Electronics > Projects, Designs, and Technical Stuff
If you get to choose, which type of RTC chip would you prefer to use?
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Evangelopoulos Panagiotis:
DS3231 is the best for me so far. I've used it in quite a few projects and I've never had a problem with it.
Boscoe:
My dream RTC would just be a large counter for UNIX time. With this it would have many configurable interrupts for integer increments in the counter (every 30s say) and many alarms. A an interrupt status register would be needed of course. Add in time.h and you can easily convert between UNIX time and a time and date. This would suit applications like my down to the ground as I have quite a powerful MCU that can easily fit the time library. I've implemented the above in an FPGA however it has far too high power consumption.
wizard69:
The first thing I noticed about that chip is that leap year counting only goes to 2099.     Now I might not make it to 2099 but I could see a lot of electronics lasting that long.   

--- Quote from: Marcus Bockting on May 11, 2020, 09:04:42 am ---I would use the RV-3028-C7.

It has a UNIX counter and a BCD counter. So you can use it with both architectures.

Advantage of signed numbers is, that you can calculate with early dates like January 1st 1874.
That could be solved in the application of course like already proposed by aix. The handling of times before 1970 is not everywhere needed.

--- End quote ---
cgroen:

--- Quote from: wizard69 on May 19, 2020, 04:54:01 am ---The first thing I noticed about that chip is that leap year counting only goes to 2099.     Now I might not make it to 2099 but I could see a lot of electronics lasting that long.   

--- End quote ---

A lot ?   ???
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