60+ Views on this posting (so far) and no reply.
So may I assume there are 60+ people interested in a solution?
Has really nobody used the DS1994 yet?
I have a bunch of DS1994 sitting in a drawer and think they are a good replacement for DS1307 or PCF8583 as they have an embedded crystal and Lithium Backup Battery (that lasts 10+ years) and they are 1-wire.
In addition there is 4k of NV-RAM on Chip.
They count seconds from a reference Date and Time.
How to calculate Year, Month, Day, Day of Week and Time from this DoubleWord Counter
using the Integer Brain of a PIC?
(ok, the counter is actually 5 Bytes, but I don't need the Least Significant Byte that counts fractional seconds)
Any Input is appreciated!
regards
Ralph
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