marco genovesi wrote: > > yes AndreJ, > I think that 16F62x is my "future" pic for a cheap datalogger solution. I > have read the specs. and a lot of mail in piclist about this chip: I think > taht is a good choice for an "enty-level" logger. > Obviosly, a 16F87xx will be a better choice for datalogging (A/D), but at > the moment I want a simpler > (and cheaper) unit that take only one, max. two type of measure. > The only doubt I have, using a 32 Khz unit, is a lowered capability in > frequency measure: or I'm wrong? Hi Marco, maybe if you posted more info about the freq you need to measure you may get more help? :o) You said something about using a temp measure chip, and now about freq measurement but what is the main goal? You said you need accurate timed periods for the logging, and low power use? Maybe you could use an even lower speed crystal, ie lower power usage x2 or x4, then use some type of aliasing trick to still give you accurate frequency measurement? -Roman > ----- Original Message ----- > From: "Andy Jancura" > To: > Sent: 8 febbraio, 2002 11.18 > Subject: Re: [EE]: 16F84 Datalogger - current consumption > > > Hello Marco, > > > > I don't known if you must use the 16F84. If no, then change it for 16F627 > > (pin compatible). You have then the possibility to run it in INTRC mode > with > > two possible speeds of 4MHz and 37kHz. When this is not possible, you can > > just connect another 32kHz crystal the chip and make the timming based on > > the timer1 counter. -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.