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Re: XS-L1A TQFP 128 Pins and Links
Posted: Fri Jan 21, 2011 1:54 am
by Folknology
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
Re: XS-L1A TQFP 128 Pins and Links
Posted: Fri Jan 21, 2011 4:31 pm
by ale500
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...
Re: XS-L1A TQFP 128 Pins and Links
Posted: Fri Jan 21, 2011 8:10 pm
by Folknology
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
Re: XS-L1A TQFP 128 Pins and Links
Posted: Sat Jan 22, 2011 2:48 pm
by lilltroll
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.
