pads layout

8/10/2019 Pads Layout

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Electronics

Unit

PADS Layout (9.3.1)Training Manual

Fifth Edition

PADS Layout


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Table of Contents

1. Technical Overview .............................................................................................. 1

2. PCB CAD Layout Considerations ................................................................... 2

2.1 Basic Considerations ........................................................................................... 2

2.2 Board Setting ...................................................................................................... 3

2.3

Design Rules ....................................................................................................... 3

2.4 Component Placement ........................................................................................ 3

2.5 Routing ............................................................................................................... 4

2.6

CAM Output ....................................................................................................... 5

3.

File and Folder Structure of PADS Layout Installation ................................... 8

4. Design Process Overview .................................................................................. 9

5. Getting Started in PADS - PADS LAYOUT for Windows ....................... 10

5.1

The PADS Interface ........................................................................................... 10

5.2 Information Windows ....................................................................................... 14

5.3 Numeric Keypad Commands.............................................................................. 15

6. Exercise 1: PADS Environment Setup ......................................................... 16

6.1

Set up Global Parameters .................................................................................. 16

6.2

Set up Display ................................................................................................... 17

7. Exercise 2: Music Board ................................................................................ 19

8. Create Board Outline ...................................................................................... 20

8.1 Set Origin .......................................................................................................... 20

8.2 Create Polygon ................................................................................................. 20

8.3

Create Arc ( P1 ) ................................................................................................ 21

8.4

Create Arc ( P2 ) ................................................................................................ 21

8.5

Place 2D line ..................................................................................................... 21

8.6 Create Text ....................................................................................................... 22

8.7

Change Text Size ............................................................................................... 23

8.8 Add a Component ............................................................................................. 23

8.9 Save Job ........................................................................................................... 24


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9. Exercise 3: Load the Parts and Parts Placement .......................................... 25

9.1

ASCII In ............................................................................................................. 25

9.2 Place Parts ........................................................................................................ 25

9.3 ASCII File In ....................................................................................................... 26

9.4

Move Part Name ............................................................................................... 27

9.5

Create Text ....................................................................................................... 28

9.6 Create Other Side Text ...................................................................................... 29

9.7 Save Job ........................................................................................................... 29

10. Exercise 4 : Connection Routing .................................................................... 30

10.1

Setup Trace Width before Routing................................................................. 30

10.2 Manual Routing ............................................................................................ 30

10.3

Modify Route ............................................................................................... 32

10.4

Create Text to Solder Side ............................................................................. 32

10.5

Save Job ....................................................................................................... 32

11. Exercise 5: Checking ....................................................................................... 33

11.1 Check Clearance ............................................................................................ 33

12. Exercise 6: Create Copper Pour ................................................................... 34

12.1 Create Copper Pour ....................................................................................... 34

12.2

Save Job ........................................................................................................ 34

13.

Exercise 7 : CAM ( Computer Aided Manufacturing ) ............................ 35

13.1 Artwork ........................................................................................................ 35

13.2 Silkscreen ..................................................................................................... 37

13.3 Solder Mask .................................................................................................. 39

13.4

Drill Drawing ................................................................................................. 41

13.5

Create NC Drill File ......................................................................................... 44

13.6 Create Gerber File ............................................................................................. 47

14. Exercise 8: Create Parts Library .................................................................. 50

14.1 Create and Setup a New Library ..................................................................... 51

14.2

Create a Through -Hole Component ( TEST_PAD ) ........................................... 53

14.3 Create a Surface Mount Component ( S\SOT23 ) ............................................. 64

14.4 Create a Surface Mount Component ( S\PWR ) ............................................... 65

14.5

KS5915 .......................................................................................................... 68

14.6

1M_DRAM..................................................................................................... 68

14.7 TM-062 ......................................................................................................... 69

14.8

SMT_LED ....................................................................................................... 69


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15. Exercise 9: SMT Music Board ........................................................................ 70

15.1 Create Board Outline ..................................................................................... 71

15.2 Create Text .................................................................................................... 71

15.3

Load the Parts and Parts Placement ............................................................... 72

15.4

Add Connection ............................................................................................. 75

15.5 Connection Routing : ..................................................................................... 76

15.6 Create Copper Pour ....................................................................................... 77

15.7

Checking........................................................................................................ 77

15.8

Save Job ........................................................................................................ 77

15.9 CAM ( Computer Aided Manufacturing ) ....................................................... 77

16.

Assignment 1: Power Supply .......................................................................... 78

17. Assignment 2: SMT - Amplifier ..................................................................... 81

17.1

SMTC100 ....................................................................................................... 84

17.2

SMTHD2 ........................................................................................................ 85

17.3 ST23A ............................................................................................................ 85

18. Assignment 3: SMT - Recorder ..................................................................... 86


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Objectives Recognize the background knowledge for PCB designed

Hands on the basic layout techniques

Use PADS Layout to design your printed circuit

Create a board outline or import it from mechanical CAD tools

Add new component decals/footprints to your library

Place and route your components within the constraints of your design rules andlayer settings

Create copper fill areas

Verify your design conforms to those rules

Create PCB fabrication documents and Gerber output

PADS Flow

Training Objectives &

PADS Layout Flow


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Electronics Unit , Industrial Centre , The Hong Kong Polytechnic University

PADS Layout Training Manual 1

1. Technical Overview

PADS Layout is a robust PCB editing environment for efficiently designing androuting complex PCBs.

