Posted on May 17, 2011 at 11:56I would be interested to know the supplier for your 36 MHz crystal

Posted on May 17, 2011 at 11:56Figure 19 of the UPSD23xx data sheet shows a crystal of between 8MHz and 40MHz attached to XTAL1 and XTAL2. However, be careful, many crystals above about 30MHz are third overtone types. These require a special circuit...