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cc2541 i/o输入电压大于多少伏可判定为高电平,低于多少伏可判定为低电平?
CC2541任何一个引脚输入电压不能超过VCC+0.3V≤ 3.9,不能低于-0.3V,否则可能会损坏I/O口
BR. Albin