sainsmart 3.2 ssd1289 tft lcd datasheet made in china

SainSmart 3.2" TFT LCD Display is a LCD touch screen module. It has 40pins interface and SD card and Flash reader design. It is a powerful and mutilfunctional module for your project.The Screen include a controller SSD1289, it"s a support 8/16bit data interface , easy to drive by many MCU like STM32 ,AVR and 8051. It is designed with a touch controller in it . The touch IC is ADS7843 , and touch interface is included in the 40 pins breakout. It is the version of product only with touch screen and touch controller.

SainSmart 3.2" TFT LCD Displayis a LCD touch screen module. It has 40pins interface and SD card and Flash reader design. It is a powerful and mutilfunctional module for your project.The Screen include a controller SSD1289, it"s a support 8/16bit data interface , easy to drive by many MCU like STM32 ,AVR and 8051. It is designed with a touch controller in it . The touch IC is ADS7843 , and touch interface is included in the 40 pins breakout. It is the version of product only with touch screen and touch controller.

The 3.2 inch TFT LCD module is a special design for Raspberry Pi for portable application. It features a 3.2” display with 320x240 16bit color pixels and resistive touchscreen.

The 3.2 inch TFT LCD module is a special design for Raspberry Pi for portable application. It features a 3.2” display with 320x240 16bit color pixels and resistive touchscreen.

In this Arduino touch screen tutorial we will learn how to use TFT LCD Touch Screen with Arduino. You can watch the following video or read the written tutorial below.

As an example I am using a 3.2” TFT Touch Screen in a combination with a TFT LCD Arduino Mega Shield. We need a shield because the TFT Touch screen works at 3.3V and the Arduino Mega outputs are 5 V. For the first example I have the HC-SR04 ultrasonic sensor, then for the second example an RGB LED with three resistors and a push button for the game example. Also I had to make a custom made pin header like this, by soldering pin headers and bend on of them so I could insert them in between the Arduino Board and the TFT Shield.

Here’s the circuit schematic. We will use the GND pin, the digital pins from 8 to 13, as well as the pin number 14. As the 5V pins are already used by the TFT Screen I will use the pin number 13 as VCC, by setting it right away high in the setup section of code.

I will use the UTFT and URTouch libraries made by Henning Karlsen. Here I would like to say thanks to him for the incredible work he has done. The libraries enable really easy use of the TFT Screens, and they work with many different TFT screens sizes, shields and controllers. You can download these libraries from his website, RinkyDinkElectronics.com and also find a lot of demo examples and detailed documentation of how to use them.

After we include the libraries we need to create UTFT and URTouch objects. The parameters of these objects depends on the model of the TFT Screen and Shield and these details can be also found in the documentation of the libraries.

So now I will explain how we can make the home screen of the program. With the setBackColor() function we need to set the background color of the text, black one in our case. Then we need to set the color to white, set the big font and using the print() function, we will print the string “Arduino TFT Tutorial” at the center of the screen and 10 pixels  down the Y – Axis of the screen. Next we will set the color to red and draw the red line below the text. After that we need to set the color back to white, and print the two other strings, “by HowToMechatronics.com” using the small font and “Select Example” using the big font.

sainsmart 3.2 tft lcd display is a lcd touch screen module. it has 40pins interface and sd card and flash reader design. it is a powerful and mutilfunctional module for your project.the screen include a controller ssd1289, it s a support 8 16bit data interface , easy to drive by many mcu like stm32 ,avr and 8051. it is designed with a touch controller in it . the touch ic is ads7843 , and touch interface is included in the 40 pins breakout. it is the version of product only with touch screen and touch controller. specification:

SainSmart 3.2" TFT LCD Display is a LCD touch screen module. It has 40pins interface and SD card and Flash reader design. It is a powerful and mutilfunctional module for your project.The Screen include a controller SSD1289, it"s a support 8/16bit data interface , easy to drive by many MCU like STM32 ,AVR and 8051. It is designed with a touch controller in it . The touch IC is ADS7843 , and touch interface is included in the 40 pins breakout. It is the version of product only with touch screen and touch controller.

3.2"" TFT LCD module with 40 IO, it is more than a LCD module and colleagues also includes an SD card slot, whether with touch function. (Here we are with touch screen function module)

With the increasing popularity of smartphones and tablet computers, touchscreen has become one of the most common user interfaces encountered today. The idea of this project came from some apps on the smart phone. It is very interesting to play a virtual Chinese chess on the mobile phone. People can take them everywhere and play it whenever they want. So we decided to build the electronic Chinese Chess game in our project. Meanwhile, LCD touch screen is a very popular thing used in electronic products, and doing the project will give us experience in utilizing a set of devices that is popular in modern devices. So in our final project, we designed a Chinese chess game application on touchscreen. Users can play Chinese chess on it. In addition, they can set the background as they like. Meanwhile, this project will also provide ECE4760 course a library for initializing and developing LCD touch screens of the same configuration for reference.

