设计了一种嵌入式系统中多串口扩展适配器的系统，其主控芯片采用MSP430F147单片机，串口扩展采用TL16C752B芯片。该系统结构简单、易于实现，满足对串口数量、成本和功耗有严格要求的应用场合。%The design scheme for multi serial port adapter of an embedded system was proposed which employed MSP430F147 as the main control chip and used TL16C752B to expand the serial port. The hardware circuit and software processing were also introduced. The scheme has the advantages of simple structure and easy realization. It applies to ap⁃plications which have strict requirements on the number of serial port, cost and power consumption.
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