Planning next "tapeout"

A project log for Shared Silicon

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shaosSHAOS 12/02/2017 at 04:0310 Comments

According to this page:
in 2018 MOSIS will collect C5F/C5N 0.5um designs on these dates:

So we can choose April 2nd, 2018 as possible next "tapeout" date for our 2nd chip - anybody interested? ;)

Maximal possible size of the die for minimal cost is 4 mm^2 now (it could be square 2x2 mm or 2000x2000 um) and we will order minimal possible quantity - 40. Planned packaging was DIP40, so die may have 40 pads on it (10 pads on each side of the die). Our old pad generator will not work, because last time die had slightly bigger size - 2.2x2.2mm (to meet 5mm^2 limit at that time).

Technically possible to put more pads - if we will keep the same sizes and spacing as last time (100x100um pads with 50um between each other and 25um from pads to border - actually it was recommended size by MOSIS) then we can put N*150 on each side and for 2000um it will be N=13, so it's 13+13+11+11=48 max and now, surprise-surprise, DIP48 is also available as an option for packaging (even though slightly more expensive)!

Now I plan to have everything OPEN SOURCE and fully available on every stage of the work under PUBLIC DOMAIN :)


SHAOS wrote 04/08/2019 at 00:07 point

2nd opportunity in 2019!!!

Project creation, ECCN paperwork and purchase order - before July 8th, 2019
Preliminary deadline for design files - July 22nd, 2019
Estimated delivery - January 20th, 2020

I think we should use this chance...

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Ed S wrote 12/16/2017 at 11:09 point

What does the pricing work out like? How does it change with quantity?

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SHAOS wrote 12/16/2017 at 17:47 point

They do 40 chips for one price or with additional 40 (total quantity is 80 in this case) for slightly bigger price (but less than 2X). For bigger batches a dedicated run must be quoted (I never did that so I have no idea how much it will be).

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Ed S wrote 12/16/2017 at 17:49 point

Thanks... 80 chips is a reasonable quantity for a hobby project, but $100 per chip would be a fairly high price to pay. For some purposes, it might be excellent value, of course.

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SHAOS wrote 12/16/2017 at 18:08 point

it will be twice more expensive than that ;)

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Yann Guidon / YGDES wrote 12/09/2017 at 23:39 point

I'm not sure I'll have #YGREC8 ready by april.....

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SHAOS wrote 04/25/2018 at 08:50 point

and I didn't have enough money to go by my own :(
so next target is August 6th...

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SHAOS wrote 07/30/2018 at 02:20 point

I don't think August 6th is achievable, so now looking at December 3rd...

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SHAOS wrote 01/20/2019 at 21:53 point

So we missed all deadlines in 2018 and now in 2019 they have only ONE opportunity - April 1st ...

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Yann Guidon / YGDES wrote 01/21/2019 at 02:55 point

oh my... I wish I had more time to dedicate to this !!!!!!

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