Netlist import, reads in:

o Component attributes

o Design rules

o Net constraints

o Schematic agnostic

Component creation:

o Wizard-driven

o Fast, accurate land-pattern generation

Component placement:o Easy, precise

o Manual or automatic

o Allows group placement & rotation

Routingsignificantly improved in PADS2007

o Fast, efficient

o Shape-based, any-angle

o Interactive or automatic

o High completion rates

o Minimal post-route rework

Split & mixed-plane definition

o Custom thermal pads

o Cutout support

o Embedded planes & routes

o Connectivity checks

Automation

o OLE (object linking & embedding)

o Visual Basic engine with automated script wizard

o Enables easy customization & advanced integration

Cross-probing

o Bidirectional, between schematic & layout

o Between PADS Layout and Excel


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2. PCB CAD Layout Considerations

2.1 Basic Considerations

- Component parts

Association of Symbols and Physical Packages

Documentation information

- Symbols (for schematic drawing)

Symbol Graphics

Gate and pin definition

Swap ability

- Physical Package

Body outline

Physical data (e.g. height)

Pad and pin definition

Solder Resist and Solder Paste Definition

Silk-screen graphics and text

Component Part

Symbols Physical Package


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2.2 Board Setting

Design rules

Board outline

Working area

Holes and cut-outs Restriction area

- Component

- Tracks

- Via

Layer definition

Grid

2.3 Design Rules

Signal track width

Power track width

Track to Track clearance

Track to Pad clearance

Track to Via clearance

Via to Pad clearance

Track to SMD pad clearance

Via to SMD pad clearance

Component to component clearance

Solder resist to Pad clearance

Silk-screen to Solder Pad clearance

Silk-screen line width

Silk-screen text height and thickness


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2.4 Component Placement

Disperse Component

Automatic Cluster placement

Manual Component Placement

2.5 Routing

Interactive routing

Auto - routing

PADS Router


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2.6.2 NC Drill - Excellon

EXCELLON Format:

% Separately Programmed In a Block Marking

C Tool Diameter

F Feed Rate

R Repeat Pattern

M01 Optional Stop

M02 End of Program

M30 End of Program Rewind

M48 Program Header

Example

Drill Sizes Report File Data File

Drill Sizes Report

==================

Tool Size Feed Speed Qty

==== ==== ==== ===== ===

1 12 0 0 112

2 37 200 500 4

3 52 200 500 2

4 100 200 500 2

%

T1F0S0

X03075Y019

X037Y014

T2F2S5

X03729Y00779

X037Y0175

T3F2S5

X02958Y013

X031Y01441

T4F2S5

X0276Y01639

X03439Y0096

M30


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2.6.3 Pen Plotter

HPGL Format:

AR Arc relative

IN Initialize

IP Sets scaling points

LT Line type

PA Plot absolute

PD Pen down

PT Pen thickness

PU Pen up

SP Select pen

SC Scaling

Example:

1024;3:DF;CT1;PA;PU-20320,-16256;PR;

SP1;

PU 18313,15557;PD 0,1727;

PU 92,0;PD 18,0;

PD;AR -110,0,180.0,2;PA;PU594,560;PR;

PU -109,0;PD 18,0;PU -102,915;PD 30,0;

PD 0,5;

PD -30,0;

PU 4,-59;PD -22,20;

PD -3,-3;

PD 21,-22;

PD 4,5;

PU;SP0;


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3. File and Folder Structure of PADS Layout Installation

After PADS installation, PADS software will create the following file and folder

structures by default. It consists of a lot of documents and sample files for reference.

The \Documentation folder contains tutorial documents of the software.

The \Libraries folder directory stores the PADS part libraries.

Such as *.ld9, *.ln9, *.pd9.*.pt9

The \Program folder contains the executable files.

The \Samples folder contains some example drawings.

The \Settings folder contains setting files of PADS Layout.

The default working folder path is: (Remark: the current directory path C:\PADS Projects)

The \CAM folder stores the output files of the CAM commands.Such as *.REP, *.PHO ...etc.

The \Reuse folder stores files of the Reuse function.

The \Samples folder contains some example drawings.


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4. Design Process Overview

Taking a new design from concept to completion requires a designer to pay attention to

many details. We all know that designing a printed circuit board is a continuous process

of making design decisions and tradeoffs.

Throughout the design process, you must weigh a

number of conflicting factors and make calculated

design choices in order to obtain the best possible

design outputs.

Knowing that your design tools have the ability to

provide and manage the required content gives you

a strong foundation on which to build your design.

PADS PCB Design Solutions offer a fully featured

front-to-back design flow that allows you to balancerules and constraints in an intelligent and

predictable manner to produce quality designs that

can be easily produced.

Though there are hundreds of operations you must

perform to produce a final design, we can distill the

process down to a few basic steps:

1. Gather the required library parts.

2. Capture the schematic.

3. Generate a netlist.

4. Construct the board outline.

5. Set up the design rules and constraints.

6. Place the components.

7. Route the board.

8. Verify the design.

9. Generate the CAM documents.


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5. Getting Started in PADS - PADS LAYOUT for Windows

Double cli ck the PADS icon to start the program

5.1 The PADS Interface

Design

Toolbar

DraftingToolbar

Dimensioning

Toolbar

ECO

Toolbar

Working AreaOrigin

Informationwindows


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5.1.1 Toolbar with Command Buttons

Drafting Toolbar Design Toolbar ECO Toolbar

Dimension Toolbar


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5.1.2 On the Screen

The system database and working area has a maximum horizontal and vertical value of

56.3 inchor 143 cm. The database is a square area. It has a resolution of 0.00001 inch

or 0.001mm. The origin is in the lower left hand corner of the screen.

5.1.3 Menu Windows:

The PADS Layout interface uses standard menus and dialog boxes common to UNIX

and Microsoft Windows application.

Example: Create a Board Outl ine:


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5.1.4 Shortcut keys

PADS Layout provides macro-programmed Shortcut key as a standard feature for

quick menu access.

