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MMU SMT ADAPTERS - WIP
Posted: 23 Oct 2018 18:13
by exxos
Somewhere I mentioned about the lack of PLCC MMU & GLUE, and that I have small stock of SMT versions which I may build onto the possible future
mongrel motherboard...
Meanwhile, it does look like a SMT to PLCC adapter could be possible...
MMU_RISER.jpg
The problem will be costs involved in getting these made, it could may well end up rather expensive compared to other chips have been, but as they're not so easy to obtain any more, then we need some sort for solution spares..
BEST has the MMU listed as $40, Which is simply ridiculous, like a lot of their prices.. But I am reasonably confident this adapter board would still be around half that price..
Re: MMU SMT ADAPTERS - WIP
Posted: 23 Oct 2018 18:57
by exxos
Looks like it all fits :)
Not to scale ;)
2.jpg
sch.png
Re: MMU SMT ADAPTERS - WIP
Posted: 26 Oct 2018 18:31
by exxos
Totally forgot about this board again...
I've added it into my shopping trolley for PCBs to order :)
Still need to do the GLUE version yet...
0ca7074fa8833efabefb5d21c655291b.png
Re: MMU SMT ADAPTERS - WIP
Posted: 26 Oct 2018 19:43
by exxos
Dang it...
The 80 pin pinout doesn't list the GND connections :roll:
Does anyone have a board they can check ??? I don't seem to have one :(
SMD_GLUE_TROED.PNG
Re: MMU SMT ADAPTERS - WIP
Posted: 26 Oct 2018 22:12
by troed
exxos wrote: 26 Oct 2018 19:43
Dang it...
The 80 pin pinout doesn't list the GND connections :roll:
Does anyone have a board they can check ??? I don't seem to have one :(
Sorry, just switched out my last SMT board last weekend :(
Re: MMU SMT ADAPTERS - WIP
Posted: 26 Oct 2018 22:17
by exxos
troed wrote: 26 Oct 2018 22:12
Sorry, just switched out my last SMT board last weekend :(
dang it.. Someone must have one somewhere.... I've got some ST's at my girlfriends, will try and remember to look tomorrow...
Re: MMU SMT ADAPTERS - WIP
Posted: 26 Oct 2018 22:47
by sandord
exxos wrote: 26 Oct 2018 22:17
dang it.. Someone must have one somewhere.... I've got some ST's at my girlfriends, will try and remember to look tomorrow...
What exactly do you need?
Re: MMU SMT ADAPTERS - WIP
Posted: 26 Oct 2018 22:57
by exxos
sandord wrote: 26 Oct 2018 22:47
What exactly do you need?
Need to know which pins on the SMT 80 GLUE are connected to 0V...
Re: MMU SMT ADAPTERS - WIP
Posted: 26 Oct 2018 23:01
by sandord
exxos wrote: 26 Oct 2018 22:57
Need to know which pins on the SMT 80 GLUE are connected to 0V...
Ah, mine is 68 pins. So there are ST revisions that have a 80 pins GLUE. Learning new stuff every day.
Re: MMU SMT ADAPTERS - WIP
Posted: 26 Oct 2018 23:03
by exxos
sandord wrote: 26 Oct 2018 23:01
Ah, mine is 68 pins. So there are ST revisions that have a 80 pins GLUE. Learning new stuff every day.
yep.. look at the pinout I posted earlier..