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Information / general / TT GF180 padframe
Between 08/31/2025 23:59 and 10/01/2025 00:00
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Leo Moser (mole99) 09/19/2025 18:42
18:42
Thanks a lot Sylvain! Just updated the project template.
18:43
The padring now looks like this. Once you have yours we need to double check the bondpad positions. I have updated the padring script to also support pads with arbitrary widths, but for this case it should behave the same as before.
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Can you post the gds ?
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Leo Moser (mole99) 09/19/2025 18:55
Sure! Without fill I assume.
18:56
Something looks wrong from the picture though.
18:57
Wait, the orientation doesn't match.
18:57
It's rotated 180 deg.
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Leo Moser (mole99) 09/19/2025 18:58
Is it? Pin 0 should be bottom left, but let's see... I'm almost at StreamOut.
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Bond pad 17, the first on the right edge at the bottom should be power.
19:00
Ok, I just realized, in the text column I wrote "left" but it's actually "right" ...
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Leo Moser (mole99) 09/19/2025 19:01
I see 😄 Then let me check again
19:02
19:02
Here is the GDS anyways, just for the pad positions
19:05
Alright, rerunning!
19:11
19:12
19:13
Should be right this time!
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Yeah the position of power pads match. The labels (input / bidir / clk / rst) don't but that doesn't matter, all those should be broken out 1:1 without any special consideration. It's important for the breakout that :
  • The PWR VDD AUX are not connected to power rings, but just broken out to pins like other , just with decoupling caps
  • The IO / Core VDD pins are correctly mapped to independent rings with appropriate decoupling.
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Leo Moser (mole99) 09/19/2025 19:23
Might be worth posting in the #cob channel :)
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Pad position is fine, it's distributed equally, so I can make sure to match that ( if for some reason my script doesn't match it already ... ). (edited)
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Leo Moser (mole99) 09/19/2025 19:30
Great! After the script rewrite I had to triple check that this is still the case 😅 But I have yet to try a cell with a different width.
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