Ctrl- B View board

Ctrl- D Redraw

Ctrl- E Move

Component

Ctrl- F Flip selected

Ctrl- G Create Union

Ctrl- H Highlight

Ctrl- I Spin selected

Ctrl- K Create cluster

Ctrl- Q Query / Modify

Ctrl- R Rotate

selected

Ctrl- Z Undo

Ctrl-Alt -E View extents

Ctrl-Alt -F Selection filter

Ctrl-Alt -P View previous

Ctrl-PgDn Reset relative

coords

Esc Cancel

command

F1 Help

F2 Add route

F3 Dynamic

route

F4 Toggle layer

pair

F5 Select pin pair

F6 Select net

M Right click

with mouse

Space bar Left click with

mouse

Tab Cycle pick

5.1.5 Modeless Commands

Modeless commands usually apply to specifications that must commonly be changed in

any mode; leave, grid, or line width must be altered when editing text, drawing lines,

routes or any other database element. With the modeless command G , for example,

you can change by typing G , and the new setting . You can change the current level by

typing L and the new desired level.

Summary of frequently used modeless PADS Layout commands:

AA Any angle G Grid global setting

AD Diagonal angle L Changes current layer to specified

AO Orthogonal angle N Highlights specified net

D Display last current layer on/off. PL Paired layer command

DRI DRC Ignore Clearance RE Multiple redo command

DRO Turn off DRC Mode S Search for specified ref. Des/pin

DRW DRC Warm S Search using absolute coords

E Toggle end via / no via UN Multiple undo command

M Open pop-up menu W Change width to specified

O Toggle outline display R Set min. display width to specified

PO Pour outline on / off X Text outline on / off

SS Search & select by ref. Des. PN Toggles pin number display on or off.

GD Dot grid setting Q Quick Measure.

M Open pop-menu QL Quick Length.

VA Automatic via selection T Toggle Transparent Mode.

VP Use partial via UM Sets Design Units to mils.

VT Use through-hole via UMM Sets Design Units to millimeters

GP Polar grid on/off.

Ps: (x , y) = coordinates ; (s) = text ; (n) = number


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5.2 Information Windows

Menu now

selected

System Grid

Setting

Postage Stamp areaof zoom relative to

board outline


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5.3 Numeric Keypad Commands

Numeric keypad zoom and pan command

Redraw : Repaints the screen without changing the size or position of viewing

window.

Home : Move the cursor over the data which you wish to appear in the centre of

the screen. The display is re-drawn so the area under the cursor is moved to

the centre of the viewing area, with no scale change.


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6. Exercise 1: PADS Environment Setup

6.1 Set up Global Parameters

Tools Options

General

Cursor Style: Display the cursor as an arrow, which is normal, a small cross, a large

cross, or a Full screen cross hair.

Cursor Pick Radius: Enter the radius of picking area from cursor. Control the picking

area of object from the cursor. The biggest the value is, picking

area from cursor is larger.

Units Type: Mils (thousands of an inch), metric units or inches.

Minimum Display Width: The minimum display width for any lines. Any line width

is less than this value, its actual width will be shown.

Backup Interval: Allow user to set the backup interval in minutes. Backup copy will

be saved automatically whenever interval is reached. The backupfile name is layout.pcb.

When the Command is selected, the screen displays a pul l -down menu. To select

A parameter setting, selects it with theMouse, enter a new value and cl ick< OK >

Af ter you have changed all desired parameters. SelectApply. The display is redrawnwith the new selections active.


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6.2 Set up Display

Setup Display Colors

In general,

Layer 1)Top and 2)Bottom for artwork (component side & solder side),

Layer 24)Drill Drawing for a drill drawing

Layer 26)Silkscreen Top and 29)Silkscreen Bottom

Layer 28)Solder Mask Bottom for a solder mask

Layer 27)Assembly Drawing Top

To change a color for an i tem, fi rst you must make the color active by cl icki ng it

with the left mouse button. The rectangle centered dir ectly below the palette li ne

displays the color you have selected. Now br ing the cur sor down over a level of an

item and cl ick the left mouse button. The Level number is boxed by the color you have

selected .

To make an item invisible, place the cur sor over the same color as the screen

background and make it active.

Set Al l i tems on Top to Yell ow , except Er rors . Set Er rors to Red.

Set Al l items on Bottom to Light Blue , except Err ors . Set Errors to Green.

Set Connections to Red.

Set Background to Black .

Set Selection to Green.

Set Board Outl ine to White .

Set Top (Layer 1) to White .

Set Labels -- Ref . Des to Pur ple .

Save Configuration to your

Student number.


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6.3 Setup Global Size and Grids

Tools Options

Drafting

Tools Options Grids

In Global Size Modeless Command the left numbers are the default numbers that an

item takes when a database is initially created. Every time you make a change to the

width of these line items. The right numbers show the size of an item as it is

currently in the database.

W n: Modeless Command, Change lines and route width.

H m W n: Modeless Command, Change the default text size.

G X: InGrids Modeless Command , Changes current cursor grid .

For example, G 25 (0.025 inch), PADS is actually locating to the 0.025

inch point.


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7. Exercise 2: Music Board


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8. Create Board Outline

Note: (Click Right Button to complete)

8.1 Set Origin

(G25) Setup Origin

Using Setup, move the system origin by placing the cursor about 2 inches down

and to the left of the centre of the screen

G X: Modeless Command, Changes current cursor grid. For example, G 25 (0.025

inch), PADS is actually locating to the 0.025 inch point.

8.2 Create Polygon

Boar Click Right Button

( Drafting ) ( Board Outline )

( S 0 0 ) Click Left Button ( or Press Spacebar )

( S 2300 0 ) ...

( S 0 1900 ) Click Right Button ( S 0 0 ) Complete < dbl_click >

S x y : Modeless Command , Search for an X-Y location or for parts.

