XS-L1A TQFP 128 Pins and Links

Technical discussions around xCORE processors (e.g. General Purpose (L/G), xCORE-USB, xCORE-Analog, xCORE-XA).
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Folknology
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Re: XS-L1A TQFP 128 Pins and Links

Postby Folknology » Fri Jan 21, 2011 1:54 am

The '128 has 64 IOs the '64 has only 42.
Slight correction the L1-64 has 36 I/O pins D0-27,D32-39. Notice the missing D28-31 which breaks ports 16B and 8C and completely omits 4F. I think Xmos trying to squeeze the pins into this package figured having all the 1 bit ports were more important, I would probably concur, although a QFN72 would have been even better IMHO and included up to D43 giving 44 I/Os
regards
Al
ale500
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Postby ale500 » Fri Jan 21, 2011 4:31 pm

Ups, yes. My bad. 36 IOs for the 64 pin version.

They should stick with 64 pins TQFP. Those QFN packages are not that convenient for hand solder...
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Folknology
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Postby Folknology » Fri Jan 21, 2011 8:10 pm

They should stick with 64 pins TQFP. Those QFN packages are not that convenient for hand solder...
Hmm TQFP with ground paddle is also a pain in the arse for hand soldering and easy to get wrong, so are the many 0402 decoupling caps that it requires. I tend to use hotplate or oven its much easier and less error prone. My vote would be for a QFN72 and the missing I/O, but perhaps a choice of both packages would be best!

regards
Al
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lilltroll
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Postby lilltroll » Sat Jan 22, 2011 2:48 pm

I still havn't tried my

http://www.cooperhandtools.com/onlineca ... GW_300.jpg

made for drag soldering. The tip is concave. The 128 pin would be a perfect candidate.

Maybe time to buy a card from ale500 - then I get to play with a FPGA as well.
Probably not the most confused programmer anymore on the XCORE forum.

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