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drawing schematic from data sheet

I am beginner in Schematic capture and board design. As of now I know the flow of board design and I am used to OrCad tool for about one month and i know the basic(placing parts ..) and making a schematic by seeing the schematic sheet of any IC.

For an IC (Sii 164) I am unable to get the schematic and in their data sheet there isn't any schematic available or i found a incomplete one (non i2c - strap mode configuration). Now i think I have to make the schematic from the given data sheet. How far is it possible to do this?

Please help me by providing pointers.

Thanks

S45

Reply to
S45
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You'll need to make your own library to add your own components.

With OrCad open and no projects loaded, use File ->New -> Library

Happy drawing.

Cheers

PeteS

Reply to
PeteS

You can create your own component for the IC you are looking and you can assign a footprint to it (for example DIL40 or SOIC or whatever) and include it in a library. For most of the programs this procedure is easy (not that I know one that it is hard :-))))

Regards GM

Reply to
GM

If you have access to a.b.s.e, I've just posted a PDF of a typical part I do quite regularly - in this case a CoolRunner II CPLD from Xilinx -

144 pins, which is really low count these days.

One thing; if you do more than a few pins on a part, try and get someone to review it for you.

Cheers

PeteS

Reply to
PeteS

Hi

Yes I know how to create library, but I wish to know to how to represent/draw the diagram from the provided data sheet(taking into consideration of parameters, signal conditions etc) in case the IC data sheet doesn't provide the "schematic diagram". I hope my question is clear(drawing schematic from the pin details and functions). Please provide some pointers.

Also PeteS, what is a.b.s.e , how to get access to it?

Thanks S45

PeteS wrote:

Reply to
S45

a.b.s.e. is alt.binaries.schematic.electronic and is not accessible from google groups - you need a newsreader.

As to getting started - there are some fairly usual methods of making parts. Signal groupings are the biggest thing I look for. What I usually do NOT do is put the pins in physical order - the schematic symbol should reflect functionality, not necessarily pin position.

I just got the datasheet and it looks pretty straightforward.

Cheers

PeteS

Reply to
PeteS

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