GPIO计数器时钟输入,SN74LV163A 计数,只使用低3bit,8进制;SN74CBT3251 8bit多路开关,解码后驱动LED
GPIO计数器时钟输入,1.8v电平,Q1 NMOS,把1.8v电平变成5v
按照以下电路,ENT、*LOAD、*CLR、ENP = VCC = 5v,计数器输出无规律
飞线:ENT、*LOAD、*CLR、ENP = 3.3v,计数器工作正常
是不是存在一个低级错误?
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GPIO计数器时钟输入,SN74LV163A 计数,只使用低3bit,8进制;SN74CBT3251 8bit多路开关,解码后驱动LED
GPIO计数器时钟输入,1.8v电平,Q1 NMOS,把1.8v电平变成5v
按照以下电路,ENT、*LOAD、*CLR、ENP = VCC = 5v,计数器输出无规律
飞线:ENT、*LOAD、*CLR、ENP = 3.3v,计数器工作正常
是不是存在一个低级错误?