At the high level, our project mainly consists of two parts: the ATmega1284p microcontroller, the LCD touch screen. Atmega1284p is the main control part. When user presses on the screen, the signal will be sent to the MCU and some movements would be made. Also the MCU will control what is shown on the LCD screen and the state mode, based on the screen interrupt.

The hardware part of our project is not very complex. We soldered our Atmega1284p MCU and the LCD touch screen together. The LCD touch screen consists of two chips, SSD1289 LCD control chip and ADS7843 touch panel controller chip.

For the software part, the tricky part is to drive the LCD touch screen to work. Based on the driver code of similar lcd touch screen but of different configurations as ours, we read the datasheet of SSD1289 LCD control chip carefully, and changed the driver code so that it can be used to drive our LCD, and made it work. The other main part is to implement Chinese chess game rules, we defined a structure to store the chessmen’s information, so it is not that difficult. Another fussy part is to debounce each touch and adjust coordinates of touched points, because of the size limitation of the touch screen, we requires a high resolution, so the coordinates adjustment part is important. We figured a way out to debounce each touch with the help of a timer and adjust the coordinates by Putty.

From the high-level discussed above, our hardware consists of two parts, which include the LCD touch screen and the Atmega1284 prototype board. Below we will discuss each part separately.

The TFT 3.2′ LCD touch screen we use contains three parts, the touch panel, the TFT LCD screen and SD card. This touch screen has 40 pins. The TFT LCD use the control chip, SSD1289, while the touch panel uses the Analog Device ADS7843 touch screen controller. With our project, we can provide ECE4760 class the drive code for the LCD touch screen of such configuration.

Pin 4 to pin 17 ,pin 21 to pin 28 are for the TFT LCD screen display, pin 29 to pin 34 are for the touch panel, and pin 35 to pin 40 are for the sd card. Still there are some very important pins to be introduced. For the reason that microcontroller is always getting two hot if the VCC and GND of this touch screen is connected to the VCC and GND of the microcontroller, so we use additional voltage source for the touch screen. The VCC pin of the touch screen is connected to 5V. And the most important pin is the one for LCD back light. The LED-A pin for back light should be connected to 5V through a resistor of 75 ohm. This is a very important protection for the microcontroller and TFT LCD touch screen, or else both of them would be very hot.

SSD1289 TFT Driver is an all in one driver that integrated the RAM, power circuits, gate driver and source driver into single chip. It can drive a 262k color a-TFT panel with resolution of 240 RGB x 320. It also integrated the controller function and consists of up to 172,800 bytes (240 x 320 x 18 / 8) Graphic Display Data RAM (GDDRAM) such that it interfaced with common MCU through 8/9/16/18-bits 6800-series /8080-series compatible Parallel Interface or Serial Interface and stored the data in the GDDRAM. Auxiliary 18-bits video interface (VSYNC, HSYNC, DOTCLK, ENABLE) are integrated into SSD1289 for displays animated image.

The ADS7843 is a 12-bit sampling Analog-to-Digital Converter (ADC) with a synchronous serial interface and low on resistance switches for driving touch screens. By using this LCD, we can avoid refreshing the screen all the time compared with using a TV. The existence of GRAM in ADS7843 helps us to save the time in refreshing the screen. When we need to change what will be shown on screen, we just need to write the GRAM which replace the dots on the LCD.

The LCD we use is a 3.2″ TFT screen. It has a resolution of 320 × 240, as the following figure shows. There are 240 pixels each line and 320 pixels each column. We can use (x, y) coordinate to represent each pixel on screen.

Key control signals for SSD1289 TFT Driver are listed: lcd_reset, lcd_cs(chip select), lcd_rs(0 for register address, 1 for value), lcd_wr(0 for write), lcd_rd(set 0 all the time in this project).

The 3.2 inch TFT LCD module is a special design for Raspberry Pi for portable application. It features a 3.2” display with 320x240 16bit color pixels and resistive touch screen. The LCD is well mated with Pi board and interface with Pi via the high speed SPI port, and support console, X windows, displaying images or video etc. It also provides 4 press buttons for user defined functions.

RPi LCD needs to use a SPI interface, but in the original image file of Raspberry Pi, the displayer is driven via a HDMI port. So the original image is not applicable for RPi LCD, and you should install the LCD driver to your Pi or use the Ready-to-use image file provided by Sainsmart,click here.

Download the LCD driver and extract it to your Raspbian OS (e.g. copy the driver to your Pi by sftpor using U disk). Then run the following command via putty:

This LCD can be calibrated using a program called xinput_calibrator which is pre-installed on the offer image. However, it was not pre-installed on original Raspbian OS. So in this case, you should get and install the program manually with

After running these commands, there will be a prompt for four-point calibration shown in the LCD screen. Click the points one by one to finish the touch calibration. Then, the new calibration data will be displayed in the terminal, as shows below. Please get these data for future use.