飞思卡尔S12X系列单片机协处理器的应用

摘要

介绍飞思卡尔16位微处理器S12X（E）系列单片机协处理器（XGATE）的基本特性、中断及优先级设置、代码在RAM中运行、信号量的互锁，以及利用其实现CAN信息中断接收的应用实例，从而减轻CPU的负担以增强汽车电子软件系统的数据吞吐能力。%The authors introduce the basic characteristics, interrupt and priority setting, code operation in RAM and signal interlocking of the Freescale 16-bit microprocessor series S12X(E) single chip processor(XGATE). They also present the application instance of using coprocessor implementation CAN information interrupt receiving in order to reduce the burden of CPU and enhance the data throughput of the vehicle electronic software system.