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RTC problem!

kami03372
Associate
Posted on August 29, 2009 at 23:47

RTC problem!

2 REPLIES 2
16-32micros
Associate III
Posted on May 17, 2011 at 13:21

Hi kami03372,

To better understand how the Oscillator is working, I suggest you this AN link

http://www.st.com/stonline/products/literature/an/15287.pdf

You may find all answers to your questions.

Cheers,

STOne-32.

[ This message was edited by: STOne-32 on 30-08-2009 03:18 ]

kami03372
Associate
Posted on May 17, 2011 at 13:21

Hi!

We are using

Crystals: KDS CL=5pF ESR=40K MAX

CL1=CL2=6pF

It can work all the time!

But if touch one pin(connect to OCS32-IN) of the Crystals,the RTC will stop!The other pin is OK!

The same to oscilloscope's probe,a little piece of paper......

Why?

Could you tell me?

Thanks!