Err, sorry I used the wrong word earlier... I am(was) using it with a cheramic resonator... It's just packaged as a ultra small smd crystal :-) I'll try the freezer... (Or an ice-cube on the chip :-) Kyrre ----- Original Message ----- From: "Josh Koffman" To: Sent: Friday, November 08, 2002 2:15 AM Subject: Re: [PIC]: How is the stability of the 16F628's internal oscillator ? > I think that's the point. It may work under ideal situations. But there > is no guarantee at any time. I think there has been debates on this in > the past. If you wanted to give yourself a bit more stability than a > crystal, but want to save a bit of money, why not use a ceramic > resonator? If you really want to test it out, put the circuit in a > freezer and see if it still works. Then heat it up with a hair dryer. > I'd be interested to see what happens. > > Josh > -- > A common mistake that people make when trying to design something > completely foolproof is to underestimate the ingenuity of complete > fools. > -Douglas Adams > > Kyrre Aalerud wrote: > > I am writing a system that will use 2 software RS232 connections at 9600. > > (I don't use the internal usart because I already had perfectly adjusted > > code that could handle both ports in the same routine, so I save space...) > > > > I was using a 4.0000 spec'ed crystal with buildt in capacitors while > > developing... > > Now, I wish to save a few bucks and drop the oscillator and use the internal > > one, but I am concerned about the stability. It states one place in the > > docs that it varies from 3.65 to 4.28 but I don't know if that is a horror > > scenario or if it actually could happen. > > -- > http://www.piclist.com hint: To leave the PICList > mailto:piclist-unsubscribe-request@mitvma.mit.edu > > > -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu