我在采用MSP430F5438单片机,以上电对P1.1 P1.2赋值为高电平,现发现当VCC稳定20ms后,IO口才会置高,请问这种现象是正常的吗? 如果我想一上电就是高电平,该怎么处理??
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我在采用MSP430F5438单片机,以上电对P1.1 P1.2赋值为高电平,现发现当VCC稳定20ms后,IO口才会置高,请问这种现象是正常的吗? 如果我想一上电就是高电平,该怎么处理??
不好意思,由于外置了一颗复位芯片,该芯片一直拉低RST导致,已找到原因,谢谢!