On Wed, Mar 12, 2014 at 10:48 AM, d0ct0r <t...@patoka.org> wrote: > > LCD connected to the same MCU. And it has relation to the core clock too. > So, nothing on LCD before I reset entire MCU. I think initial incorrect > core clock reading cause a lot of issues. Probably my only option will be > to implement some external relay and timer to turn on MCU few seconds after > OCXO. Or may be to put 10Mhz oscillator to PCB and connect OCXO output in > parallel to it (not sure if its good idea or it will works). >
Why not debounce reset from power-up using an RC network and a Schmitt trigger? Set the time constant so that it will hold the mpu in reset until power has been asserted long enough to ensure that the OCXO is producing output. -- Brian Lloyd, WB6RQN/J79BPL 706 Flightline Drive Spring Branch, TX 78070 br...@lloyd.com +1.916.877.5067 _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
