将单片机和DSP功能块和基于数据流的处理

　　将单片机和DSP功能块和基于数据流的处理

　　微控制器做好控制用户界面的工作。他们可以初始化其他电路，监控输入，反应中断，并驱动输出显示和控制。然而，当模拟功能，如A/D转换器、D/A转换器、PWMs、参考电压，运算放大器和比较器，让单片机的功能在模拟领域，这对于许多相对简单的模拟处理任务总体上是常见的，微控制器通常是弱时，模拟信号的处理。

　　恒温器是一个很好的例子，几乎任何混合信号微控制器可以处理。它监视一个温度，将它与设定点进行比较，并抛出一个开关。您可以添加编程滞后，定时操作，云，和全世界的连接到它，但底线是，MCU抛出或释放一个开关来执行其任务。

　　In the real world， however， most control loops operate much faster than a room’s temperature change， and monitor more than just one input. This is where basic attributes such as speed， performance， and flexible architecture are important， but also important is the type of DSP functionality either merged into the core of the microcontroller， or， sitting side by side with a microcontroller to tackle analog functionality， especially with block- or stream-oriented types of processing needs.

　　This article looks at levels of DSP functionality available in standard microcontrollers， as well as the features used to turn analog-signal processing into digital-domain solutions. All parts， datasheets， tutorials， and development kits referenced here can be found online at Digi-Key’s website.