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LCD controller interface to LPC2138?

Started by matterama3444 August 14, 2007
Hi all,

I'm looking to use an LPC2138 with an LCD controller to provide
graphical output for my project. I'm looking for something on the
order of a 5 inch TMR / TFT LCD display. Can anyone point me to a site
or combination of controller/LCD's/ARM's that you've used in the past
that might make sense?

I want to make some graphs, output data, standard stuff. I need about
5 inches to make it visible to the user though, so things like this:

http://www.sparkfun.com/commerce/product_info.php?products_idV9


are a little too small.

Thanks in advance...

An Engineer's Guide to the LPC2100 Series

Hi,
This LCD has a size about 1.7" and doesn't need an external graphic controller (because it use a SPI connection). There is a demo board from embeddedartist some month ago who use this display but it's actually not available : http://www.embeddedartists.com/products/boards/lpc2104_pro002.php

>From sparkfun for example you find an excellent display (the same than Sony use in their PSP) with 4.3" : http://www.sparkfun.com/commerce/product_info.php?products_id35

We use this display on a product and it's very nice, beautifull colors, large viewing angles, very fine pixels.
The problem of this type of display is the resolution 480x272 so you need a controller with at least 130 kbytes of ram for 256 colours. With these display you can use an Epson controller like S1D13706 (80k of ram) but with more ram or solomon systech SSD1306 if I well remember. But these controllers use a 16 bits parrallel bus, so LPC2138 is not the bests choice because it will need all GPIO to drive the controller and the speed to toggle GPIO's is not enough if you need a lot of refreshment of the display.
So for these size of display you will need a LPC with external bus or like us the Ex-Sharp ARM7 now NXP, LH75401 : http://www.standardics.nxp.com/products/lh7/all/
This microcontroller need an external flash and ram but has a internal graphic controller and is very nice with the 4.3" sharp display. Microcontroller + RAM + Flash is cheaper than a microntroller + graphic controller.
You can also wait the announced MXP LPC2478 with embedded graphic controllers and 512k flash...
If you've got very small volume you will probably find some LCD's with embedded controller who need just a SPI connection but the cost is generally largely higher.
If you need more info about this display and connection you can contact me.

Sebastien
----- Original Message -----
From: matterama3444
To: l...
Sent: Tuesday, August 14, 2007 7:45 AM
Subject: [lpc2000] LCD controller interface to LPC2138?

Hi all,

I'm looking to use an LPC2138 with an LCD controller to provide
graphical output for my project. I'm looking for something on the
order of a 5 inch TMR / TFT LCD display. Can anyone point me to a site
or combination of controller/LCD's/ARM's that you've used in the past
that might make sense?

I want to make some graphs, output data, standard stuff. I need about
5 inches to make it visible to the user though, so things like this:

http://www.sparkfun.com/commerce/product_info.php?products_idV9


are a little too small.

Thanks in advance...
Microtips makes an pretty good set of small TFT LCDs with build in
controllers. They have 2.8" on up in size with and without a touch
screen. Mouser even has most of them in stock. They only negative is
they are transmissive type LCDs (like most cell phones), so the back light
has to be on to see them.

http://www.microtipsusa.com/
Optrex makes the transreflective type, but you'll need an LCD controller
for those. But they look good in direct sun.

http://www.optrex.com/
On Tue, 14 Aug 2007, matterama3444 wrote:

>
> Hi all,
>
> I'm looking to use an LPC2138 with an LCD controller to provide
> graphical output for my project. I'm looking for something on the
> order of a 5 inch TMR / TFT LCD display. Can anyone point me to a site
> or combination of controller/LCD's/ARM's that you've used in the past
> that might make sense?
>
> I want to make some graphs, output data, standard stuff. I need about
> 5 inches to make it visible to the user though, so things like this:
>
> http://www.sparkfun.com/commerce/product_info.php?products_idV9
> are a little too small.
>
> Thanks in advance...
>
>
>
> Yahoo! Groups Links
Thanks Sebastien. I'm going to take a look at your links and get
back in touch with you. I'd like to stay with the lone
microcontroller approach if at all possible...I'll be in touch...
Thanks,
Matt

