Hello again
I am finally considering the first stage of implementation of this project.
I am thinking of getting the following TFT LCD (it is cheap!!)
http://www.wvshare.com/product/3.2inch-320x240-Touch-LCD-C.htm
it uses the ILI9325 and I ll be using a PIC18.
Now I have the following considerations (problems??)
1) First, this LCD requires 16 bits of data!!! So I will be using 16 pins of any MCU I use just for data! that is a lot! , Moreover, there are other pins for enable reset, read and write etc, plus the pins for the Touch Panel SPI interface.... suffice is to say that my old 18F2550 won't make it, will it?
So, I have here in the lab a PIC18F4553... (well actually is a small development board with that, and some leds, switches, crystal etc). Yeah I know I wont use the USB but counting the pins I have available in this , well, I make it by the skin of my teeth! I will use almost
all the pins to connect to the LCD and I know the programming will be a little less elegant....
(I know it is not the ideal, because what if my LCD is to control some other unrelated process- say a motor- then there would not be enough pins for that!)
2) Now if you see the above link you will notice it says
Note : this product should work with MCUs with 2.2V~3.6V IO voltage ONLY.
Well, that is a pickcle,
First I was thinking of using something like the 74HC4050 to interface it but again! too many pins! so I am thinking now of powering the PIC with 3.3V instead of 5V as I have always done
... Do you see a problem in this??
I am planning on ordering the LCD on monday so meanwhile, do you see any problem??
Thanks a lot for any advice, pointer or comment