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理解 I2C 总线

更新时间：2018-12-25 20:12:08 大小：125K 上传用户：user22901查看TA发布的资源 标签：I2C 下载积分：2分 评价赚积分 （如何评价?） 打赏 收藏 评论(0) 举报

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The I 2C bus is a very popular and powerful bus used for communication between a master (or multiple masters) and a single or multiple slave devices. Figure 1 illustrates how many different peripherals may share a bus which is connected to a processor through only 2 wires, which is one of the largest benefits that the I 2C bus can give when compared to other interfaces. This application note is aimed at helping users understand how the I 2C bus works. Figure 1 shows a typical I 2C bus for an embedded system, where multiple slave devices are used. The microcontroller represents the I 2C master, and controls the IO expanders, various sensors, EEPROM, ADCs/DACs, and much more. All of which are controlled with only 2 pins from the master.

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pca9548_application.pdf 125K

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