MCU厂商为关键任务IP提供保护

　　MCU厂商为关键任务IP提供保护

　　许多设计师仍然认为，他们可以使“相当好”的IP安全，禁止调试访问MCU。在开发周期后，调试路径（JTAG或社署）被阻止使用用户可配置设置。然而，这种方法对那些想要逆向设计产品的技术熟练的盗版盗版者来说并没有太大的威慑力。

　　简单地阻止调试访问不阻止读取包含关键软件IP的位置的设备内存。虽然有几种方法来解决这个问题，其中一个最有效的是隔离关键IP通过创建内部硬件和软件进入壁垒。

　　然而，在描述两种解决方案之前，值得列举的是使嵌入式空间变得越来越危险的事态发展。

　　Appliances such as dishwashers， refrigerators， and home-automation systems are using more and more powerful MCUs to implement advanced diagnostic and convenience features. The software IP that implements these features costs time and money to develop， which means that effective steps are needed to prevent theft by competitors.

　　Protecting product IP is much easier when the appliance or device operates more or less autonomously. The “big data” trend – collecting terabytes of information that can be mined for marketing purposes – has given embedded systems the critical task of originating that data and transporting it over Internet of Things （IoT） connections. This major shift in interconnectedness adds to the imperative for protection.