The Coordinate of outline

X Y0 0

2300 0

2300 1900

2200 2000

100 2000

0 1900

(150,150) (2150,150)

(150,1800) (2150,1800)

Origin (0,0)


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8.3 Create Arc ( P1 )

( G5 ) Click Mouse Right Button

Select Outline Click Mouse Right Button

Place the cursor over the 45segments, and then select Pull Arc . Pick the cursor

over the two 45corners and move the cursor outward.

8.4 Create Arc ( P2 )

Click Mouse Right Button

Select Outline Click Mouse Right Button Properties.


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8.5 Place 2D line

Call up the 2D Lines item Arr200 (dimensioning arrow ) rotate and place it to the

Board .

Remark: Ctrl + R for Rotate, Ctrl + E for Move

8.6 Create Text

L n: Modeless Command, Changes current level or layer. If enter L0 all texts will

add to < All layers > .

Now enter the following text upper the arrows: REDUCE TO 2.300 +\- 0.001

REDUCE TO 2.000 +\- 0.001

Remark: The default height is 100, width is 10

( Arr200 )

( Text )

( G5


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8.7 Change Text Size

Create a text: Music Box 001-010-B to < All layers > and height is 100,

width is 10


Select Music Box 001-010-B Double Click

Change Text Size to 200 and width to 10

8.8 Add a Component

ECO

Press OK

Add Component

Enter MTHOLE

Press Add

( P1 .. P4 )


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Select P1 Click Mouse Right Button

Select Properties Key in location: 150 , 1800 Press Ok Select P2

..

The coordinate of MTHOLE is

P1 150 , 1800

P2 2150 , 1800

P3 2150 , 150

P4 150 , 150

8.9 Save Job

File/save as OUTLINE.PCB


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9. Exercise 3: Load the Parts and Parts Placement

9.1 ASCII In

File Import ( THMUSIC.ASC )

We will now load the part and connection files into memory along with the board

outline

9.2 Place Parts

(G25) SS U1 ( Select Component and Move )

Design Move

S 800 1800 [ Rotate 90 (Ctrl -R) Or F li p Side ( Ctrl - F )

Or Any angle ( Ctrl - I ) ] Click

Remark: Modeless Command SSforSearch & Select by Reference designator

Select and Move Component


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9.2.1 The Coordinates of Components:

REF PTYP ORI XLOC YLOC

C1 CAP+ 0.0 300 1100

C2 CAP+ 0.0 300 900

C3 CAP 0.0 1625 1475

C4 CAP 180.0 1500 1100

C5 CAP 270.0 1000 300

C6 CAP+ 270.0 1900 1100

C7 CAP 180.0 1900 900

JP1 M_HD3 0.0 400 1500

JP2 M_HD2 270.0 300 500

P1 MTHOLE 0.0 150 1800

P2 MTHOLE 0.0 2150 1800

P3 MTHOLE 0.0 2150 150

P4 MTHOLE 0.0 150 150

R1 R1/4W 270.0 300 700

R2 R1/4W 0.0 300 300R3 R1/4W 270.0 1000 900

R4 R1/4W 270.0 1725 1700

R5 R1/4W 0.0 1725 1600

R6 R1/4W 0.0 1300 925

R7 R1/4W 0.0 1450 300

SP1 M_HD2 270.0 1900 1700

SW1 M_SW 0.0 300 1300

TR1 9014 0.0 1300 600

TR2 9012 270.0 1900 650

U1 UM3482 270.0 800 1800

9.3 ASCII File In

THMUSIC.ASC

*PADS-PCB

*Part*

C4 CAP

C7 CAP

C5 CAP

R3 R1/4W

R2 R1/4W

R4 R1/4W

C6 CAP+

R1 R1/4W

R6 R1/4W

R7 R1/4W

C1 CAP+

C2 CAP+

C3 CAP

R5 R1/4WTR2 9012

TR1 9014JP2 M_HD2

JP1 M_HD3

SW1 M_SW

SP1 M_HD2

U1 UM3482

*End

*PADS-PCB

*Net

*Sig N1

R2.2 R3.2 C5.1

*Sig N3

U1.9 R3.1

*Sig N4

C5.2 R7.1

*Sig N5

C2.2 R1.2 U1.7

*Sig N6

U1.12 R6.2 R7.2*Sig N7

C3.*1 R5.1 R4.1

*Sig N8C3.2 U1.13

*Sig N9

R5.2 U1.14

*Sig N10

R6.1 C6.2 TR2.C C7.2 C4.1

TR1.C

*Sig N11

R4.2 U1.15

*Sig N12

U1.10 C7.1 TR2.B

*Sig N13C6.1 SP1.2

*Sig N14

JP1.2 U1.3*Sig N15

C4.2 U1.11 TR1.B

*Sig N16

SW1.NO U1.4

*Sig VCC

SP1.1 TR2.E C1.1 C2.1 *Sig

*End


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9.4 Move Part Name

[ Rotate 90 (Ctrl -R) F li p Side ( Ctrl - F ) ,

Any angle ( Ctrl - I ) ] Click

Move Reference Designator

Click

The Move command is used to move the reference designation and part type names

from their default position on the part decal to a new location outside the part decal

such that the names can be seen when components are installed on the board.


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9.5 Create Text

Click Drafting icon Text icon,Set 26)Silkscreen Top color White

Set Size (100 ) and LineWidth (10) OK

Now enter the following text upper the arrows:

THE HK POLYU -- INDUSTRIAL CENTREMUSIC BOX 001- 010 - B

Setup Display Color Select favor color from the Selected

Color Panel

Select the favor items in Color by layer panel

Click Apply OK

Set TEXT 1)Top to WHITE.

Set TEXT 2)Bottom to BLUE

Set TEXT 24)Drill Drawing to PURPLE .

Set TEXT 26)Silkscreen Top to RED

Set TEXT 28)Solder Mask Bottom to GREEN

e.g. Set TEXTLayer 1(Top) to WHITE.

Step 1: Click the White color from Select Color Panel.

