Dear all,
 
Would you know of a Dot Matrix LCD driver 32x64) that require a low power
consumption when the LCD is on.  Even though the MSP430 is a low power
consumption part but when you interface with an external LCD drivert the power
consumption goes up.
 
Thanks,
John.
 

__________________________________________________
 

You could drive the LCD directly from the MSP430 for most small types. 
Find one like a Tianma (very cheap LCDs from China, but reliable) that 
have only row and column drivers on board, much lower current 
consumption than those with integrated driver chip.

Al

john Mcdonald wrote:

>  
> Dear all,
>  
> Would you know of a Dot Matrix LCD driver 32x64) that require a low power
consumption when the LCD is on.  Even though the MSP430 is a low power
consumption part but when you interface with an external LCD drivert the power
consumption goes up.
>  
> Thanks,
> John.
>  
> 
> __________________________________________________
>  
> 
> 
> 
> 
> 
> 
> .
> 
>  
> Yahoo! Groups Links
> 
> 
> 
>  
> 
> 
> 
> 

 
Hi Al,
 
Would you elaborate on this a bit more please.  Whar are differences between row
and column drivers verses those with integrated driver chip.
 
High regards,
John.


onestone <onestone@ones...> wrote:
You could drive the LCD directly from the MSP430 for most small types. 
Find one like a Tianma (very cheap LCDs from China, but reliable) that 
have only row and column drivers on board, much lower current 
consumption than those with integrated driver chip.

Al

john Mcdonald wrote:

>  
> Dear all,
>  
> Would you know of a Dot Matrix LCD driver 32x64) that require a low power
consumption when the LCD is on.  Even though the MSP430 is a low power
consumption part but when you interface with an external LCD drivert the power
consumption goes up.
>  
> Thanks,
> John.
>  
> 
> __________________________________________________
>  
> 
> 
> 
> 
> 
> 
> .
> 
>  
> . 


		
---------------------------------
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The row column driver devices are completely controlled by an external 
device. This is what controllers like the old SED1330 do, they provide 
the frame and character timing signals, as well as data and fixed 
character sets. They also contain RAM, and ROM, in most cases. The ROM 
contains fixed characters, the RAM contains custom characters soetimes, 
but usually is used to hold screen images in bit format, which are read 
by the controller and written to the display driver chips. The SED1330, 
for example can handle up to 4 'screens' one of these may be 
text,writing to a screen memory can then be done without changing the 
display until that screen becomes enabled, or, for example all 3 screens 
may be enabled with different characteristics such as logical AND bits, 
flash rate, frames drawn to create special effects. they also allow bit 
scrolling .

You can do all of this directly froma  a micro, but, in that case the 
micro typically must generate all the timign signals, and provide the 
memory for the screen image. A smaller micro like the MSP430 can easily 
handle a single small screen, but the other effects might be beyond its 
processign capability. However if all you need is a single screen of bit 
mapped graphics then this works really well. You will need to study the 
timing diagrams of the particular display you are using and then set up 
the MSP430 to produce these, with as little jitter as possible.

Al

john Mcdonald wrote:
>  
> Hi Al,
>  
> Would you elaborate on this a bit more please.  Whar are differences
between row and column drivers verses those with integrated driver chip.
>  
> High regards,
> John.
> 
> 
> onestone <onestone@ones...> wrote:
> You could drive the LCD directly from the MSP430 for most small types. 
> Find one like a Tianma (very cheap LCDs from China, but reliable) that 
> have only row and column drivers on board, much lower current 
> consumption than those with integrated driver chip.
> 
> Al
> 
> john Mcdonald wrote:
> 
> 
>> 
>>Dear all,
>> 
>>Would you know of a Dot Matrix LCD driver 32x64) that require a low
power consumption when the LCD is on.  Even though the MSP430 is a low power
consumption part but when you interface with an external LCD drivert the power
consumption goes up.
>> 
>>Thanks,
>>John.
>> 
>>
>>__________________________________________________
>> 
>>
>>
>>
>>
>>
>>
>>.
>>
>> 
>>. 
> 
> 
> 		
> ---------------------------------
> Do you Yahoo!?
>  Yahoo! Mail - You care about security. So do we.
> 
> 
> 
> 
> 
> 
> .
> 
>  
> Yahoo! Groups Links
> 
> 
> 
>  
> 
> 
> 
>