IO Pads

[Saran]

Hey,

I have a small question. I am using AMI 1.6 u technology on some
designs which I have get fabricated at a later stage.

I don't find the symbols and other IO pad related stuff. Where can I
get them? Should I write to MOSIS customer support? Can I get the IO
pads/blankpads/VDD pads... some place??

Regards,
Saran

 

[G Vandevalk]

This is potentially a tricky problem

Simple I/O pads (i.e. just a pad ) is not strictly a device. Vendors often
do not extract them as devices
at the base level. All they see is metals and a PAD opening.
What I like to do is to create a device (called PAD) that has 1 terminal.
This can cause certianCAD programs to get upset because they like to prune
"floating deviced"
When running a macro level extract, you could have a "I/O PAD" macro but
this might be problematic
when attempting to verify flat.
One solution I have used with great success is to embed the idea of
deliberate metal resistors as real
and required layout/schematic entities.
When made, these are as narrow as possible and square.
This means that my "PAD" nodes can be extracted separate from my supply
nodes.

The problem with the above mess is that it requires the foundary extract to
be lined up with the methodolgy and
that is a tough one

-- Gerry



"Saran" <saranyan13@gmail.com> wrote in message
news:6715d7c8.0411101630.7ee22521@posting.google.com...

Hey,

I have a small question. I am using AMI 1.6 u technology on some
designs which I have get fabricated at a later stage.

I don't find the symbols and other IO pad related stuff. Where can I
get them? Should I write to MOSIS customer support? Can I get the IO
pads/blankpads/VDD pads... some place??

Regards,
Saran

 

[Saran]

Thanks a lot Gerry...

Saran

"G Vandevalk" <vdvalk@rogers.com> wrote in message news:<TNKdnVRRDMtpXgncRVn-qw@rogers.com>...

This is potentially a tricky problem

Simple I/O pads (i.e. just a pad ) is not strictly a device. Vendors often
do not extract them as devices
at the base level. All they see is metals and a PAD opening.
What I like to do is to create a device (called PAD) that has 1 terminal.
This can cause certianCAD programs to get upset because they like to prune
"floating deviced"
When running a macro level extract, you could have a "I/O PAD" macro but
this might be problematic
when attempting to verify flat.
One solution I have used with great success is to embed the idea of
deliberate metal resistors as real
and required layout/schematic entities.
When made, these are as narrow as possible and square.
This means that my "PAD" nodes can be extracted separate from my supply
nodes.

The problem with the above mess is that it requires the foundary extract to
be lined up with the methodolgy and
that is a tough one

-- Gerry



"Saran" <saranyan13@gmail.com> wrote in message
news:6715d7c8.0411101630.7ee22521@posting.google.com...
Hey,

I have a small question. I am using AMI 1.6 u technology on some
designs which I have get fabricated at a later stage.

I don't find the symbols and other IO pad related stuff. Where can I
get them? Should I write to MOSIS customer support? Can I get the IO
pads/blankpads/VDD pads... some place??

Regards,
Saran