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Forum Index : Microcontroller and PC projects : RTC

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lew247

Guru

Joined: 23/12/2015
Location: United Kingdom
Posts: 1702

Posted: 09:34pm 08 Dec 2016

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When using an RTC such as a DS2321
How many times can you set the time/date?
Is there a maximum number of times?

I know once set it will keep accurate time without being set again for up to a year, I'm just wondering if it would be detrimental to it having the time set once a day from a gps unit
I know it doesn't NEED this - but ....

BobD

Guru

Joined: 07/12/2011
Location: Australia
Posts: 935

Posted: 10:21pm 08 Dec 2016

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Lewis
There are no restrictions on how often you set or get the time from a DS3231.
Bob

lew247

Guru

Joined: 23/12/2015
Location: United Kingdom
Posts: 1702

Posted: 11:03pm 08 Dec 2016

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Thanks Bob

redrok

Senior Member

Joined: 15/09/2014
Location: United States
Posts: 209

Posted: 05:07am 09 Dec 2016

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Hi Lew247;

Yes to what Bob said.

Virtually all the clocks use internal static CMOS memory
to store and update the time and other parameters. Static
memory doesn't have a "wear out" mechanism so you can
read and write to your hearts content.

redrok

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