地址锁存控制信号端。单片机正常工作时ALE引脚连续输出正脉冲信号。当C

地址锁存控制信号端。单片机正常工作时ALE引脚连续输出正脉冲信号。当CPU访问外部程序存储器时，ALE输出的信号作为低8位地址的控制信号；但是当CPU访问片外数据存储器时，会跳过ALE的脉冲信号；当ALE不访问片外存储时，ALE会以振荡器频率的1/6输出脉冲，所以ALE信号可用作外部输出时钟或定时信号。通过示波器查看ALE端是否输出脉冲信号判断芯片的质量，若有输出，则芯片完好

地址锁存控制信号端。 单片机正常工作时ALE引脚连续输出正脉冲信号。 当CPU访问外部程序存储器时，ALE输出的信号作为低8位地址的控制信号；但是当CPU访问片外数据存储器时，会跳过ALE的脉冲信号；当ALE不访问片外存储时，ALE会以振荡器频率的1/6输出脉冲，所以ALE信号可用作外部输出时钟或定时信号。 通过示波器查看ALE端是否输出脉冲信号判断芯片的质量，若有输出，则芯片完好

Address lock control signal terminal. The ale pin outputs the positive pulse signal continuously when the MCU is working normally. When the CPU accesses the external program memory, the signal output by ale is the control signal with low 8-bit address; however, when the CPU accesses the off-chip data memory, it will skip the pulse signal of ale; when ale does not access the off-chip storage, ale will output the pulse with 1/6 of the oscillator frequency, so ale signal can be used as external output clock or timing signal. Check whether the ale end outputs pulse signal through oscilloscope to judge the quality of the chip. If there is output, the chip is in good condition<br>