User Guide

DefiningaPowerSupplySymbol
Two pins are needed for the supply voltage. These are kept in a separate
symbol,sincetheywillnotinitiallybevisibleintheschematicdiagram.
Click on the Edit a symbol icon. Enter a name for the symbol on the new
line, such as VCC-GND, and click OK. Confirm the question Create
newsymbol‘VCC-GND’?with Ye s.
ChecktheGrid
First check that the grid is set to the default value of 0.1 inch. Only ever
usethisgridwhenplacingpins!
PlacethePins
Fetch and place two pins with the PIN command. The coordinate origin
shouldbesomewherenearthecenterofthesymbol.
Both pins are given PWR as their direction. To do this, click with the
mouse on CHANGE, select the Direction option, and choose PWR.
Nowclickonthetwopinstoassignthisproperty.
The green pin label is updated, and now shows Pwr 0. It is only visible
whenlayer93, Pins,isactive!
PinName
You use the NAME command to give the two pins the names of the sig
-
nalsthattheyaretocarry.Inthiscase,theseareGNDandVCC.
For reasons of appearance, the pin property Visible is set to Pad in the
symbol shown below, and the pin label has been placed on layer 95,
Names,usingTEXT.
PlaceholdersforNAMEandVALUE
For the component labeling, use the TEXT command in the schematic
diagramtowrite
>NAME
in layer 95, Names. Place the text at a suitable location. No placeholder
isnecessaryforvaluehere.
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EAGLEManual