11 Nov
2010
11 Nov
'10
4:11 a.m.
On Thu, 11 Nov 2010, Philip Pemberton wrote:
On 10/11/10 23:09, Steven Hirsch wrote:
Ouch. So it's essentially 100% SMD? I'll have to wait for assembled
units. I have neither the requisite skills nor equipment.
Drat.
--
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