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PICList Thread
'[EE:] D7227G'
2004\02\09@030802 by Jinx

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Does anyone have a datasheet for this LCD IC ? I've managed to
score some jumbo displays (32x4 big characters) dirt cheap but
not having much luck with them. Hoped they'd be the same as an
HD44780 but only 64 pins not 80. Tried usual LCD forums, Google
and NEC database. Nada. Display has 4 x D7227G and an 8x2
connector. Perhaps the D7227G is a driver (like an HD44100) and
needs a controller, but then why would it have that 16-way ribbon
cable like a normal LCD ?

TIA

==============================================
Research is what I'm doing when I don't know what I'm doing
- Wernher von Braun

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2004\02\09@032914 by hael Rigby-Jones

picon face
>-----Original Message-----
>From: Jinx [.....joecolquittKILLspamspam@spam@CLEAR.NET.NZ]
>Sent: 09 February 2004 08:09
>To: PICLISTspamKILLspamMITVMA.MIT.EDU
>Subject: [EE:] D7227G
>
>
>Does anyone have a datasheet for this LCD IC ? I've managed to
>score some jumbo displays (32x4 big characters) dirt cheap but
>not having much luck with them. Hoped they'd be the same as an
>HD44780 but only 64 pins not 80. Tried usual LCD forums,
>Google and NEC database. Nada. Display has 4 x D7227G and an
>8x2 connector. Perhaps the D7227G is a driver (like an
>HD44100) and needs a controller, but then why would it have
>that 16-way ribbon cable like a normal LCD ?
>
>

The full part number is uPD7227G and it is (or was) made by NEC.  However,
the NEC web site denies all knowledge of this part, even though a search on
Google shows many places with it stocked.

Probably not very usefull to you but the nearest I could find is the 7225
LCD Programmable LCD controller.  Possibly the 7227 is a larger version of
this.
http://www.necel.com/nesdis/image/S14308EJ6V1DS00.pdf

Regards

Mike




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2004\02\09@043916 by Jinx

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> nearest I could find is the 7225

Ta. I've downloaded it (eventually - seems any NEC site you
try is put on back-order for delivery in 6-8 weeks)

The 7225 I think is the pixel driver. On closer inspection I see there
are 4 more ICs under, also 64 pin (13x19). I'm guessing they must
be the bigger version of the 7225, can't see the number, and the
7227 is the i/f

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