Possible to replace crystal ?

[geokonst]

Hi, I was wondering if it's possible to replace papillo one crystal with a 50MHz one. Planning to use hot air station. Any reason why this wouldn't work?

[Jack Gassett]

Hello,

Sure, it is no problem to replace the crystal with a 50Mhz one. A hot air rework station will do the trick, but I also do it fairly often with just a soldering iron. If you put plenty of flux on the pads you should be able to heat up one side and then switch to the other side, keep switching back and forth until the part gets warm enough to slide off the pads. Just be careful not to use to much heat as it can damage the pads.

Another option is to keep the 32Mhz crystal on the board and use a DCM (Digital Clock Manager) to change the 32Mhz clock to a 50Mhz clock inside your project. I have recorded a tutorial about how to do this.

http://www.gadgetfactory.net/?main_page=wordpress&p=178

Jack.

[geokonst]

Thanks. I was thinking to replace the crystal because I need an 150MHz clock and don't want to cascade 2 DCMs.