hello my name is Simone I have a problem with Arduino Mega 2560 can not connect an lcd tft 3.2 with 40-pin
I need a chart image for the link between arduino and lcd
please help me
If the lcd has 40 pins, it sounds like it doesn't have a driver chip included, which will make it very difficult to drive from an Arduino. Get an lcd module that includes driver chips instead.
If it is the same 3.2" as mine it has a description like: ( http://www.ebay.com.au/itm/180735519914?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649#ht_6204wt_952 )
3.2" inch TFT LCD module integrated a Himax HX8347-A TFT LCD controller and ADS7843 compatible touch screen controller as well as a SD card cage. It is suitable for embedded systems which require display high quality colorful image or video with interactive control and storage purpose. The Module interfaces to microcontrollers via a 2*20 Pin 2.54mm dual row pin header interface , can easily be connected to any microcontroller or FPGA and DSPs.
Pin table is in ebay description and probably the HX8347-A datasheet.
I'm about to start interfacing mine as well.
and again thanks for the help you are giving me.
LCD is the same as the link above
My head really hard I can not figure out how to connect 40-pin
You can make a design where I can see the connection wires between LCD and arduino
I literally cut open the package today, but when I get a working example up I will let you know.
There are a number of points to verify first. ( search HX8347-A or HX8347A in the forum for previous members experience ).
I'm not sure but either the display voltage and or the logic pins run on 3.3v so care must be taken if the controller does not have a regulator.
You will only need pins 1 to 28 for the display in full 16-bit mode.
DB8 to DB15 I assume are not used for 8-bit interface.
Apart from this i'm not much help at the moment.
Added data sheet too. tried to but too large.
This is the link of my LCD
http://www.ebay.it/itm/280724961864?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649
as I do I can not understand
What does DB0 DB1 !.............
where I can see the connections
help....
On the topside of the LCD the 40 pins interface has pin labels. Closest to the edge of the PCB are pins 1 to 20, the row behind are pins 21 to 40. I have provided the LCD panel datasheet. It describes the layout of the panel.
DB0 to DB17 are the parallel data interface, 18-wires, the other pins control the contrast, backlight, and provide memory/instruction register control.
Before you connect the LCD you need to decide what type of connection do you want, do you have enough pins for 16-bit mode or only 8-bit, on a uno I would assume you will be restricted to serial mode or parallel via shift registers. Some modes may not support both read and write functionality.
This does not look like a very friendly LCD to start with. A 128x64 graphic LCD would be a better start to lean about LCD interfacing.
EDIT: this display offers so many modes. 8bit, 16bit, 18bit with the ability to send the data in one pass ( most pins ) or up to three passes. and with options for 65k colours up to 262k, then there is the serial option on top of that.
search for the HX8347-A datasheet as well, this will explain the LCD instructions and what pins are needed for them.
???240374PQ (1).pdf (405 KB)