116问答网 > 2. MCS -51单片机有几个中断源,如何控制开放或禁止中断,如果设置IP？

2. MCS -51单片机有几个中断源,如何控制开放或禁止中断,如果设置IP？

2025-03-15 11:50:57
推荐回答（1个）
回答1：

MCS -51单片机有5个中断源,外部中断0 外部中断1 定时器0中断 定时器1 中断 串口中断
开放 中断 先开总中断即 EA=1， 再开分中断如EX0 =1.中断优先级1为高 0为低
中断优先级存器不可位寻址，只能统一设置。

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