--- In l..., "Sebastien Jacquemard"
wrote:
>
> Hi,
> This LCD has a size about 1.7" and doesn't need an external
graphic controller (because it use a SPI connection). There is a demo
board from embeddedartist some month ago who use this display but
it's actually not available :
http://www.embeddedartists.com/products/boards/lpc2104_pro002.php
>
> From sparkfun for example you find an excellent display (the same
than Sony use in their PSP) with 4.3" :
http://www.sparkfun.com/commerce/product_info.php?products_id35
> We use this display on a product and it's very nice, beautifull
colors, large viewing angles, very fine pixels.
> The problem of this type of display is the resolution 480x272 so
you need a controller with at least 130 kbytes of ram for 256
colours. With these display you can use an Epson controller like
S1D13706 (80k of ram) but with more ram or solomon systech SSD1306
if I well remember. But these controllers use a 16 bits parrallel
bus, so LPC2138 is not the bests choice because it will need all GPIO
to drive the controller and the speed to toggle GPIO's is not enough
if you need a lot of refreshment of the display.
> So for these size of display you will need a LPC with external bus
or like us the Ex-Sharp ARM7 now NXP, LH75401 :
http://www.standardics.nxp.com/products/lh7/all/
> This microcontroller need an external flash and ram but has a
internal graphic controller and is very nice with the 4.3" sharp
display. Microcontroller + RAM + Flash is cheaper than a
microntroller + graphic controller.
> You can also wait the announced MXP LPC2478 with embedded graphic
controllers and 512k flash...
> If you've got very small volume you will probably find some LCD's
with embedded controller who need just a SPI connection but the cost
is generally largely higher.
> If you need more info about this display and connection you can
contact me.
>
> Sebastien
> ----- Original Message -----
> From: matterama3444
> To: l...
> Sent: Tuesday, August 14, 2007 7:45 AM
> Subject: [lpc2000] LCD controller interface to LPC2138?
>
> Hi all,
>
> I'm looking to use an LPC2138 with an LCD controller to provide
> graphical output for my project. I'm looking for something on the
> order of a 5 inch TMR / TFT LCD display. Can anyone point me to a
site
> or combination of controller/LCD's/ARM's that you've used in the
past
> that might make sense?
>
> I want to make some graphs, output data, standard stuff. I need
about
> 5 inches to make it visible to the user though, so things like
this:
>
> http://www.sparkfun.com/commerce/product_info.php?products_idV9
>
products_idV9> are a little too small.
>
> Thanks in advance...
>
>
>
>
>
>
>
--- In l..., "Sebastien Jacquemard"
wrote:
>
> Hi,
> This LCD has a size about 1.7" and doesn't need an external graphic
>controller (because it use a SPI connection). There is a demo board
>from embeddedartist some month ago who use this display but it's
>actually not available :
>http://www.embeddedartists.com/products/boards/lpc2104_pro002.php
>
> From sparkfun for example you find an excellent display (the same
>than Sony use in their PSP) with 4.3" :
>http://www.sparkfun.com/commerce/product_info.php?products_id35
>
> We use this display on a product and it's very nice, beautifull
>colors, large viewing angles, very fine pixels.
> The problem of this type of display is the resolution 480x272 so
>you need a controller with at least 130 kbytes of ram for 256
>colours. With these display you can use an Epson controller like
>S1D13706 (80k of ram) but with more ram or solomon systech SSD1306
>if I well remember. But these controllers use a 16 bits parrallel >bus,

The ssd1906 can be used with a multiplexed 8 bit bus, and has 256k
sram. We use one attached to a Zilog EZ80 running at 50MHz. So if an 8
bitter can cope, the 16/32 Arm LPC2138 should be ok.

> so LPC2138 is not the bests choice because it will need all GPIO to
>drive the controller and the speed to toggle GPIO's is not enough if
>you need a lot of refreshment of the display.
> So for these size of display you will need a LPC with external bus
>or like us the Ex-Sharp ARM7 now NXP, LH75401 :
>http://www.standardics.nxp.com/products/lh7/all/
> This microcontroller need an external flash and ram but has a
>internal graphic controller and is very nice with the 4.3" sharp
>display. Microcontroller + RAM + Flash is cheaper than a >microntroller
>+ graphic controller.
> You can also wait the announced MXP LPC2478 with embedded graphic
>controllers and 512k flash...
> If you've got very small volume you will probably find some LCD's
>with embedded controller who need just a SPI connection but the cost
>is generally largely higher.
> If you need more info about this display and connection you can
>contact me.
>
> Sebastien
> ----- Original Message -----
> From: matterama3444
> To: l...
> Sent: Tuesday, August 14, 2007 7:45 AM
> Subject: [lpc2000] LCD controller interface to LPC2138?
>
> Hi all,
>
> I'm looking to use an LPC2138 with an LCD controller to provide
> graphical output for my project. I'm looking for something on the
> order of a 5 inch TMR / TFT LCD display. Can anyone point me to a
>site
> or combination of controller/LCD's/ARM's that you've used in the >past
> that might make sense?
>
> I want to make some graphs, output data, standard stuff. I need >about
> 5 inches to make it visible to the user though, so things like >this:
>
> http://www.sparkfun.com/commerce/product_info.php?products_idV9
> are a little too small.
>
> Thanks in advance...
>
>
>
>
>
>
>

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