At 03:49 PM 9/11/99 +0200, you wrote:
>Are there uPs with clock/calendar as an internal feature ?
>
>Is it advisable to use an external clock/calendar chip anyway ?
>
>Thank you
>
>Duilio Foschi


Seems to me that with the complexity of a standard microchip you ought to
be able to program the clock calender stuff in quite easily.  I know that
somewhere you can find the big honking formula that sets it all out.  I
can't imagine it being more than a couple hundred instructions to
implement.  Then all that is left is to count seconds : 32.768kHz crystal,
a cmos inverter, a 15 bit divider, and some caps and resistors....

Seems like that's all that would be necesary to do it in software.

-Erik Reikes