How to Choose uart tft display?

Our COB UART display range starts at a 1.3&#; 240×240 resolution size and goes up to a 21.5&#; × full HD resolution and encompasses all the key display sizes in-between, also included are versatile bar types (letterbox format) and modern contemporary circular options as well as a range of super slimline COF versions.  IPS wide view technology is used extensively across the range, delivering wide viewing angles and consistent image quality across all viewing directions

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At the heart of the complete UART Display range is a dual-core processor based on the ever popular and stable intel architecture, plus DWIN&#;s own powerful development software, DGUS. The DGUS design tool allows system designers to build their graphical user interface including touch functionality by simply importing images, fonts and music files from popular software programmes, vastly reducing the GUI development time. Once complete your GUI can be quickly and simply transferred to the UART Display&#;s 16MB FLASH (expandable to 64MB) memory via SD card or RS232/USB adaptor boards.  

Communication to your application&#;s microprocessor is via the displays integrated UART interfaces, with a choice of TTL or RS232 with some models also having a dedicated RS485 or CAN-Bus.

The standard operating temperature range is -20°C to +70°C, however the demand for displays that can withstand harsh environmental conditions has become increasingly vital across various industries.  To address these needs DWIN have developed a range that emerge as a beacon of innovation, designed to thrive in severe environments where standard displays falter. Ranging from 3.5&#; to 15.0&#;, these displays boast standard sizes and formats, incorporating a blend of IPS wide view and TN TFT technology at competitive prices. Without doubt, the operational prowess of these displays spans an impressive -40C to +85C temperature range, ensuring resilience in extreme climates. Moreover, the incorporation of UV protection, ESD, EFT, Radio Interference, surge protection and a conformal coating on critical components to protect against moisture contamination, render them indispensable in hostile settings. Additionally, with full touch functionality provided by both 4-Wire resistive and Projected Capacitive technologies and a custom cover lens service make these displays a cutting-edge solution for diverse applications within medical, industrial automation, auto/aero/rail, and industrial process control markets.

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How to Choose a TFT display?
I put that question on Google search and got nothing. So I thought I would ask here:
(I'm using an UNO.)

1. Do I want a device with a controller?
2. I assume the TFT comes with a touch screen interface chip?
3. The TFT's seem to have 3 ways of interfacing to an Arduino:

• 16-bit or 8-bit parallel
• Serial (Is this an RS232 interface TTL interface?)
• SPI
• I2C
  a) Are any of these used jointly or do I pick one?
  b) Are they each used for a different purpose?

The reason for asking is the huge number of pins for the TFT display alone, The large number of Arduino pins available for IO to the TFT, and the delays caused by the low speed of the serial, I2C and SPI methods of moving data to and from the TFT module.

I note however that the project here (JanSpace.com is for sale | HugeDomains) uses what is almost identical to an UNO and yet manages to interface to 4-5 devices including the TFT module. It doesn't leave many IO lines for talking to anything else, however. Is there a better mcu for this purpose? and if so, why is it better?

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