Also, meant to ask: Brian's BOM includes the Industrial variant of the CPLD. The commercial variant is almost $1 cheaper and seems well within tolerance
(voltage min is 3 instead of 2.7, temp is 0 - 70 C instead of 40 - 85 °C) Any reason not to sub this part in? -Josh On Wed, Oct 18, 2017 at 4:56 PM, Josh Malone <[email protected]> wrote: > Thanks. I'm going to just order new parts and try again. > > On Wed, Oct 18, 2017 at 4:49 PM, Brian Brindle <[email protected]> wrote: >> 11.7k on 2 of mine. >> >> >> On Oct 18, 2017 4:25 PM, "Stephen Adolph" <[email protected]> wrote: >>> >>> I can try to measure it later today for you. >>> >>> On Wed, Oct 18, 2017 at 4:24 PM, Stephen Adolph <[email protected]> >>> wrote: >>>> >>>> either the chip is a dud, or you have soldered it down in the wrong >>>> orientation (which is kinda easy to do)... Do you have more CPLDs? >>>> >>>> On Wed, Oct 18, 2017 at 4:22 PM, Josh Malone <[email protected]> >>>> wrote: >>>>> >>>>> Thanks for the leads. >>>>> >>>>> I removed the CPLD and the resistance from 3v3 to gnd went to open; >>>>> repopulated it and it went to 3-ohms. Dunno what to try next. Maybe >>>>> put the same CPLD back on an original REX board (non-castellated) and >>>>> see what happens. But, I'd *really* love for someone to measure the >>>>> resistance on a known-good REX board and let me know what it should >>>>> be. Assuming the CPLD draws <= 1ma (datasheet says 17uA standby), R >>>>> should be over ~3k. >>>>> >>>>> -Josh >>>> >>>> >>> >>
