Re: LCD-embedded controller or separate controller

"Ajab" <jasusvijay@xxxxxxxxx> wrote in message
news:1187004726.769666.43330@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
On Aug 13, 3:37 pm, "Tom Lucas"
<news@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
"Ajab" <jasusvi...@xxxxxxxxx> wrote in message

news:1186996713.603899.78910@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

On Aug 13, 2:13 pm, Ajab <jasusvi...@xxxxxxxxx> wrote:
what are the pros and cons for using embedded LCD controller and
separate LCD controller?

embedded inside a microcontroller. forgot to mention.

Seperate controllers take up more board space. However, they mean
you
can use a simpler microcontroller which will cost less than one with
a
built in controller. Whether the saving on the MCU pays for the cost
of
the external controller is a question of production quantities.

A point I suspect more valid to you is that there are relatively few
microcontrollers with built in LCD controllers so you narrow the
number
of devices to choose from. An external controller makes many more
available.

Bearing in mind your previous question about GUIs then I suspect you
are
still in a preliminary stage in specifiying your system. I recommend
a
MCU with a built in controller - I like the Sharp (soon to be NXP)
parts. Get a development kit with an LCD panel and you'll save
yourself
a lot of effort (LogicPD are good). If cost is an issue then think
hard
about whether you can complete this project - it's hard to do LCDs on
the cheap.

Is there specific/standard pinout for LCDs? I was searching for same,
but I can see different LCDs have different pinouts. I have many LCDs
available with the required specification. How do I choose one?

There are many. Don't base your screen choice on the connector alone but
it would be nice if you had a second choice that was compatible with the
first. There are more important things in choosing a screen - cost,
brightness, contrast, cost.


.

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