Searching \ for '[EE]:DS1302 RTC Crystal' in subject line. ()
Make payments with PayPal - it's fast, free and secure! Help us get a faster server
FAQ page: www.piclist.com/techref/timers.htm?key=rtc
Search entire site for: 'DS1302 RTC Crystal'.

Exact match. Not showing close matches.
PICList Thread
'[EE]:DS1302 RTC Crystal'
2000\08\07@204323 by Nihat DAGDEMIR

flavicon
face
I have Problem DS1302 crystal ; it is Run faster approximately 5 seconds a
day,
I tryed 5 different brand 32768 Hz. Crystal but didn't solve my problem .
If you know anything about please help me ..

Best regards,

--
http://www.piclist.com hint: The list server can filter out subtopics
(like ads or off topics) for you. See http://www.piclist.com/#topics

2000\08\07@211856 by Don McKenzie

flavicon
face
Nihat DAGDEMIR wrote:
>
> I have Problem DS1302 crystal ; it is Run faster approximately 5 seconds a
> day,
> I tryed 5 different brand 32768 Hz. Crystal but didn't solve my problem .
> If you know anything about please help me ..

The 1302 needs a 6pf load capacitance crystal.
Most stores wouldn't know what this means, and you could end up with
anything.
Get the PDF Data from http://www.dalsemi.com/datasheets/pdfindex.html

But even so, I have found that these dallas RTC's aren't all that
accurate.
perhaps 5 seconds a week maybe.

Don McKenzie    spam_OUTdonTakeThisOuTspamdontronics.com      http://www.dontronics.com

The World's Largest Range of Atmel/AVR  & PICmicro Hardware and Software
Free Basic Compiler and Programmer http://www.dontronics.com/runavr.html
The Little "rAVeR!" AVR & Basic Kit http://www.dontronics.com/dt006.html

--
http://www.piclist.com hint: The list server can filter out subtopics
(like ads or off topics) for you. See http://www.piclist.com/#topics

2000\08\08@154401 by Oliver Broad

flavicon
face
Just a thought but have you tried adding variable capacitance to try to trim
it in.

I don't know what the correct load caps are (if any), but I believe the one
on the input end is sometimes made variable.


{Original Message removed}

More... (looser matching)
- Last day of these posts
- In 2000 , 2001 only
- Today
- New search...