Hi Didier, True this could be done in SW, and I should have mentioned that I considered that in my post. However, these chips offer several other functions that would add complexity to the code, and I've been looking for a reason to do a simple HW project and open source it through OSH Park anyway. I'm not looking to do this for just myself.
Looking across the TI and Microchip lines a bit, it strikes me as odd that more micros supporting integrated RTCs actually use two I/Os for a 32 kHz crystal option. Why they support an RTC is not mysterious at all, but why not the option at to drive the 1 Hz clock directly rather than dividing 32 kHz down to 1 Hz and using an extra I/O is odd when these I/Os are usually configurable anyway. Russ You want to drive the RTC with an external PPS to get time/date into an > Arduino? > Why not feed the PPS to the Arduino and have it compute date and time? > > It is really not that hard to count seconds. You don't really need an > external chip to do that. > > Didier KO4BB > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
