hi everyone ,
how to create BGA and how to add the pin number A1,A2,......like this
how to add fanout for BGA
i have not licence in PADS 2005 the following options BGA Fanout,BGA router.
please guide any one ??
You can still generate the part wihthout those options.
Open PADS Layout 2005, Select <Tools><PCB Decal Editor>
open the Drafting Toobar and select the Wizard. the BGA/PGA tab will be on the right.
i created BGA manual because i have not wizard licence for BGA,i added pin number for each pad 1,2 ,3,and corresponding alphanumertic i gave A1,A2,A3....like that after saving i could not see the alphanumertic for perticular pad how to solve this problem ???
See if the alphanumeric numbering shows up in Layout; the Decal Editor may still show numeric; there may be additional setup needed in the Part Editor. I'm not sure why this is such an issue for Mentor. They made improvements in 2007 or V9 but I'll still see some weird things occasionally. If you need to support alphanumeric you might need to upgrade.
thanks for your reply and one more things how to add VIA in this BGA i have not licence for BGA wizard or BGA fanout. any short cut or any script is there for adding via in this BGA ???
I do not know of any. On the old workgroup (I believe it is still searchable) a few members had posted their guidelines for via placement and trace/space for various BGA sizes. Let me know what ball spacing you are working with and I may be able to post a copy.
in BGA pitch is 1mm and airgap is 23.7 mil so in this BGA pin counts are 256.so i need to add via for each pin so it is too difficult so i need any short cut ???
Here are BGA recommendations that were posted by Rick Shaich a while back; I'm just passing them along.
"Also for reference are some writings Tom Hauser has done on this. He has a very different approach to doing his BGAs than I do. I personally don't find them very useful other than to understand how to go about thinking about it. His breakouts tend to be targeted at larger BGAs and higher layer counts (Military? Telecommunications?) than I do. My consumer products world doesn't allow for or need as small trace & space or as dense break outs as his. But if your doing huge BGAs on large layer count PCBs his rules are probably more usable than mine are."
The wizard works good, but remember you can copy a trace and via. Works great when breaking out BGAs. Set your grid&snap to half the BGA ball spacing. Add one trace from BGA pad and end with Via. Set filter for ONLY Traces and Vias (and Top layer if necessary). Select the trace and via with Ctrl-Select(left click), then Ctrl-C to copy. Right Click, Select next pad and paste with Ctrl-V. You may need to select next endpoint (tab) so the free end of the trace is on the cursor. Note you can window and select a group of traces and vias...e.g. copy a whole row of breakout traces with vias and paste them on the next row (or quadrant). Next, select an entire BGA quadrant of traces and vias right click and rotate 90 degrees and paste a new quadrant of breakouts. Almost as quick as the BGA wizard and allows you to customize your breakout. Trace Copy & Paste also works for connector breakouts, even complete IC routing for multiple "channels" (almost a poor man's ReUse). RLS2004
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