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Sonsivri > Electronics > General Electronics (Moderators: o2, pickit2) > An old char LCD powered with 3.3v instead of 5v ??
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zuisti
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« on: May 18, 2007, 10:15:16 10:15 »
Hi all,

I have a lot of old Hitachi character LCD panels (eq. LM016 and LM038).
I want to use these in my new uC projects powered with 3.3v.
Does it possible? The data sheets say nothing about the min. power voltage ...

The expected contrast?

Please help me!
Thanks,
 zuisti
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eemkutay
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« Reply #1 on: May 18, 2007, 04:00:46 16:00 »
No, You cant work it with 3,3V because of power supply of that must be in between (+4,75V)-(+5,25V) (with reference to datasheets)
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Parmin
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« Reply #2 on: May 19, 2007, 12:38:22 00:38 »
You may be able to run it if you use one of your uc pin for a charge pump voltage doubler.

Good luck
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darkore
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« Reply #3 on: May 21, 2007, 07:27:00 07:27 »
http://elm-chan.org/docs/lcd/lcd3v.html
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zuisti
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« Reply #4 on: May 21, 2007, 08:14:01 08:14 »
Hello guys!

Thanks a lot for your answers!
@ darkore:
The link you are posted is great, thanks. I'll try it!

zuisti
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