I am just wondering if anyone has interfaced to a Maxim DS1339 RTC?
The reason I am interested in this is it supports 400khz I2C bus, whereas the DS1307 only supports up to 100khz.
I currently thave the DS1307 in my design however my design now uses 400khz as the bus, so I cant talk to the DS1307.
I did a google search and found this site, which lists all the RTC's, however I havent yet found anyones examples.https://github.com/logic/arduino-rtc/wiki/Timekeeping-Registers
I assume it may be a case of writing a library for it myself.... somehow...
Open to other RTC options too, just need one that talks I2C @ 400khz, and ideally is already supported by Arduino.