| 摘要 |
<p>A patient monitor and a multi-MCU memory data exchange device for same comprise at least two MCUs (100), an SPI bus (200), and at least two memories (300). The MCUs (100) are connected to each other through the SPI bus (200). The MCUs (100) are each independently connected to the memories (300). The SPI bus (200) is an SPI bus (200) in DMA mode, and the memories (300) connected to the MCUs (100) exchange data with each other through the SPI bus (200) in DMA mode. The patient monitor and the multi-MCU memory data exchange apparatus of same automatically exchange data in the memories (300) respectively connected to the MCUs (100) at a fixed clock frequency. For the MCUs (100), data that needs to be exchanged only needs to be placed in the respective memories (300) at such a fixed clock frequency, so as to achieve the objective of high speed communication; in addition, as the MCUs (100) are connected through the SPI bus (200), wiring of the entire apparatus is simple. Because an SPI DMA mode is used, the intervention of an MCU is not needed, so that a system overhead is lowered and system efficiency is enhanced.</p> |
