Hi - I want to find an RTC for a project I'm working on. The problem I'm running into is is that most depend on the accuracy of the external crystal - and I can't find crystals with better than about 20ppm accuracy. The only solution I've found to this is the Maxim DS3232, which has a built in crystal with 2ppm accuracy. But the 3232 doesn't do hundreths of a second - only full seconds. I'd really like something that can do hundreths. Also the 3232 is a SO-20 only, which is kinda chunky. Anybody have any reccomendations for a good solution to this problem? Also - what's a good battery to use (something very standard and easy to find). Thanks in advance.
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Joined: Wed. Feb 19, 2003
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Location: Redwood City, CA
Last Edited: Wed. Nov 23, 2005 - 01:52 PM