I have looked at these and thought they were for LCD modules. I will look a= t=20 the data sheet more closely and try a couple samples. Thanks Bob ----- Original Message -----=20 From: To: Sent: Monday, January 30, 2012 9:15 AM Subject: RE: [PIC] Segmented LCD >> I'm working on a simple project, a 3 input temp readout with a 21/2 digi= t=20 >> LCD >> output, for HVAC work.Pretty simple with 3 multiplexed 7 segment LED's.= =20 >> However I >> want to use the LCD so it can be battery powered. The data sheet says th= e=20 >> LCD needs >> AC input. The more I read about this the more confused I become. Do I=20 >> simply reverse >> the polarity to the LCD periodically? Can I use the same multiplexed=20 >> setup as for >> the LED? I can't seem to find a definitive answer to this problem. It=20 >> can't be all >> that complicated. Can it? > > Microchip make several micros for driving LCD segments directly, and=20 > handle all the AC drive requirements. > > Check out the page at=20 > http://www.microchip.com/pagehandler/en-us/technology/lcd/ and click on=20 > the 'products' tab just above the picture. > > I haven't checked, but suspect there will be some application notes as=20 > well, that would explain the principles. > > > --=20 > Scanned by iCritical. > > --=20 > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist=20 --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .