比如给端口扩展芯片PCA9555的P0^0引脚配置为输出高电平,重新上电后P0^0引脚还是输出高电平吗?
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比如给端口扩展芯片PCA9555的P0^0引脚配置为输出高电平,重新上电后P0^0引脚还是输出高电平吗?