strange behaviour of Graphic LCD

[mystery]

we are trying to drive a sed1335(3.3V) based 320x240 graphic lcd with msp430 family. When we try to write a data which have 7 or 8 ones (like 0xFF, 0xEF,0xDF ....) , the lcd starts to flicker .
How can we resolve this problem?

One tip that come in my mind is , msp430f149 can not supply enough current to sed1335???

I need this info urgently , please help me.


thanks

 

[kentken]

How often are you updating the data on the display?


Kent

 

[mystery]

We care the cycle limitations of sed1335 and 5 times per second?

 

[kentken]

Did you say you are updating the display 5 times a second?:?

The display only needs to be updated when there is new data.

Are you updating the whole display or just parts?

Also, what kind of project is this?

Kent

 

[Ahmed Ragab]

I guess you shouldn't really update the data at all unless ur putting new data to be displayed
i worked with a character LCD display before
all it needed was the data once ... and only when u send the new data should u update it .
Try it

 

[mystery]

We only update the new parts. Actually no need to update, if you read it many times it starts to flicks....
We tried to find the problems for many weeks )
At then end we changed the company and LCD of course there is no problem. Everyting is OK now.

Thanks