Step 2: Using Left mouse button to select the Text item.

Step 3: Click the Apply button.


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10. Exercise 4 : Connection Routing

10.1 Setup Trace Width before Routing

Setup/Design Rules Click Default icon Click Clearance icon

Set default Width and Clearance Ok

Setup/Design Rules Click Net icon Pick Net name

Select VCC and GND( hold Ctrl key ) Click Clearance icon

Set the Width and Clearance Ok


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10.2 Manual Routing

L2 Select connection wire ( the net will display to Status windows ) Click

Right mouse button Route ( F2 )

To route connection, pick up theconnection wire by using left mouse

button then click right button to

select route item. This connection

will be routed on layer 1. If you

want to change layer to bottom 2 by

using modeless command


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10.3 Modify Route

Pick up the trace Click Right Mouse button Route , Add Miter, delete

Miter, Modify width Complete

Using various Modifysubcommands including Add

Corner, Move Corner, etc.to

modify point-to-point routes.

Pick up the trace and Press Del

to unroute the trace .

10.4 Create Text to Solder Side

Drafting icon Text icon Select layer 2 Mirror Size ( H100 W10 )

Ok

Now enter the following text to the board:

HK POLYU INDUSTRIAL CENTRE

MUSIC BOX

001- 010 - B

10.5 Save Job

File/save as ROUTER.PCB


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11. Exercise 5: Checking

11.1 Check Clearance

Select a trace and set width: 100 Tools Verify Design Tools

Verify Design Start.

The Clearance Check function examines all of, or a part of the board and evaluates the

distance or space between pads, via and routes, against your pre-programmed spacing

criteria. It then reports any violations in the form of error symbols at the screen adjacent

to the location of the error.

The Drill to Drill Checks that overlapping is concentric. It also checks that vias are not

placed on top of or concentric with component pads.

Remark: Use Verify design Dialog box to monitor the error

11.2 Save Job

File/save as CHECK.PCB


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12. Exercise 6: Create Copper Pour

12.1 Create Copper Pour

Right Mouse button

Draf ting Create Copper Pour Outli ne

Create Copper Pour OutlineSet width : 10 , Layer : Bottom , Net : GND

Press OK

Tools Pour Manager Flood Flood All Start

Remark: Copper pour hatch is not stored with a design file when the file is saved and

closed , although the hatch outline are . When you load a file, you must use

H ATCH ALL to regenerate and display the drawn hatch.

Tools Pour Manager Hatch All

12.2 Save Job

File/save as FINAL.PCB


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Press Run button to print out the desired artwork as below:


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13.2 Silkscreen

File Cam Select Directory Music Add Select Print (Silkscreen )

Set Layer Set Option Preview Run


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13.3 Solder Mask

File Cam Select Directory Music Add Select Print (SolderMask )

Set Layer Set Option Preview Run


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13.4 Drill Drawing

File Cam Select Directory Music Add Select Print (Drill Drawing )

Set Layer Set Option Set Symbols Preview Run


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Setup Drill Symbols


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Tools table of drill machine for student

Tool Diameter Tool Diameter

Number mm Mils Number mm Mils

T25 0.50 20 T41 2.10 83

T26 0.60 24 T42 Nil Nil

T27 0.70 28 T43 2.30 91

T28 0.80 32 T44 2.40 94

T29 0.90 36 T45 2.50 98

T30 1.00 39 T46 2.60 102

T31 1.10 43 T47 Nil Nil

T32 1.20 47 T48 2.80 110

T33 1.30 51 T49 Nil Nil

T34 Nil Nil T50 3.00 118

T35 1.50 59 T51 3.10 122

T36 1.60 63 T52 Nil Nil

T37 1.70 67 T53 Nil Nil

T38 1.80 71 T54 Nil Nil

T39 Nil Nil T55 Nil Nil

T40 2.00 79 T56 3.60 142

Examples:

1/4W resistor or ceramic Capacitor uses 0.8 mm drill size, i.e. T28.

Small size Tact Switch or Header uses 1mm drill size, i.e. T30.

Large size Tact Switch uses 1.2mm drill size, i.e. T32.

Mounting hole for 3mm screw uses 3.0mm drill size, i.e. T50.


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Drl00.drl

%T1F2S5

X003Y003

X003Y005

X005Y005

X003Y007X003Y009

X005Y009

X005Y011

X003Y011

X003Y013

X005Y013

X004Y015

X004Y016

X004Y017

X008Y018

X008Y017

X008Y016

X008Y015

X008Y014

X008Y013

X008Y012

X008Y011X007Y007

X007Y003

X01Y003

X01Y005

X01Y009

X011Y011

X011Y012

X011Y013

X011Y014

X011Y015

X011Y016

X011Y017

X011Y018X01325Y017

X01325Y016

X01425Y01475

X01625Y01475

X013Y01325

X015Y01125

X015Y00925

X013Y00925

X014Y007

X013Y006

X015Y006

X0145Y003

X012Y003

X0185Y003

X01825Y00575

X01725Y00675

X01725Y00925X01725Y01125

X01725Y016

X01725Y017

X01925Y01725

X01925Y01525

X01925Y01125

X01925Y00925

X01925Y00675

T2F2S5

X0015Y0015

X0015Y018

X0215Y018

X0215Y0015

M30

Drl00.rep

Drill Sizes Report

==================

Tool Size Feed Speed Qty

==== ==== ==== ===== ===

1 0.9398 200 500 59

2 2.9972 200 500 4

According T-table tools dimension to change tools number:

T1 ( 0.9398 mm ) Round toT30 ( 1.00 mm)

T2 ( 2.9972 mm ) Round to T50 ( 3.05 mm)

Delete NC command Fx & Sx

T1F2S5

X003Y003

X003Y005

.

.

