9 Replies Latest reply on Mar 5, 2016 11:37 AM by lasse_1601576

    Finding an appropriate crystal for CY7C68013A (FX2LP)

    omkar.vedpathak

      Hi,

         

       

         

      I am using the CY7C68013A chip on our PCB, and was looking for an appropriate crystal to meet the required specifications as described in you application notes (point 4 on AN15456).

         

      I am unable to find either crystal recommended in your app note or other crystals that meet the required specs of:

         

      ■ Parallel resonant
      ■ Fundamental mode
      ■ Frequency Stability: ±100 ppm
      ■ 500-uW drive level
      ■ 12pF (5% tolerance) load capacitors

         

       

         

      Furthermore, the crystals used on the devboard CY3684 dev kit and the UPEK FISK USB reference design that incorporates the NX2LP chip (CY7C68033-56LFXC) do not meet the above specifications.

         

       

         

      Could you please inform me whether it is necessary to use at least 500-uW drive level crystal, and whether I can use crystals with other load capacitances in my design.

         

       

         

      Many Thanks,

         

      Sach