From PICLIST@MITVMA.MIT.EDU Fri Nov 15 07:50:01 2002 Received: from cherry.ease.lsoft.com [209.119.0.109] by dpmail10.doteasy.com with ESMTP (SMTPD32-7.13) id A7A9152D0078; Fri, 15 Nov 2002 07:50:01 -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 <1.007DCB85@cherry.ease.lsoft.com>; Fri, 15 Nov 2002 10:35:56 -0500 Received: from MITVMA.MIT.EDU by MITVMA.MIT.EDU (LISTSERV-TCP/IP release 1.8d) with spool id 3999 for PICLIST@MITVMA.MIT.EDU; Fri, 15 Nov 2002 10:35:48 -0500 Received: from MITVMA (NJE origin SMTP@MITVMA) by MITVMA.MIT.EDU (LMail V1.2d/1.8d) with BSMTP id 2120; Fri, 15 Nov 2002 10:35:02 -0500 Received: from smtp13.singnet.com.sg [165.21.6.33] by mitvma.mit.edu (IBM VM SMTP Level 320) via TCP with ESMTP ; Fri, 15 Nov 2002 10:34:55 EST X-Comment: mitvma.mit.edu: Mail was sent by smtp13.singnet.com.sg Received: from homepc (bb-203-125-10-82.singnet.com.sg [203.125.10.82]) by smtp13.singnet.com.sg (8.12.6/8.12.6) with SMTP id gAFFYsMG019742 for ; Fri, 15 Nov 2002 23:34:54 +0800 References: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2600.0000 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 Message-ID: <000f01c28cbd$0de7d540$520a7dcb@homepc> Date: Fri, 15 Nov 2002 23:38:32 +0800 Reply-To: pic microcontroller discussion list Sender: pic microcontroller discussion list From: Soon Lee Subject: Re: [EE]: 3.3Volt for MAX 232 To: PICLIST@MITVMA.MIT.EDU X-RCPT-TO: Status: R X-UIDL: 277600685 X-Evolution-Source: pop://mailinglist%40farcite.net@mail.farcite.net/ X-Evolution: 0000077f-0000 I was think when the voltage is at 5volts the voltage double on board the Max 232 will create a +10V and -10V when i use 3.3 V the value is at +-6.6volt. I think as long as the PC accept the value of the output then the data can be read. any way the RS232 protocol will not only work at +-10V but at a range -5 to -15 Volts 5 -to 15 Volts therefore as long as the volt produce is between the acceptable range i think is safe. ----- Original Message ----- From: "Paul Hutchinson" To: Sent: Friday, November 15, 2002 10:12 PM Subject: Re: [EE]: 3.3Volt for MAX 232 > If you read the data sheet for MAX232 available at http://www.maxim-ic.com/ > it very clearly states that the MAX232 is 5 volt only. > > Paul > > > -----Original Message----- > > [mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Soon Lee > > Sent: Friday, November 15, 2002 1:07 AM > > Subject: Re: [EE]: 3.3Volt for MAX 232 > > > > > > I have try with 3.3 volt as the power supply it seem ok what i am not sure > > whether thats the correct way > > -- > http://www.piclist.com hint: The PICList is archived three different > ways. See http://www.piclist.com/#archives for details. > > -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.