span><span>，</span><span>阻止</span><span>任何</span><span>企图破坏设备或软件的</span><span>行为；非可信</span><span>代码运行</span><span>在另一</span><span>个独立</span><span>的</span><span>执行环境。</span></p>

<p><span>在此基础上，</span><span>意法半导体</span><span>增添了</span><span>可以</span><span>在TrustZone</span><span>隔离</span><span>保护</span><span>区内随意增加</span><span>或</span><span>删除</span><span>每个I/O</span><span>引脚、</span><span>外设</span><span>或者闪存</span><span>或SRAM</span><span>存储区的功能</span><span>，</span><span>将</span><span>敏感的工作</span><span>任务</span><span>完全隔离，最大</span><span>限度地提高设备的</span><span>安全性。此外，意法半导体</span><span>实现的</span><span>TrustZone</span><span>还</span><span>支持安全</span><span>启动、内部</span><span>SRAM和</span><span>闪存专用</span><span>读写保护</span><span>，</span><span>以及加密</span><span>算法</span><span>加速</span><span>技术</span><span>，包括AES 128/256位密钥硬件加速</span><span>和</span><span>公钥加速(PKA)</span><span>，以及</span><span>保护</span><span>外存</span><span>代码或数据</span><span>的</span><span>AES-128</span><span>即时</span><span>解密(OTFDEC)。STM32L5还支持主动篡改检测和安全固件安装。</span><span>出于对安全性的关注，<span>&nbsp;</span></span><a href="https://www.st.com/en/microcontrollers-microprocessors/stm32l5x2.html?i…;已通过</span><a href="https://www.psacertified.org/"><span>PSA<span>&nbsp;</span></span></a><…。</span></p>

<p><span>Arm</span><span>汽车和物联网业务线高级总监Thomas Ensergueix<span>&nbsp;</span></span><span>表示：</span><span>“随着物联网和嵌入式设备</span><span>不断提高</span><span>智能和功能，安全性必须从头开始构建</span><span>。</span><span>STM32L5系列</span><span>让</span><span>开发</span><span>者更轻松地开发基于</span><span>Arm Cortex-M33处理器</span><span>的</span><span>PSA认证</span><span>的</span><span>可信设备，</span><span>为开发</span><span>消费</span><span>类、</span><span>工业</span><span>级等</span><span>各种设备</span><span>提供一个可靠</span><span>安全的</span><span>平台</span><span>。”</span></p>

<p><span>除了这</span><span>些灵活的信息</span><span>保护和</span><span>产品</span><span>设计外，</span><span>意法半导体</span><span>还</span><span>在新产品中加入</span><span>了其专有的超低功耗</span><span>技术</span><span>，</span><span>例如，</span><span>自适应电压</span><span>调节、</span><span>实时加速</span><span>、功率</span><span>门控和多种低功耗工作模式</span><span>，</span><span>从而使</span><span>微控制器</span><span>无论是纽扣电池供电，还是通过能量收集供电</span><span>，都</span><span>能</span><span>实现</span><span>高性能</span><span>和长续航</span><span>时间。此外，当VDD电压</span><span>足够</span><span>高时，高效开关式降压调节器可以实时开启或关闭，以改善低功耗性能。最终</span><a href="https://www.eembc.org/ulpmark/"><span>ULPMark</span></a><span>测试成绩非常出色：370 ULPMark-CoreProfile和54 ULPMark-PeripheralProfile(1.8V工作电压)。ULP</span><span>?6?7?6?7</span><span>Mark是EEMBC根据现实世界基准测试开发的超低功耗微控制器能效关键指标。</span></p>

<p><span>意法半导体微控制器事业部总经理Ricardo De Sa Earp表示：“ST是MCU市场的领导者，将智慧城市、智</span><span>能</span><span>建筑和智</span><span>能</span><span>工业等领域列为公司战略重点。</span><span>我们</span><span>认识到</span><span>，一系列集</span><span>世界一流的超低功耗与业界领先的</span><span>数据安全于一身</span><span>的MCU</span><span>，对</span><span>保护关键任务应用和边缘</span><span>计算</span><span>数据</span><span>的重要性</span><span>。</span><span>传承</span><span>ST在超低功耗设计</span><span>与制造工艺方面的</span><span>专业知识，</span><span>在</span><span>Arm TrustZone坚实基础之上</span><span>，加入</span><span>我们的</span><span>数据</span><span>安全保护</span><span>技术，依托业界领先</span><span>的STM32</span><span>开发</span><span>生态系统，STM32L5x2 MCU</span><span>是表</span><span>计</span><span>、</span><span>健康（人或机器）监</span><span>测、</span><span>移动销售</span><span>终端等</span><span>需要可靠性和安全性</span><span>的</span><span>工业IoT</span><span>应用的理想选择。</span><span>”</span></p>

