3 Volts LCD?
2005-08-16 by JChavez@soboce.com
Hi all, Does anyone know if there is 3 Volts 2x16 LCDs? I mean HD44780 style. If so where I can buy them? TIA, Javier
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3 Volts LCD?
Re: [AVR-Chat] 3 Volts LCD?
2005-08-16 by Leon Heller
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From: <JChavez@soboce.com> To: <AVR-Chat@yahoogroups.com> Sent: Tuesday, August 16, 2005 1:41 AM Subject: [AVR-Chat] 3 Volts LCD? > > > > > Hi all, > > Does anyone know if there is 3 Volts 2x16 LCDs? I mean HD44780 style. > If so where I can buy them? The Powertip LCDs I use will go down to 2.7V: http://www.powertip.com.tw/product/PC%20SERIES/PC%201602D.PDF Leon -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.338 / Virus Database: 267.10.8/71 - Release Date: 12/08/2005 --- [This E-mail has been scanned for viruses but it is your responsibility to maintain up to date anti virus software on the device that you are currently using to read this email. ]
Re: 3 Volts LCD?
2005-08-16 by Hans Kallen
Hi Javier, You may want to look at the Display-On-Glass modules from Electronic Assembly, they can be interfaced in 4-bit or 8-bit parallel mode, or in SPI mode which saves CPU pins. There are LED backlights in various colors available that also operate from a 3.3V supply. Here's the datasheet: http://www.lcd-module.com/deu/pdf/doma/dog-m.pdf Best regards, Hans
Re: [AVR-Chat] 3 Volts LCD?
2005-09-04 by James Hatley
Hello Leon, I too am looking for a true 3.3v capable LCD. I've examined the PowerTip display and true it's logic will run down to 2.7 volts. However, the LCD operating voltage still requires a volt lower voltage floor (4.1v voltage total) to achieve appropriate contrast control. (for the 1602D you use) How are you actually running your LCD units at 3 volts to overcome this? do you use a small negative supply of some sort to provide this voltage? Thanks, Jim Hatley ----- Original Message -----
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From: "Leon Heller" <leon.heller@bulldoghome.com> To: <AVR-Chat@yahoogroups.com> Sent: Monday, August 15, 2005 9:14 PM Subject: Re: [AVR-Chat] 3 Volts LCD? > ----- Original Message ----- > From: <JChavez@soboce.com> > To: <AVR-Chat@yahoogroups.com> > Sent: Tuesday, August 16, 2005 1:41 AM > Subject: [AVR-Chat] 3 Volts LCD? > > > > > > > > > > > > Hi all, > > > > Does anyone know if there is 3 Volts 2x16 LCDs? I mean HD44780 style. > > If so where I can buy them? > > The Powertip LCDs I use will go down to 2.7V: > > http://www.powertip.com.tw/product/PC%20SERIES/PC%201602D.PDF > > Leon > > > -- > No virus found in this outgoing message. > Checked by AVG Anti-Virus. > Version: 7.0.338 / Virus Database: 267.10.8/71 - Release Date: 12/08/2005 > > --- > [This E-mail has been scanned for viruses but it is your responsibility > to maintain up to date anti virus software on the device that you are > currently using to read this email. ] > > > > > > Yahoo! Groups Links > > > > > > >
Re: [AVR-Chat] 3 Volts LCD?
2005-09-04 by Leon Heller
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From: "James Hatley" <james.hatley@comcast.net> To: <AVR-Chat@yahoogroups.com> Sent: Sunday, September 04, 2005 7:56 PM Subject: Re: [AVR-Chat] 3 Volts LCD? > Hello Leon, > > I too am looking for a true 3.3v capable LCD. I've examined the PowerTip > display and true it's logic will run down to 2.7 volts. However, the LCD > operating voltage still requires a volt lower voltage floor (4.1v voltage > total) to achieve appropriate contrast control. (for the 1602D you use) > > How are you actually running your LCD units at 3 volts to overcome this? > do > you use a small negative supply of some sort to provide this voltage? I'm not actually running them at 3V. If I was, I'd probably use a simple charge pump driven by a toggled output to generate the negative voltage. Leon -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.344 / Virus Database: 267.10.18/89 - Release Date: 02/09/2005 --- [This E-mail has been scanned for viruses but it is your responsibility to maintain up to date anti virus software on the device that you are currently using to read this email. ]
Re: [AVR-Chat] 3 Volts LCD?
2005-09-04 by James Hatley
Thank you Leon, Sorry, I thought that you were actually running it at 3 volts. Yes, I can think of several ways to generate the negative voltage too... I will have to think on it... Thanks again, Jim ----- Original Message ----- From: "Leon Heller" <leon.heller@bulldoghome.com> To: <AVR-Chat@yahoogroups.com> Sent: Sunday, September 04, 2005 12:11 PM Subject: Re: [AVR-Chat] 3 Volts LCD? > ----- Original Message ----- > From: "James Hatley" <james.hatley@comcast.net> > To: <AVR-Chat@yahoogroups.com> > Sent: Sunday, September 04, 2005 7:56 PM > Subject: Re: [AVR-Chat] 3 Volts LCD? > > > > Hello Leon, > > > > I too am looking for a true 3.3v capable LCD. I've examined the PowerTip > > display and true it's logic will run down to 2.7 volts. However, the LCD > > operating voltage still requires a volt lower voltage floor (4.1v voltage
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> > total) to achieve appropriate contrast control. (for the 1602D you use) > > > > How are you actually running your LCD units at 3 volts to overcome this? > > do > > you use a small negative supply of some sort to provide this voltage? > > I'm not actually running them at 3V. If I was, I'd probably use a simple > charge pump driven by a toggled output to generate the negative voltage. > > Leon > > > > -- > No virus found in this outgoing message. > Checked by AVG Anti-Virus. > Version: 7.0.344 / Virus Database: 267.10.18/89 - Release Date: 02/09/2005 > > --- > [This E-mail has been scanned for viruses but it is your responsibility > to maintain up to date anti virus software on the device that you are > currently using to read this email. ] > > > > > > Yahoo! Groups Links > > > > > > >