I`ve had my 50mhz sx52 up and running at 100mhz. It works without cooling for a couple of hours at least, that`s the longest I have tried it for. However you wouldn`t want to touch it when your doing that! I should think with heatsinking you could push 120-130 probably much further on the 100mhz rated parts. >From: V sml >Reply-To: pic microcontroller discussion list >To: PICLIST@MITVMA.MIT.EDU >Subject: Re: 50MHz Scenix crystal source? >Date: Sun, 30 Apr 2000 02:20:30 +0800 > > >Mouser has FOX500-20 HC49U 50 Mhz parallel mode xtals, but I >don't specifically know if they work with SX. > >Digikey shows Citizen xtals at 50 in the latest catalog, they >don't appear to be 3rd overtone. > >Anyone tried them up already? Thanks for checking up Dan. > > >I have a Scenix SX28-52 Demo Board, and the xtals there are >labelled: ABRACON 50.000M-F AB 9703. Never heard of Abracon. > >Contacted them (http://www.abracon.com), they were helpful and fast to >reply so far. I guess their's must work ??? Is it alright to pass >email addresses? I did so earlier. Better not to this time. > > >Also, I've been using Epson SG-531PH oscillators (not cheap, >from Digikey) on my own boards. Been running the SX at 60 Mhz >this way. > >It would be good if it can fit into HC49U footprint. Overclock an >already speedy SX, brilliant ! What's limit you've pushed? Put a fan >in and see how fast it can go. I can send a 486 cpu type of fan from >here (Singapore) if you want to try? > >Cheers, Ling ________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com