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[Lcdproc] HD44780 - Wiring


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  • From: steffen.koch AT sphinx-electronics.de (Koch, Steffen)
  • Subject: [Lcdproc] HD44780 - Wiring
  • Date: Mon Sep 16 06:58:01 2002

It draws power from the USB. Approx 100 mA for the FTDI eval board and 200
mA for the display LEDs and 20mA for the display itself.

cheers,
Steffen

> -----Original Message-----
> From: S Mohan
> [mailto:smohan AT vsnl.com]
> Sent: Monday, September 16, 2002 8:54 AM
> To: Koch, Steffen;
> lcdproc AT lists.omnipotent.net
> Subject: RE: [Lcdproc] HD44780 - Wiring
>
>
> Does it draw power from USB or should it be wired for power
> separately?
>
> Mohan
>
> -----Original Message-----
> From:
> lcdproc-admin AT lists.omnipotent.net
> [mailto:lcdproc-admin AT lists.omnipotent.net]On
> Behalf Of Koch, Steffen
> Sent: 16 September 2002 11:56
> To:
> lcdproc AT lists.omnipotent.net
> Subject: RE: [Lcdproc] HD44780 - Wiring
>
>
> > > AFAIR the HD44780 has a 4/8 bit parallel interface. So no
> > > chance to get it running on RS232...
> > That's right.
> > However there are some convertors available. IIRC they exists
> > for USB, I2C, and RS232 (o.o. the PIC-an-LCD). This last one is
> > officially supported by LCDproc.
> I have a chip from FTDI called 'FT245BM' it's placed on an
> evaluation board
> for USB <--> parallel prototyping. It works fine with 4 bit
> adressing on my
> hd44780.
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> LCDproc AT lists.omnipotent.net
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>




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