Pinout Arrows – What Do They Represent?

datasheetdmapinout

What do these arrows represent?
Is there any way to memorize it easily?

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Best Answer

They indicate data direction. Arrows pointing to the chip indicate that those pins are inputs and vice versa. Bidirectional arrows indicate they are either inputs/outputs, depending on the circumstances.

If you want to memorize it, I think you should memorize those pins meanings first.