T2F2S5

X0015Y0015

X0015Y018

T30

X003Y003

X003Y005

.

.

T50

X0015Y0015

X0015Y018


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File Cam Select CAM Directory Music Add (Photoplotting ) Select Photo

Device Setup Select Options Select Layers Run

Select Options


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Select Layers


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14. Exercise 8: Create Parts Library

In this chapter we will learn some basics of creating parts and storing them in the parts

library. Although the library consists of many common parts in the general design, very

often you need to create some parts to be used in your own design, and hence build up

your own library.

When you are creating a new part you must always remember that there are two separate

entries you will need to make. These are :

1.

The Part Decal ---A Part Decal is the footprint of a component used to display the

component at the screen or on a plotter. You can create your own

part decals with the Create Part Decal command . These will be

saved to the Part Decal database of the User Library. Outlines and

part Stack assignments for a part Decal are included in the Part

Decal database.

2. The Part Type --- The Part Type database contains the electrical data for each part in the

database. Electrical data consists of gate information, pin information,

technology, ground and power pin identification , and other related item

, Each part is entered into the Part Type database and is cross referenced

to its associated Part Decal by the Part Decal name contained in the part

type . Create and modify the part type data with the Create, Part Type

routine of PADS .

The Same Part Decal can be used for many different parts . Part Decal DIP14 , for example ,

is the footprint for a 14 pin DIP and can be used on all 14 Pins IC contained in the in the

part type database in either the User area or the Standard area .


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14.1 Create and Setup a New Library

PADS shops with three libraries called:

TTL ... for 5400 and 7400 series parts.

STD ... for all but 5400 and 7400 series parts.

USR ... for parts you create.

Each of these libraries consists of four database :

1. 2-D line ( non - electrical drawn items )

2. CAE Decals ( contain pin and gate information )

3. Part Decals ( physical extent of the part )

4. Part Type ( The information needed to access the different databases )

File Library Create New lib ( Your Student Number ) OK

Library list Add (Your Student Number) OK

Select the library and press UP bottom

to rearrangement the select position of library


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Setup Library

Choose File/Libraryto open the Library Manager. Use the library Manager to perform operations

associated with editing and copying the contents of libraries,

When you add a part to the design, you are actually retrieving information about that part from the library.

The Manage Lib Listdialog box contains a list of libraries to search.

Choosing Manage Lib list, select the library and press Add bottomto add the training library

( enc_training_e.pt9 ) from C:\PADS Projectsor other location .


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14.2 Create a Through -Hole Component ( TEST_PAD )

14.2.1 Create Part Decal ( Terminal )

( G 100 ) Tools PCBDecal Editor S 0 0

Drafting icon Terminal

Place First Pin Left mouse button to place First pad

14.2.2 Create Part Decal (Outline)

(G 50) Set coordinates Create polyline

2-D line icon

[

Select the polyline Click right mouse button Split Swap Orthogonal

* From -50, 100 Cut to 0 , 100 and 0, 200 to -50 ,200 .

The Coordinate of Outline

X Y

-50 50

950 50

950 250

-50 250


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Select the polyline Click right mouse button Pull Arc

* From 0,150 to 50 , 150

14.2.3 Modify Pad Stack

Padstack changes the size, shape and drill hole of component parts and vias in the

current design .

Setup Pad stacks


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* Layer : T (top) , B (bottom) , I(inner) or a specific layout number .

* Diameter : is the current design units.

* Shape : Oval Finger, Rectangular, Round, Square, Annular, Odd

* Drill : is the finished size of the drilled hole for the pad after plating .


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14.2.7 Create Part Type

Press Yes to Create a new Part Type.

Press Save As.. to set the Name of Part Type

14.2.8 Edit Part Type

Files Library Part icon Edit


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Part information appear Pins

Part information appear Pin Mapping


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On the Form:

Logic Family:

Logic Family Ref. Logic Family Ref.RES( RESISTOR ) R TRX( TRANSISTOR ) Q

TTL( TTL IC ) U XFR( TRANSFORMER ) T

CMO( CMOS IC ) U CHO( CHOKE ) L

ECL( ECL IC ) U CON ( CONNECTOR ) J

ANA( ANALOG IC ) U RLY ( RELAY ) RL

CAP( CAPACITOR ) C SCR( SCR ) TH

DIO( DIODE ) D TRC (TRIAC ) TH

ZEN( ZINER ) Z SWI ( SWITCH ) SW

UND( UNDEFINED ) ?

Non -Number Pin Number: define the pin name of pin number.

PCB Decal and Alternators: define the Part Decal that will be called up. When the part

type is called up on the board , the placement command

of move, alternate will allow the designer to select

between the part decal .

14.2.9 Save Part Type

Press Save As.. to set the Name of Part Type


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Add a Component

14.2.10 Add a Component

ECO Select ( TEST_PAD ) Add Place ( U1 & U2 )

14.2.11 Change to alt . decal

Select Component ( U2 ) Click Right mouse button

14.2.12 Check the pin name

ECO Add Connection

Design Add Route


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14.3 Create a Surface Mount Component ( S\SOT23 )

Create Part Decal ( Terminal )

( Set Design Grid ) Tools PCB Decal Editor


S 0 0 Place First Pin Left mouse button to place First pad .

Save as Your Student Number libraries: S\SOT23

Pin 1 0 , 0

Pin 2 -75 , 0

Pin 3 -37 , -120

The Coordinate of Outline

X Y-100 -175

25 -150

25 25

0 50

-100 50


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Create Part Type( S\SOT23 )

Files Library Part icon New

Save as Your Student Number libraries: S\SOT23


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14.4 Create a Surface Mount Component ( S\PWR )

Create Part Decal ( Terminal )

( Set Design Grid ) Tools Decal Editor


S 0 0 Place First Pin Left mouse button to place First pad ..

