来源:学生作业帮 编辑:作业帮 分类:英语作业 时间:2024/05/29 02:45:03
i2c为何加上拉电阻?
I2C bus SCL/SDA lines are driving and connecting by using open-drain structure.
That is output logic 0 by driven low voltage 0.Output logic 1 by driven High-Z and pull to high voltage by external PCB pull-high resisters.