I would like to develop HMI hardware using STM32F746 with 480x272 Graphical LCd, But i have confusion on selection of Graphical LCD?Am i select Graphical LCD with graphic controller or without graphic controller? STM32F746 inbuilt LCD controller.
the easiest way is BuyDisplay 10" Touch RA8876,
it runs on 2x SPI ports.1 SPI for LCD and 1 SPI for Touch.
and leaves your processor running full speed without using the on board LCD controller
thanks for reply,but i would like to develop a product for home automation system ,so i need many GLCD,and also i have general question,because lcd without graphic controller is cheap.
The alternative is the 4.3" LCD with touch $23 from china
I paid $35 for an 18" LVDS panel, the drive board I made costs about $15.
In India 4.3" LCD in INDIA WIthout Controller(like SSD1963) about $18 and with controller $25, do i need display controller or not?Also clear doubt between LCD Controller and LCD Driver.
the STM32F7 series have an LCD DRIVE for 8:8:8 RGB panels using about 30 pins.
but it only supports 800x600 about... and the processor is slow since it is running the LCD 8:8:8 and pixel clock, etc.
however, if you disable the onboard LCD DRIVE, you need an LCD with controller. (and touch, generally)
Yes, the SSD1963 or RA8875 or RA8876, they are all controllers that offload the heavy work from the processor.
The module here is SPI interface, 4.3" Ra8875 with touch $23 from China.
Ok,In SPI mode we also need so much attention of mcu to send data to lcd,then i think send parallel data is better and also i would like to know in 32discovery746 or 769 on board lcd is with separate lcd controller or not,they working fine with good speed.
For a Video controller to MCU interface,
Yes, Parallel is faster than SPI,
SPI is too slow for video.
if you don't need all the horse power available, I think those boards are running the RGB 8:8:8 or 5:6:5 interfaces directly on the processor pins.
It is a fast interface.
Quite workable with small LCDs , ie.800x600 max
For 800x600 resolution - only RGB control!
For example my project
GitHub - golf2109/STM32F746IG-StemWin-800x480: STM32F746IG StemWin library & display 800x480
Yes,i knowi,STM32F7xx able to control RGB,but i would like to know GLCD used by you is with inbuilt GLCD Controller or you use STM32F7xx as GLCD Controller?
I used STM32F769 for control GLCD with RGB interface.
I tried control GLSD 800x480 with SSD1963 controller.
It is very very slow to fill screen1-2 sec for 800x480.
My project for SSD1963
GitHub - golf2109/STM32F429ZI_SSD1963_FT5336: STM32F429 & 7" display with FT5336 touchscreen
ER-TFT070-4 800 * 480, one contact 3.3V power supply digital part. RGB 8 * 8 * 8. 18 dollars.The minimum headache when connecting to the st chip, without additional intermediate interfaces.
A large resolution weakly improves image quality, but very well increases the price. On sale there are RGB displays without a built-in D / A converter and a high-voltage stabilizer - from $ 4. Such cheap displays can be used in the presence of experience in analog circuitry.
Retrieving data ...