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Author Topic: How to show internal pullups on a schematic?  (Read 1515 times)
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If the pin/input has a name you put a bar over the top of it to indicate that the logic is reversed (that it has an internal pullup). Shouldn't that be sufficient?
No a bar means active low, that is a logic zero means the name is true. It is absoloutly nothing to do with pull up resistors.

If you want to show internal pull ups on schematics you draw them inside the outline of the box that represents the IC.

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