[TriEmbed] data point about the Maxim temp compensated clock chips

[Pete Soper]

I have a gadget that uses the Maxim DS3231SN# 
<http://datasheets.maximintegrated.com/en/ds/DS3231-DS3231S.pdf> RTC 
chip and it's been on battery backup for five months in a room where the 
temperature has varied by 10-20 degrees F throughout the fall and 
winter. I just started it up and the clock has drifted about one second 
in that time. I say "about" because one second is at the limit of what I 
can detect by comparing it to another clock set as close to current UTC 
as possible. So it might be off by 1.99 seconds. In any case this is 
adequate for me. :-)

This chip is only available in an SOIC-16 package, but it's not hard to 
solder and Adafruit sells breakout boards 
<http://www.adafruit.com/products/1207> that allow using it with a 
breadboard.

-Pete

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