Javier Puiggros Vogel wrote: > Thanks Olin, but the crystal is not for the MCU is for the RF part. I > was searching to find my crustal specifications and is a parallel > crystal and I think I need a series one. Why do you think that ? The data sheet specificaly says "Parallel Resonant Mode" in table 7-1 on page 33. > How can I conect a paralel > crystal instead a series one in the pin? What is it specificaly on page 33-36 in the data sheet that you don't understand ? There are selection tables for crystals, schematics for the connection and a lot of test explaining it all. Jan-Erik. -- 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