[Libre-soc-bugs] [Bug 508] decide package size and pin allocation for 180nm ASIC

bugzilla-daemon at libre-soc.org bugzilla-daemon at libre-soc.org
Wed Sep 30 13:36:44 BST 2020


--- Comment #3 from Luke Kenneth Casson Leighton <lkcl at lkcl.net> ---
(In reply to Staf Verhaegen from comment #2)
> We should at least be able to pick any one of the packages listed here:
> https://www.greatek.com.tw/product6-en.html

ya with you.  ahh... can we pick a JEDEC package? i'd recommend MS-022

* QFP-128
* 28mm x 28mm
* 0.8mm pin pitch

0.8mm pitch pins are chunky and easy to do with a hot-air gun.

that ok with you?  or do we have to go with Greatek Electronic?

those Greatek Electronic ones look... specialised.   0.4 to 0.6mm pin
pitch is... tricky to solder if you have to do it by hand.  plus, their
128s are not a square package.

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