User Guide

PinNames
The NAME command allows you to name pins after they have been
placed. The automatic name allocation, as described on page 69 also
operates.
SchematicSymbol
The schematic symbol is drawn in the symbols layer using WIRE and
the other drawing commands. Place the texts >NAME and >VALUE in
layers 95, Names, and 96, Values (TEXT command). Place them where
thenameandvalueofthecomponentaretoappearintheschematic.
Precise placement of the text can be achieved by setting the grid finer,
which can even be done while the TEXT command is active. Afterwards,
however,settheagaingridto0.1inches.
ResistorDevice
DefineaNewDevice
Create the new device R-10 with this icon. When you later use the ADD
command to fetch the component into the schematic, you will select it
by using this name. It is only a coincidence that in this case the name of
thepackageandthenameofthedevicearethesame.
So enter the name R on the New line. The device editor opens after the
confirmingquestion Createnewdevice‘R’?.
Selecting,NamingandConfiguringSymbols
The previously defined resistor symbol is fetched into the device with
theADDcommand.
If a device consists of several schematic symbols which can be placed in
-
dependently of one another in the circuit (in EAGLE these are known
as gates), then each gate is to be individually brought into the schematic
withtheADDcommand.
Set an addlevel of Next and a swaplevel of 0 in the parameter toolbar, and
then place the gate near the origin. (There are further explanations
aboutaddlevelinthefollowingsections.)
The swaplevel of a gate behaves very much like the swaplevel of a pin.
The value of 0 means that the gate cannot be exchanged for another gate
in the device. A value greater than 0 means that the gate can be swapped
within the schematic for another gate in the same device and having the
sameswaplevel.ThecommandrequiredforthisisGATESWAP.
Onlyonegateexistsinthisexample;theswaplevelremains0.
145
ComponentDesignExplainedthroughExamples