Save as Your Student Number libraries: S\PWR

Setup Display Color

Set Background to Black

Set Copper TOP to Green

Drafting icon 2-D line icon New Polygon Complete

Drafting icon copper icon New Polygon Complete

Pin 1 0 , 0

Pin 2 0 , -100


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14.5 KS5915

14.6 1M_DRAM


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14.7 TM-062

14.8 SMT_LED


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15. Exercise 9: SMT Music Board


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15.1 Create Board Outline

S M T Music Box 001-010-CThe coordinates ofoutline

Setup Display Color

Set Background t o Black

Set Top ( Layer 1 )COPPER to YELLOW.

Set Top ( Layer 1 ) TEXT to YELLOW.

Set Bottom ( Layer 2 )TEXT to BLUE

Set Drill Drawing ( Layer 24 )TEXT to PURPLE .

Set Silkscreen Top ( Layer 26) TEXT to REDSetSolder Mask ( Layer 28) TEXT to GREEN

15.2 Create Text

Level Size Text

0 H200 W10 REDUCE TO 2.000 INCHES

0 H100 W8 REDUCE TO 3.850 INCHES

0 H200 W10 S M T Music Box 001-010-C

1 H100 W10 MUSIC BOARD / DOOR BALL

1 H100 W 10 001-010-C

1 H 100 W8 THE HONG KONG POLYTECHNIC UNIVERSITY

1 H150 W10 COMPONENT SIDE

2 H150 W10 SOLDER SIDE

24 H150 W10 DRILL DRAWING

26 H150 W10 SILKSCREEN COMPONRNT SIDE

26 H100 W10 MUSIC BOARD / DOOR BALL

28 H150 W10 SOLDER MASK

X Y0 100

100 0

3750 0

3850 100

3850 1900

3750 2000

100 2000

0 1900

( 220,1730

( 220 , 190 ) ( 3610 , 190 )

( 3700 , 1550 )

( 3610 , 1730 )


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15.3 Load the Parts and Parts Placement

Add a Component

Use theAdd component iconto create a design by directly placing the parts on the

board and without starting a netlist input.

Click Eco icon Add Component M\SC\3528 Add C

C1, C2, C3


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Rename Component

Click Eco icon Select Component


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*PADS-PCB

*Part*

C1 M\SC\3528

C2 M\SC\3528

C3 M\SC\0805

C4 M\S\1206

C5 M\S\1206C6 M\SC\7343

C7 M\S\1206

JP1 HD3

JP2 M\S\PWR

P1 PAD_3MM

P1 PAD_3MM

P1 PAD_3MM

P1 PAD_3MM

R1 M\S\1206

R2 M\S\1206

R3 M\S\1206

R4 M\S\1206

R5 M\S\1206

R6 M\S\1206R7 M\S\1206

SP1 M\S\SP

SP2 SPEAKER

SW1 SW_PUSH

TR1 M\SOT-23

TR2 M\SOT-23

U1 DIP16

*End

Component Reference and part value

Reference Part Type

C1 M\SC\3528,4.7UF

C2 M\SC\3528,4.7UF

C3 M\SC\0805,47P

C4 M\S\1206,0.02UF

C5 M\S\1206,0.1UF

C6 M\SC\7343,100UF

C7 M\S\1206,0.02UF

JP1 HD3

JP2 M\S\PWR, HEADER2

P1 PAD_3MM

P2 PAD_3MM

P3 PAD_3MM

P4 PAD_3MM

P5 PAD_3MM

R1 M\S\1206,180K

R2 M\S\1206,100K

R3 M\S\1206,100

R4 M\S\1206,100K

R5 M\S\1206,56K

R6 M\S\1206,1M

R7 M\S\1206,330K

SP1 M\S\SP

SP2 SPEAKER

SW1 SW_PUSH

TR1 M\SOT-23,9014

TR2 M\SOT-23,9012

U1 DIP16,UM3482

The coordinates of the PAD_3MM pins are:

P1 3610 , 190

P2 220 , 190

P3 220 , 1730

P4 3610 , 1730P5 3700 , 1550

The coordinates of the SPEAKER pin is:

SP2 1230 , 000

Place Opposite Parts:

Select the component Right mouse button Flip Size


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15.4 Add Connection

ECO Edit/Find ( R2.2 ) Click Edit/Find ( R2.3 ) ..

PADS-PCB

*Net

*Sig N1

R2.2 R3.2 C5.1

*Sig N2

C2.2 R1.2 U1.7

*Sig N3

U1.9 R3.1

*Sig N4

C5.2 R7.1*Sig N5

U1.12 R6.2 R7.2

*Sig N6

C3.1 R5.1 R4.1

*Sig N7

C3.2 U1.13

*Sig N8

R5.2 U1.14

*Sig N9

R6.1 C6.2 TR2.C C7.2

C4.1 TR1.C

*Sig N10

R4.2 U1.15

*Sig N11U1.10 C7.1 TR2.B

*Sig N12

C6.1 SP1.2

*Sig N13

JP1.2 U1.3

*Sig N14

C4.2 U1.11 TR1.B

*Sig N15

SW1.2 U1.4

*Sig VCC

SW1.1 JP2.1 JP1.3

U1.2 SP1.1 TR2.E

C2.1 R1.1 *Sig VCC

C1.1 U1.16 R2.1*Sig GND

U1.8 JP2.2 TR1.E

JP1.1 C1.2 U1.5

*End

Move Part Name:

Click Part name Move

The Move name command is used to move the reference designation and part typenames from their default positions on the part decal to a new location outside the part

decal such that the names can be seen when components are installed on the board.

Save Job:

File/ save as SMTPLACE.PCB


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15.5 Connection Routing :

Setup Routes Width :

Setup Design Rules Net VCC and GND Set width (40)

The Width of GND and VCC nets will change to 40 mil.

