Components for MultiSim

[lacy]

I can answer one of your questions. A footprint is the mechanical outline of the components package including the solder pads. Footprints are used in PCB Layout like Ultiboard to represent where a component and its pads/holes mounts on the board. If you look at most circuit boards and see the outline of the part drawn on it with the pads/holes then this is what is called the footprint. All components have a PCB footprint, but not all of them are in Ultiboards database. Sometimes you have to make your own and that is where the manual/turotials come in handy. Even now I still have to refer to these in order to create my footprints as I can't remember each and every step.

I hope I explaned this well enough.

[lacy]

To answer another part of your question. The component package in the datasheet is the label you would look for to select a footprint within Multisim. These would be labeled like DIP14, TO92, TO3. These are just example off the top of my head, but hopefully this will get you going in the right direction.

[00962]

Dear sir, I have project in micro processor and have these question hoping that u will help me : 1*i made intel 8088 microprocessor as a new component in multisim 10th edition ,but i have to test it in ultiboard as pcb and i don't know how ?what i have to do ? "i need all step to make pcb ?" 2*is footprint =package? 3*in tutorials of Creating a Custom Component in NI Multisim: http://zone.ni.com/devzone/cda/tut/p/id/3173#toc2 in "Step 2: Enter Footprint and Package Information" i can't find footprint from datasheet 4*what does footprint mean? 5*is the footprint the same as the specification numbers of pins ,input,output,gnd,vcc,"? 6*multisim databse updgrade?how? number the answer please , thanks again for ...

[00962]

i realy appreciate your help .. thanks very much for your reply,, 1*multisim databse updgrade?how? 2*i need all step to make PCB in (ultiborad) for any circuit ? when i transfer from multisim to ultiboard i can't open it ..maybe i have to do it mannualy how ????????

[lacy]

I hate to do this, but what you need to do in order to learn how to make a PCB with Ultiboard is to read the manuals that should have been included with it. They are located in C:\Program Files/National Instruments/Circuit Design Suite 10.0/documentation. It would be almost impossible for anyone to try and tell you this on the forum.

As far as the Multisim to Ultiboard Transfer problem. If you have a circuit in Multisim then you need to got ot the top menu bar and click TRANSFER>Transfer to Ultiboard 10. The only way this would not transfer is if you do not have a footprint selected for the component or it is a virtual component like the power sources.. In the case of a missing footprint you would have to select one from the database if it is available. If not then you have to create it in Ultiboard first and there tutorials on the NI Website on how to accomplish this.

I hope this is of some help.

[horani]

hi

happy new year 2008 before i start anything

& now i wanted to check if the DPI40 components ( foot print database ) are ok to be used in 8088 MP as they were it's foot print or should i design it through ultiboard according to it's architecture notes to make a foot print database for it & as an another question does the pins spaces at the 8088 mp & other chips differ or it's just the same of DPI40 as a default pins spaces ?? 

if there is any site to help me with it as an additional help it'd be great & appritiable from you .

[lacy]

I am going to try and answer this, but you will have to forgive me if I am not understanding you clearly.

If these footprints are the generic footprints then I would be inclined to believe that they would work and you probably wouldn't need to edit them. This is why they are generic because they fit any IC that uses that package. I may be wrong but this is what I think.

There is one other thing. If you find an IC with this package within Multisim and you need to modify it for your schematic to reflect the pin names, then you can do this with the symbol editor. Just click on the component and select PROPERTIES>EDIT COMPONENT IN DATABASE>SYMBOL>EDIT. Then the symbol editor will come up and edit the symbol and then save it to your user database.Be sure to rename the component to reflect its true name which in this case would be an 8088  Once you put this in your schematic the footprint will already be assgined and will be automatically transfer to Ultiboard.

I hope I helped on this as this is about all I can tell you on this subject.

[00962]

Hi... first i wanna to say "Happy new year ",and thanks for your reply ,i realy appreciate your answere . i have small question : when i edit intel 8088 (as new component in multisim10), 1-for using this component for both simulation and layout (model and footprint) 1st step i have to choose "Component Technology" I can't find (HMOS-II)for intel8088 what i have to do? http://zone.ni.com/devzone/cda/tut/p/id/3173 thanks again with best wishs

[lacy]

I am going to attempt an answer here and I may be wrong about this, but I am fairly confident that what I am going to tell you is accurate.

You cannot simulate an 8088 microprocessor in Multisim. Even if you could find a model for it, the processors requires an external program to instruct it on how to go about doing its task. There are no provisions for programming it in Multisim. The MCU Module only supports the processors/pics that were included with it and no more can be added to it. So basically you can create this component for layout/schematic entry purposes only since it will not simulate.

If after reading this you still wish to try it, then there are no HMOS Technology available under the Component wizard. You are limited to what is in the list.

I hope this helps some.

[kittmaster]

Lacy, you don't have to be unsure, you are correct. The MPU libraries and dll's are specific to the processor and are unique to each processor it serves. Unless NI opens sources the tools to create MPU tools, the only way to simulate the MPU's are based on what comes with the MPU package......I'm sure NI will chime in to back these two posts up.

BTW.....happy new year!