<p><a href="https://www.st.com/en/microcontrollers-microprocessors/stm32l5x2.html?i… MCU</span></a><span>配备</span><span>512 KB双区闪存，允许读写同时操作</span><span>，方便</span><span>设备管理，并支持错误校正码(ECC)诊断</span><span>，提高数据</span><span>安全性</span><span>；</span><span>还</span><span>配备</span><span>256KB SRAM，</span><span>支持</span><span>高速</span><span>外部存储器</span><span>，包括单</span><span>线、</span><span>双</span><span>线、</span><span>四</span><span>线</span><span>或八</span><span>线</span><span>SPI和Hyperbus<span>&nbsp;</span></span><span>闪存</span><span>或SRAM，</span><span>提供</span><span>SRAM</span><span>、</span><span>PSRAM</span><span>、</span><span>NOR</span><span>、</span><span>NAND或FRAM</span><span>存储器</span><span>接口。</span></p>

<p><span>STM32L5x2的数字外设包括带专用电源的USB Full Speed</span><span>控制器</span><span>，即使系统</span><span>电源是</span><span>1.8V，客户</span><span>仍然</span><span>可以</span><span>使用</span><span>USB</span><span>传输数据</span><span>，</span><span>还包括</span><span>符合USB Type-C 1.2版和USB Power Delivery 3.0版规范的UCPD控制器。智能模拟功能包括最先进的模数转换器(ADC)</span><span>、</span><span>两个功率门控数模转换器(DAC)</span><span>、</span><span>两个超低功耗比较器</span><span>和</span><span>两个运算放大器</span><span>，其中</span><span>两个运算放大器</span><span>有</span><span>外部或内部</span><span>电压</span><span>跟随</span><span>电路</span><span>和可编程增益放大器(PGA)功能。</span></p>

<p><span>STM32L5系列</span><span>属于市场领先的</span><span>STM32<span>&nbsp;</span></span><span>MCU产品家族</span><span>，</span><span>全面支持</span><span>STM32</span><span>的开发</span><span>生态系统，并具有自己的</span><a href="https://www.st.com/en/embedded-software/stm32cubel5.html?icmp=tt14047_g…;一站式软件包，其中包括硬件抽象层和</span><span>底层</span><span>驱动程序</span><span>、</span><span>FreeRTOS</span><span>、</span><span>Trusted Firmware-M(TF-M)</span><span>、</span><span>安全启动和安全固件更新(SBSFU)</span><span>、</span><span>USB-PD设备驱动程序</span><span>、</span><span>MbedTLS和MbedCrypto</span><span>、</span><span>FatFS文件系统</span><span>，</span><span>以及触摸感应驱动程序。此外，STM32CubeL5还有300多个项目示例，可运行在</span><a href="https://www.st.com/en/evaluation-tools/stm32l552e-ev.html?icmp=tt14047_…;评估板、</span><a href="https://www.st.com/en/evaluation-tools/stm32l562e-dk.html?icmp=tt14047_…;探索套件和</span><a href="https://www.st.com/en/evaluation-tools/nucleo-l552ze-q.html?icmp=tt1404…;开发板上。这些项目编译可以使用ArmKeil</span><span>®</span><span>开发工具、IAR或STM32CubeIDE工具包，项目输出包括一个STM32CubeMX配置文件，让用户能够轻松自定义设置，更新代码。</span></p>

<p><span>STM32L5x2 MCU现已</span><span>全部量</span><span>产，</span><span>目前在售产品有两个版本：</span><span>消费和商用标准温度</span><span>版</span><span>(-40°C</span><span>到</span><span><span>&nbsp;</span>+85°C)</span><span>和极端环境用高温版(</span><span>-40°C</span><span>到</span><span>+ 125°C)。</span></p>

<p><span>点击<span>&nbsp;</span></span><a href="https://blog.st.com/stm32l5-trustzone-security/"><span>https://blog.st…。</span></p>

<p><strong>关于意法半导体</strong></p>

<p><span>意法半导体（STMicroelectronics; ST）是全球领先的半导体公司，提供与日常生活息息相关的智能的、高能效的产品及解决方案。意法半导体的产品无处不在，致力于与客户共同努力实现智能驾驶、智能工厂、智慧城市和智能家居，以及下一代移动和物联网产品。享受科技、享受生活，意法半导体主张科技引领智能生活（life.augmented）的理念。意法半导体2019年净收入95.6亿美元，在全球拥有10万余客户。详情请浏览意法半导体公司网站：</span><a href="http://www.st.com/"><span>www.st.com</span></a></p&gt;