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drawing schematic from data sheet

S

S45

Jan 1, 1970
0
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
 
P

PeteS

Jan 1, 1970
0
S45 said:
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

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
 
G

GM

Jan 1, 1970
0
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?

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
 
P

PeteS

Jan 1, 1970
0
PeteS said:
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
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
 
S

S45

Jan 1, 1970
0
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
 
P

PeteS

Jan 1, 1970
0
S45 said:
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

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
 
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