Data sheets are written for design engineers, and they usually contain much more information than you need to get most devices working in an Arduino project. Don’t be intimidated by the volume of technical information; you will typically find the important information in the first couple of pages. There will usually be a circuit diagram symbol labeled to show how the connections on the device correspond to the symbols. This page will typically have a general description of the device (or family of devices) and the kinds of uses they are suitable for.
Data sheets shouldn't be intimidating!
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