Active low and pin stuff

[silvio3105]

Hi,

How can I add line above pin name that indicates active low(tie to GND to turn on something)? For now I use dot function.

See datasheet image below, pin #5.

About pin stuff:

All symbols and schematics I do are on 2.54mm grid and I want to draw them small as possible.

Problem is pin font size and spacing. Pin lenght is 2.54mm.

Dot on EN pin is too big. Pad numbers and pin names also. Spacing between pin names and actual pins are too big for me.

Please add options to control those things.

[RichardHammerl · Accepted solution]

Hi @silvio3105 

let me just add the section from the Fusion in-app help.

Overlined text

Text can be overlined, which is useful for instance for the names of inverted signals ("active low", see also NET, BUS and PIN). To do so, the text needs to be preceded with an exclamation mark ('!'), as in

  !RESET

which would result in

  _____
  RESET

This is not limited to signal names, but can be used in any text. It is also possible to overline only part of a text, as in

  !RST!/NMI
  R/!W

which would result in

  ___
  RST/NMI
    _
  R/W

Note that the second exclamation mark indicates the end of the overline. There can be any number of overlines in a text. If a text shall contain an exclamation mark that doesn't generate an overline, it needs to be escaped by a backslash. In order to keep the need for escaping exclamation marks at a minimum, an exclamation mark doesn't start an overline if it is the last character of a text, or if it is immediately followed by a blank, a double or single quote, or by a right parenthesis, bracket or brace. Any non-escaped exclamation mark or comma that appears after an exclamation mark that started an overline will end the overline (the comma as an overline terminator is necessary for busses).

Best regards,

[silvio3105]

Thanks for answer. Did not know that.
But, what dot function(+ clk, clkdot) does?

[jorge_garcia]

Hi @silvio3105,

I hope you're doing well. Those functions are used with logic circuits. So dot implies an inverted pin (ACTIVE LOW) and many digital circuits have CLK pins which can also be inverted.

It's pretty specialized.

Let me know if there's anything else I can do for you.

Best Regards,