Shall I interface 7'' LCD display with STM32F103VCT6?

[aml chirayath]

Posted on February 21, 2017 at 06:32

I need to interface AT070TN92 7' LCD display (Driver element: a-Si TFT active matrix, Resolution: 800 × 3(RGB) × 480) with STM32F103VCT6 controller. The display have a back-light driver board. Is it possible to interface the display directly to the controller with out any LCD controller ICs. Here attaching the datasheet of display AT070TN

Thank you

#stm32cubemx-lcd #stm32 #stm32f103vct6 #stm32-tft-lcd-controller #tft-lcd #stmcubemx Note: this post was migrated and contained many threaded conversations, some content may be missing.

[T J]

Posted on February 21, 2017 at 15:26

No, sorry,

this LCD has a RGB parallel interface. you need a pixel rate of 20-46MHz and 8 red, 8 green and 8 blue pins.

these are not available on this processor.

some LCD modules accept the 8080 /6800 mode parallel interface, but not this one.

[aml chirayath]

Posted on February 22, 2017 at 05:42

Then how can I interface it? Is it possible with an LCD driver controller IC such as SSD1963?

[T J]

Posted on February 22, 2017 at 06:11

yes, like this one,

http://www.buydisplay.com/default/7-tft-screen-touch-lcd-display-module-w-ssd1963-controller-board-mcu

 

other wise, you have to make you own board with that chip installed.

I would recommend the RA8875 or RA8876 solutions. like this one:

http://www.buydisplay.com/default/serial-spi-arduino-5-inch-tft-lcd-touch-shield-ra8875-for-mega-due-uno

 

or 10'

http://www.buydisplay.com/default/serial-spi-arduino-10-1-inch-tft-lcd-touch-shield-ra8876-for-due

 

you can find heaps of these type on the net... search for SPI TFT LCD 7' RA8875 or RA8876 or SSD1963

[aml chirayath]

Posted on February 22, 2017 at 07:24

Now I have an option to choose SSD1963 for the interfacing. Using STM32F103VCT6 FSMC there is 8 bit or 16 bit parallel lines for the interfacing. I prefer 16 bit. SSD1963 output data lines for the interfacing of LCD are LDATA[0:23]. Is there any criteria to connect SSD1963 data lines with LCD(which LDATA connect to RGB lines of LCD)? Is it have any dependence with the STM32VCT6 FMSCdata bit selection?

I am attaching the datasheet of SSD19

Thank you

________________ Attachments : solomon_systech_ssd1963.pdf : https://st--c.eu10.content.force.com/sfc/dist/version/download/?oid=00Db0000000YtG6&ids=0680X000006Hytp&d=%2Fa%2F0X0000000bDe%2FAfEZcoCuq.YYhv2dCi9X3AAwSHEsgLT6RWuEHIdkAD8&asPdf=false

[T J]

Posted on February 22, 2017 at 11:27

will make your own private PCB ?

or will you use LCD with SSD1963 on board

[aml chirayath]

Posted on February 22, 2017 at 11:35

My LCD has only a back light driving board. I need to make a PCB of LCD data controller.

[T J]

Posted on February 22, 2017 at 11:41

with careful study, its pretty easy actually, just follow the steps on page 82 or 83.

make sure you have sufficient capacitance , otherwise you may see dots running over screen.

[aml chirayath]

Posted on February 22, 2017 at 12:00

Is there any dependence 

with STM32VCT6 FMSC data bit selection

 and table shown in page 15 ?

[T J]

Posted on February 22, 2017 at 12:20

Page 15 of SSD1963  

Table 6-5 LCD interface matching...  this page ?

Yes use the 24bit column..