11 Nov
2010
11 Nov
'10
12:26 a.m.
On 10/11/10 23:09, Steven Hirsch wrote:
On Wed, 10 Nov 2010, Philip Pemberton wrote:
Yes -- A 0.5mm pitch, 80-pin TQFP.
The FPGA is a 0.4mm pitch, 144-pin TQFP.
The power controller chip (TPS75003) is a QFN, which means it doesn't
have pins, just a bunch of pads on the bottom of the chip. Hence why I
said you need a hot-air station to solder it down...
- PIC microcontroller soldered down and
pre-programmed. Add ?5. This
includes programming the bootloader into the PIC, and means you won't
need a PIC programmer to bootstrap the DiscFerret.
Is the PIC an SMD part? Also, can you post any photos, board layout pictorials
or schematics?
The schematics are in the version control repository in EAGLE format.
The URL is http://hg.discferret.com/hardware .
I've uploaded a PDF version here:
http://www.discferret.com/pdf/discferret_sch.pdf
And a PDF of the PCB layout here:
http://www.discferret.com/pdf/discferret_pcb.pdf
The PCB layout is about twice real size; that particular PDF is the
"component location plot" I was going to include with the later-rev
boards...
Thanks,
--
Phil.
classiccmp at philpem.me.uk
http://www.philpem.me.uk/