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'display'
1996\03\27@212941 by hoss karoly

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thanx a lot Anton
the doc U sent was exactly the one i searched for
After I have finished the painting of one of my friend's helmet
I'll check it out
I'm looking forward to hear from you
thanks again
charley
e-mail : spam_OUTtimothyTakeThisOuTspambekes.hungary.net


'Display'
1996\10\02@223118 by 87654321
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I wanted to get a cheap 20*2 or 20*4 character display....with the hitachi
44780 chip in it....whats a cheap place to get this....good quality too...i
don't want the thing dieing on me after a while...

1996\10\03@221928 by Tony Matthews

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87654321 wrote:
>
> I wanted to get a cheap 20*2 or 20*4 character display....with the hitachi
> 44780 chip in it....whats a cheap place to get this....good quality too...i
> don't want the thing dieing on me after a while...
why the 44780 ? excuse the question but I to have a project needing 20x2
alphanumeric and am as yet totaly unbiased (ignorant) and am just
curious. Tony M

1996\10\03@231830 by Kalle Pihlajasaari

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Hi Tony,

> > I wanted to get a cheap 20*2 or 20*4 character display....with the hitachi
> > 44780 chip in it....whats a cheap place to get this....good quality too...i
> > don't want the thing dieing on me after a while...
> why the 44780 ? excuse the question but I to have a project needing 20x2
> alphanumeric and am as yet totaly unbiased (ignorant) and am just

Industry standard.  Actually hard to get anything else in
Alpha-numeric displays by accident.

Use 8 bit or 4 bit to drive and all the code samples on the
list and web sites will work (with minor tweaks).

Cheers
--
Kalle Pihlajasaari     .....kalleKILLspamspam@spam@data.co.za
Interface Products     Box 15775, Doornfontein, 2028, South Africa
+27 (11) 402-7750      Fax: +27 (11) 402-7751

1996\10\03@232902 by Robert Lunn
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>> I wanted to get a cheap 20*2 or 20*4 character display....with the hitachi
>> 44780 chip in it....whats a cheap place to get this....good quality too...i
>> don't want the thing dieing on me after a while...
>
> why the 44780 ? excuse the question but I to have a project needing
> 20x2 alphanumeric and am as yet totaly unbiased (ignorant) and am just
> curious. Tony M

       It's about as close to an industry standard as you can get.

       Build h/w for the '44780 i/f and write s/w for the '44780
       command set, and you can plug in almost any small LCD module
       and expect it to work.

___Bob

1996\10\04@095519 by myke predko

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>> why the 44780 ? excuse the question but I to have a project needing 20x2
>> alphanumeric and am as yet totaly unbiased (ignorant) and am just
>
>Industry standard.  Actually hard to get anything else in
>Alpha-numeric displays by accident.
>
>Use 8 bit or 4 bit to drive and all the code samples on the
>list and web sites will work (with minor tweaks).
>

Just to reiterate what I said before, get every source you can for LCD
displays because there's a lot of confusion and inaccuracies.

I have two Hitachi 44780 datasheets at home with different/wrong
information.  I have found inconsistancies and errors in three "FAQs" out on
the Web.  I now have four code examples (including the MPC "C" Routines)
which have inconsistancies as well.  I currently have the Optrex databook on
order from Digi-Key.

I *think* I have a complete database on what these things do and how to
program them in different modes.

But, it took several hours at the kitchen table going through all these
sources trying to understand what was really going on.  The Hitachi
datasheets I felt were really inexcusable.

They are, however, pretty robust designs and while the four examples I have
are for four different devices (PIC, 6800, COP-8, and 8051) and are
radically different (one doesn't even reset the device, just allows the
natural power up into 8 bit mode), they do demonstrate how robust the 44780
is in terms of interfacing (although I haven't tested each program out).

Myke


Do you ever feel like an XT Clone caught in the Pentium Pro Zone?

1996\10\04@214409 by 87654321

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>87654321 wrote:
>>
>> I wanted to get a cheap 20*2 or 20*4 character display....with the hitachi
>> 44780 chip in it....whats a cheap place to get this....good quality too...i
>> don't want the thing dieing on me after a while...
>why the 44780 ? excuse the question but I to have a project needing 20x2
>alphanumeric and am as yet totaly unbiased (ignorant) and am just
>curious. Tony M
>
>
I saw this display heavily used in projects......
its easy to find info on it and people have already made programs for
it...so it would be easier for me

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