分析了ADC转换器单端模式下对电压信号的采集过程和DMA控制器对外部存储器写入数据的过程。
The process of data acquisition with ADC controller in single-ended mode and the process of data storage with DMA controller are described.
DMA控制器可以无需CPU介入而在内部存储器、外部存储器和芯片外设之间传送数据，其在DSP系统中有广泛的应用价值。
The DMA controller can transmit data among the interior memorizer, exterior memorizer and chip peripheral without the CPU intervention. It has comprehensive application value in the DSP system.
一种微控制器(1)，具有特殊功能寄存器，在运行中在内部存储器与外部存储器之间作出内部选择。
A microcontroller (1) having a special function register to internally select between internal memory and external memory on the fly.
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