Cadence Allegro draw package library
Introduction: Cadence is a much more powerful than AD circuit design IDE, so grasp Cadence is a major upgrade path to self.
First, the drawing pad
1. Open the PCB Editor Utilities - Pad Designer. This is the Cadence suite of software drawing pad.
2. Choose Layer, select the single layer mode. In the Geometry (the geometry) bar, select: Oblong (oval pads) or Rectangle (rectangular pads).
Select 3. View column: Top.
4. Select Begin Layer, in the Pad Regular below 0.3 Width input, the input Height 1.6; selected SolderPaste_Top (top pad layer), 0.3 Width input, the input Height 1.6; selected SolderMask_Top (top solder resist layer), an input Width 0.45 in Height 1.75 inputted; welding layer is generally disposed slightly larger than the solder resist layer. Save as: pad0_3x1_6.
Second, drawing package
1. Open the PCB Editor;
2. New – Package symbol ；
. 3. Setup-Design Parameters Design in - Units in the unit to mm;
4. Layout -. Pin placement pad mode entry case.
5. Find Option right-hand column - Padstack - find padstack and pad to open the first step in the establishment of.
6. If the fifth step of the pads can not be found, you need to change the default pad save address: Setup - User Preferences - Paths - Library - Padpath;
7. After placement pad assembly to be placed: using the line drawing commands, and select the Option: Package - Geometry; Assembly_Top;
8. Place screen frame: using the line drawing commands, and select the Option: Package - Geometry; Silkscreen_Top; adding identification pin 1: Add- Circle.
9. In order to avoid the error: "Symbol is missing a refdes.", You need to add Tag: Add Text - Ref Des -Silkcscreen_Top input REF, Add Text - Ref Des - Assemble_Top input REF.
Save FIG complete drawing package.
Shortcut Description
1.Ctrl + D to delete key;
2. In the command block type: x coordinate y coordinate x can be quickly placed in the pad to the coordinate;
3. ix L identifies the length L along the x axis offset, iy L length L identifies the offset along the y axis;
4. Other settings shown below:
(Original article, starting in www.allchipdata.com, http://www.allchipdata.com/archives/702 )