保護您的MCU設計復制和反向工程

　　單片機作為主控單元，在每一個可以想象的應用。它們的力量和靈活性使它們成為大多數設計的核心部件。因為它是確保你的設計不能被輕易復制的重要，逆向工程或篡改，現代MCU現在保護您的設計提供了一些不同的選項；良好的理解能力和取舍很重要，以確定哪種方法是最好的一個給定的設計。

　　本文將介紹一些常見的方法來設計保護，如讓你的單片機讀取從外面的世界，使用片上功能驗證代碼的執(zhí)行是未使用的外部元件提供更先進的安全功能。板技術的篡改檢測和可能的“處罰”，可以應用也將被描述。

　　Protecting your design

　　You may not have given much thought to how easy it is to copy your design， but engineers who have experienced design theft will tell you that once it has happened， you never want it to happen again！ For example， if the on-chip code for your MCU design can be read out by a competitor， or even by an unscrupulous contract manufacturer， your entire design can be easily copied and resold — either under a different brand or perhaps even using your brand on the black market. Popular designs that outstrip product capacity are ripe for this type of treatment， and if sellers cannot get product from you they may dip into the black market to satisfy their customer demand.