---- START NEW MESSAGE --- Received: from cherry.ease.lsoft.com [209.119.0.109] by dpmail10.doteasy.com with ESMTP (SMTPD32-8.05) id A46B39D0226; Wed, 28 Jan 2004 00:35:55 -0800 Received: from PEAR.EASE.LSOFT.COM (209.119.0.19) by cherry.ease.lsoft.com (LSMTP for Digital Unix v1.1b) with SMTP id <23.00CC093B@cherry.ease.lsoft.com>; Wed, 28 Jan 2004 3:30:43 -0500 Received: from MITVMA.MIT.EDU by MITVMA.MIT.EDU (LISTSERV-TCP/IP release 1.8e) with spool id 3751 for PICLIST@MITVMA.MIT.EDU; Wed, 28 Jan 2004 03:30:38 -0500 Received: from MITVMA (NJE origin SMTP@MITVMA) by MITVMA.MIT.EDU (LMail V1.2d/1.8d) with BSMTP id 2708; Wed, 28 Jan 2004 03:30:07 -0500 Received: from outbound3.mail.tds.net [216.170.230.93] by mitvma.mit.edu (IBM VM SMTP Level 430) via TCP with ESMTP ; Wed, 28 Jan 2004 03:30:06 EST X-Comment: mitvma.mit.edu: Mail was sent by outbound3.mail.tds.net Received: from whythis (host-69-21-64-145.69-21.unk.tds.net [69.21.64.145]) by outbound3.mail.tds.net (8.12.10/8.12.3) with SMTP id i0S8U8PJ016097 for ; Wed, 28 Jan 2004 02:30:08 -0600 (CST) References: X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1158 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1165 Message-ID: <000b01c3e578$f1501760$91401545@whythis> Date: Wed, 28 Jan 2004 03:30:09 -0500 Reply-To: pic microcontroller discussion list Sender: pic microcontroller discussion list From: Denny Esterline Subject: Re: [PIC:] Vref+, VDD and PWM on PIC16f818 To: PICLIST@MITVMA.MIT.EDU Precedence: list X-RCPT-TO: Status: U X-UIDL: 371856053 I've no experience with the 818 specifically, but these specs should be common across the product line. The PWM is a digital output. There is no guarantee as to the voltage levels except that it's compatible with digital IO. It's level will swing between (close to) Vss and (close to) Vdd. There is no guarantee of any specific analog voltage. And yes, the PWM module will operate without additional attention - as Ron Popiel is so fond of saying- "set it, and forget it". -Denny > Hello everyone, > Thanks for reading. I am starting with PWM and have 2 questions > about this project: > 1 analog input with 4.096 Volt ref+ > 1 PWM > 3 digital pins for digital byte output of the analog value > > First question, if i use PWM with FFFF output will it give me 4.096 volts, > 5 volts or will it be unknown > Second question after I started PWM does it keep on going by it's own or > do i have to keep on givig it an input to "keep it alive" > > Thanks in advance and thanks also for all the precius information that > I found in the list in the past 3 years. > > Techy srl > Stefano Vanzo > 38080 CARISOLO TN > ITALY > > -- > http://www.piclist.com hint: The list server can filter out subtopics > (like ads or off topics) for you. See http://www.piclist.com/#topics -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics .