Hi All,

Sorry if these questions irrate any one out there.

Just about to begin some works on Monochrome LCDs. I had some
experience dealing with those characters LCD driven by HD controllers.

Any info on how these LCDs work? Went through the web and most are ads
and sites selling these LCDs. Went through a couple of datasheets but
still not much details. I suppose similarly to those char LCD, there
should be a driver but cant find any info about it.

Another question is the inverter. What is it for?

ywz

On Apr 23, 4:55*am, "ydoubl...@gmail.com" <ydoubl...@gmail.com> wrote:

What kind of monochrome LCDs? There are some simple LCDs with the
controller integrated on the glass. These are usually controlled over
an SPI or I2C interface. Cellphone LCDs are often this type. It's not
much more difficult than driving a character LCD, except that you have
to render the text yourself (and have your own font in ROM).

Bigger LCDs need to be supplied with data constantly from an external
controller chip. You would often select a micro with on-chip LCD
controller for such applications (a PDA type micro).

Providing high voltage to the backlight, EL or CCFL. If you are asking
about inverters I guess you are not asking about simple LCDs, since
they are usually LED backlit.

On Apr 23, 1:55 am, "ydoubl...@gmail.com" <ydoubl...@gmail.com> wrote:
There are two types of chips on LCD: standard chips or programmable
chips.
With standard chips, you can manage data with serial SPI interface.
With programmable chip on glass (PCOG), you can have standalone masked
programmed ROM or OTP (One Time programmable) ROM microcontroller on
the LCD glass.

There are some information available at http://san-tech-lcd.info

On Apr 23, 9:55�am, "ydoubl...@gmail.com" <ydoubl...@gmail.com> wrote:
I take it you mean graphic lcds. You need a controller, some panels
have one built in, many do not. Most use the Epson SED series. Look on
their website for a datasheet.

ydoubleuz@gmail.com wrote:

Try here to start:
http://www.myke.com/lcd.htm
Way back when I bought his book comparing microcontrollers.
He had the info in there about the HD44780-based LCD's that is on
the site at the link.

HTH and TTFN,
Tarkin

ydoubleuz@gmail.com wrote:

Sorry for my ignorance on my first reply, you already know about char-lcds.
Try hobbyist/embedded websites, like Dontronics and such. Try and use the
advanced searches of your favorite engine to filter your results.

Also, look into articles/sites pertaining to hacking the Mailstation. These
el-cheapo units were quite popular for having a keyboard and mono lcd-
ISTR having glanced at site or two which referenced the difficulties
of programming graphical lcds.

HTH and TTFN,
Tarkin

Hi again,

After checking with suppliers and budget constraints. I purchased a
HITACHI SP10Q003-T. However searching thru' the respective sites; all
I found is a datasheet of that LCD with its electrical and timing
specifications. No mention on connections and drivers or controllers,
etc. Any infos from the gurus out there??

Tks

On May 15, 6:23�am, "ydoubl...@gmail.com" <ydoubl...@gmail.com> wrote:
Datasheet is here http://www.hitachi-displays-eu.com/doc/sp10q003-t.pdf

This LCD has no controller, drivers are built in, I used a M66272FP
controller on a similar lcd panel some years ago. You could also use
an Epson SED series controller or even a Yamaha. Hitachi used to sell
a delevopment kit for these.

On May 15, 8:42Â*pm, cbarn24...@aol.com wrote:
Yup I checked...but now the dev kit is no longer sold. The datasheet u
posted is the only one that I found previously. Would like to check hw
the SED controller interface with the LCD. Any particular Epson SED
recommended??