微控制器針對每個應(yīng)用程序的性能路線圖

　　對性能的需求是直觀的，特別是在開發(fā)嵌入式應(yīng)用程序時。大多數(shù)設(shè)計團隊面臨的挑戰(zhàn)是知道有多少性能是足夠的，本質(zhì)上依賴于兩件事情：所需的功能，以及如何實現(xiàn)。雖然實現(xiàn)主要是在軟件中，微控制器的價值的一部分是外圍設(shè)備做了大量的重載方面的接口。然而，操縱這些接口提供的信息正給核心本身增加壓力和壓力。

　　更大的性能是以成本為代價的，但由于微控制器往往是建立在行之有效的工藝節(jié)點，成本往往是衡量系統(tǒng)級的權(quán)力，而不是組件級美元和美分。

　　選擇最佳的微控制器為一個給定的應(yīng)用程序可以說是變得更加困難的廣度和深度的功能繼續(xù)擴大，符合最終用戶的需求。

　　The evolution of MCU applications

　　Leading semiconductor vendors have faced a period of adoption over the last decade or so， towards offering a comprehensive portfolio of MCUs based on 32-bit processing cores. Although ARM?’s Cortex?-M family is endemic in this space， it is not the only option and several proprietary architectures still exist. Perhaps one of the most prominent is theSuperH family from Renesas. It is interesting to note that while Renesas and other companies have also adopted the ARM architecture to produce complementary 32-bit families， they still offer 8- and 16-bit MCUs， for which demand is anticipated to continue for several more years.