Manual Routing ( Add Arc ) :

Setup Preference Design Miters ( Arc and Auto Miter )

Pick up the I ntersection Point of two segment


Manual Routing ( UNROUTE ) :

Click the trace Press Del from Keyboard

Segment ( one corner ) Route ( point to point ) Net ( all connect of net )


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15.6 Create Copper Pour

Right Mouse button

Draf ting Create Copper Pour Outli ne

Create Copper Pour Outline

Drafting

Set width : 10 , Layer : Top , Net : GND Press OK Yes

Copper Pour

15.7 Checking

Tools Verify Design Clearance and Drill

15.8 Save Job

File/ Save as Smtmusic.pcb

15.9 CAM ( Computer Aided Manufacturing )

Cam Add Penplot Artwork Layer

1. Artwork : layout 1 ( Component Side )

2. Silkscreen : layout 26,29 ( Component side & Solder Side )

3. Solder Mask : layout 24 ( Component Side )

4. Solder Mask : layout 28 ( Component Side )

5. Create NC drill File


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16. Assignment 1: Power Supply


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Design Criteria :

1. One Layer Board ( Layer 2 )

2. Copper Pour

3. Single Route > 15 mil.

4. All Segments must be ARC.

5. All spacing except Copper Pour to be 15 mils, Copper Pour clearance to be 20

mils

6. Board Size must be less than 2 inch x 2 inch.

7. Place Mounting Hole ( PAD_3 MM ) in each corner .

8. Place dimension ( REDUCE TO ....... ) outside of the board.

9. Re-number the layout.

10. Place text Solder Side , Silkscreen , Solder mask outside of the

board.

11. Place text 0 -25 V Power Supply on the Component Side in all layers .

12. Create all Plotter files -- Solder side, Silkscreen....

13. Preview all plotter files.

**** Use ECO -- Add Conn command to link up all connections and

perform routing.

Mapping :

Ref Part Type

C1 CAPT\RAD\1\2

C2 CAPT\RAD\1\2C3 CAPE\RAD\2\4

C4 CAP

D1 DIODE

D2 DIODE

D3 DIODE

HD1 CON\SIP\2P

HD2 CON\SIP\2P

R1 R1/4W

U1 TO-220\UP

VR1 CON\SIP\3P


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17. Assignment 2: SMT - Amplifier


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Design Criteria :


2. Copper Pour

3. Single Route > 15 mil.


5. All spacing except Copper Pour to be 15 mils, Copper Pour clearance to be 20

mils.



8. Place Dimension ( REDUCE TO ....... ) outside of the board .


10. Place text Solder Side , Silkscreen , Solder mask ......... outside of

the board

11. Place text SMT Amplifier on the Component Side in all layers.

12. Creat all Plotter files -- Solder side, Silkscreen....


***Use ECO-- Add Conn command to link up all connection and perform

routing.

File Path :

Netlist files --- 1. C:\PADS Projects\AMPPART.ASC

2. C:\PADS Projects\AMPCONN.ASC

AMPPART.ASC:

*PADS-PCB

*Part*

C1 CC0805

C4 SMTC100

C3 CC1210

R1 RC1206

R2 RC1206

C2 CC1210

VR1 ST23A

HD1 SMTHD2U1 DIP8\SO

HD2 SMTHD2

LS1 SMTHD2

*End

AMPCONN.ASC:

*PADS-PCB*Net

*Sig N1

R1.1 HD1.2

*Sig N2

R1.2 C1.1 VR1.A

*Sig N3

R2.1 U1.1

*Sig N4

R2.2 C3.1*Sig N5

VR1.WIPER C2.1

*Sig N6

C2.2 U1.3

*Sig N7

U1.5 C4.1

*Sig N8

C4.2 LS1.1

*Sig N9

U1.8 C3.2*Sig VCC

HD2.2 U1.6

*Sig GND

HD2.1 C1.2 HD1.1

VR1.B U1.2 U1.4 LS1.2

*End


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Mapping:


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Create Parts:

17.1 SMTC100

= 7343


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18. Assignment 3: SMT - Recorder


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Design Criteria :


2. Copper Pour

3. Single Route > 15 mil .


5. All spacing except Copper Pour to be 15 mils , Copper Pour clearance to be 20

mils .



8. Place Dimension ( REDUCE TO ....... ) outside of the board .


10. Place text Solder Side , Silkscreen , Solder mask ... outside of the

board.

11. Place text SMT Recorder on the Component Side in all layers.

12. Create all Plotter files -- Solder side, Silkscreen....


****Use ECO --Add Conn command to link up all connection and

perform routing .

File Path :

Netlist files --- C:\PADS Projects\SMTREC.ASC

Part :

Ref. Part Type

BATT. HD2

C1 CC05

C2 CAP_C1

C3 CC05

C4 CC04

C5 CC04

C6 CC04

C7 CC05

C8 CAP_C1

C9 CAP_C1

C10 CC05

C11 CAP_C1

C12 CC05

C13 CAP_R1

C14 CC05

C15 CAP_C1

C16 CC05

C17 CAP_R1

C18 CC05

C19 CAP_C1

CONN1 SIP\7P

CONN2 SIP\7P

D1 DIODE

D2 DIODE

DCJACK JACK1

JACK1 JACK2

LED1 LED

R1 R1/4W

R3 R0805

R4 R0805

R5 R0805

R6 R0805

R8 R1/4W

R9 R1/4W

R13 R0805

R14 R0805

R16 R0805

R17 R0805

R18 R0805

R19 R0805

S2 SW_TACT1

S3 SW_TACT1

S4 SW_TACT1

S5 SW_TACT1

SPK HD2

SW1 SWSPDT

U1 TK11650

U2 KS5915

U3 1M_DRAM

U4 LM386-SO

X1 MIC

Y1 DCRK640

Mapping:


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pads layout

Documents