32kHz clock

Posted on May 17, 2011 at 12:15

What are the recommended CL and maximum ESR for a 32kHz crystal, on the STM32F103RB?

For example, is CL=12.5pF and ESR=35kOhm okay?

Posted on May 17, 2011 at 12:15

Dear espresso_solo,

Generally these values depend on the Quartz manufacturers, you can refer to our Application Note

http://www.st.com/stonline/products/literature/an/13675.pdf

and also to the STM32 Datasheets

http://www.st.com/stonline/products/literature/ds/13587.pdf

or

http://www.st.com/stonline/products/literature/ds/13586.pdf

, Section : Operating conditions then then External clock source characteristics For more details.

With best regards,

STOne-32

[ This message was edited by: STOne-32 on 24-09-2007 00:19 ]