直接存储器存取(DMADirect Memory Access)方式是用硬件实现存储器与存储器之间或存储器与I\O设备之间直接进行高速数据传送，不需要CPU的干预。这种方式通常用来传送数据块。MSP430f16x系列单片机内部含有DMA模块，而且几乎内部所有外设都可以触发DMA开始存取数据。这里实现了这个模块的程序通用的函数库，方便使用。

-Direct memory access (DMADirect Memory Access) is used in the hardware implementation of high speed data transfer between memory and the memory or the memory and I\O devices directly, without the intervention of CPU. This approach often used to transmit the data block. MSP430f16x Series MCU internal containing the DMA module, and almost all internal peripherals can trigger DMA to access data. Here the procedures to achieve the general functions of this module, easy to use.