13问答网 > MCS-51单片机的中断系统的处理过程是什么？

MCS-51单片机的中断系统的处理过程是什么？

2025-03-16 19:13:38
推荐回答（1个）
回答1：

从本质上说，
每一个中断都一个专门的寄存器，即中端标志寄存器。
当中断寄存器的值为1时，会向cpu发送中断请求。
但是响不响应是根据 ie寄存器里的位所决定的。

总的来说，mcs-51的硬件里有好几个寄存器是专门负责中断的。

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