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Author Topic: AS1130 Ongoing Discussion 132 Individually controllable, PWM LED driver  (Read 13231 times)
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Wisconsin
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If I did that, then I'd have to delete all my posts.  (Seriously whats up with that?)

Okay sounds good, I have a lot to do today (Speech -> clean room -> E-mail friend -> Finish internship cover letter)  But i might be able to get all that done in 5 or 6 hours.  Then I can make a build and try the code out.
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It's a shame they only do 1 package for this chip...it probably puts lots of designers off, not to mention hobbyists.
Well you can also get the Ssop-28 package which is available too.
that will solve your problem with soldering. The package was available shortly after the wlp.
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It's a shame they only do 1 package for this chip...it probably puts lots of designers off, not to mention hobbyists.
Well you can also get the Ssop-28 package which is available too.
that will solve your problem with soldering. The package was available shortly after the wlp.

OOps...yep forgot about that... smiley-red smiley-red
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I am very slowly designing a 4-layer board with some AS1130's. The biggest pain has been finding out that my usual cheap PCBAs don't want to do 0.5mm BGA/WLCSP.

It's a shame they only do 1 package for this chip...it probably puts lots of designers off, not to mention hobbyists.

They do?  I see a 28 TSSOP

AS1130-BSST

http://www.digikey.com/product-detail/en/AS1130-BSST/AS1130-BSSTCT-ND/3028666
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It's a shame they only do 1 package for this chip...it probably puts lots of designers off, not to mention hobbyists.
Well you can also get the Ssop-28 package which is available too.
that will solve your problem with soldering. The package was available shortly after the wlp.

OOps...yep forgot about that... smiley-red smiley-red

we know
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I know about the TSSOP, but it's actually way too big for my application.
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Unfortunately, to this day, I haven't been able to find anybody who can make a board that made for a WL-CSP footprint.
Its more of a massive company, large production kind of capability. 

If anybody knows of some fabricator, throw it out.
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Most places that can handle 4mil rules can do it, but I still have to cheat by altering the shape of the outer BGA pads. A couple of PCBAs have reviewed this and seem to think it will work fine; one even said it's approximately what they would have done to my Gerbers without my asking.

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Hmmmm, my board isn't lighting up.
Do you really need the IRQ and the RSTN hooked up for your PWM sketch Hex?
If not, my circuit board must suck
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Sorry about the delay...been away for a few days.... smiley-cool

The RSTN pin needs to be pulled to logic 1 or the chip will keep resetting.

The IRQ pin has no effect whatsoever if you're using the PWM example code. (It's not used).

Are you using the code "as is" or modified?

Also let's see your hardware/schematic... smiley-wink
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The code is not changed at all. 
Okay, I didn't solder a pin to my RSTN hole.  I'll see what I can do about getting one soldered on after some class tomorrow.  I just tried to heat up my iron in my dorm and I smelled awful.  Didn't want the alarm to go off.

Schematic...Lemme see...I can't find it right now, BUT! I know its right.  I went over it about seven times.  I always do a check like that before I send something to fab.
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Astron will do WLP for example:
http://www.astron.co.at/
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Thanks for the link Mr Force...good to know for future reference.
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Lol, wow I feel dumb.  turns out a few of my pins weren't soldered to the pad on the AS1130.  Should look closer next time.
Good news is I have to go home to get my suit so I can solder those down.  I'll report back when I have it soldered down
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I had a similar problem with one of my chips on the 528 LED board, it was intermittently working and after a lot of messing about I found 1 pin was not soldered properly!.

Remember it for the future (like I didn't)  smiley-mr-green
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