On Tue, 2008-12-23 at 07:34 -0800, Glenn LeBrasseur wrote: > Hey Keith and Bdale, > > The design looks pretty decent, no glaring flaws I can see. Good thing > since you probably sent the design out yesterday! :)
We were hoping to, but various things conspired to keep us busy revising them. Thanks much for taking a look though; we're having to make a lot of them as it's a 4-layer board and we'd like to avoid iterating too many times. > Software wise sdcc > sounds great. I have used ASxxxx on my 8051 assembly projects with > success, and was planning on getting sdcc up. You probably have enough > 8051 internal ram for what you are doing, but I thought to let you know > of an SPI SRAM part [1] I found in an SOIC-8 form factor. Most > importantly it is now available; I obtained mine from Arrow Electronics > for $1.81 each. As you saw, we' stuck a SPI flash part on for data recording. I'm not tempted to try and figure out how to use a SPI RAM part for program data though. We've got 4KB of data space, which should suffice for the simple stuff we're doing. Bdale and I spent the day reviewing chip foot prints and have quite a few minor updates. Bdale stuck them all on his server: http://www.gag.com/~bdale/tmp/telemetrum/ This directory has postscript versions of the schematic and the pc board along with gerber files and a cnc drill file. -- keith.pack...@intel.com
signature.asc
Description: This is a digitally signed message part
_______________________________________________ psas-avionics mailing list psas-avionics@lists.psas.pdx.edu http://lists.psas.pdx.edu/mailman/listinfo/psas-avionics
