topic Re: MCU for 4.3" TFT Display in Kinetis Microcontrollers

MCU for 4.3" TFT Display

jhd — Wed, 25 Sep 2019 16:00:25 GMT

Hello,

I need to select one mcu for use with a 4.3" 480x272 TFT Display (full color). That is able to show the program on the screen in full color and communicate with an MKW41Z via SPI quickly.

Someone TFT display has 24bit-RGB, Parallel MCU, I2C, SPI, UART or USB intefaces, I have not clear which to use. Which do you recommend to use with Kinetis mcu?

And which Kinetis mcu do you recommend for this?

Best regards

Edited: I have found this doc that is cool Introduction to graphics and LCD Introduction to graphics and LCD technologies technologies

I have not experience with display , I don't know wich interface could simplify development time and BOM. So I'm not sure which interface to choose. I don't need a high resolution, only sometimes show a image but the most of the time the screen shows similar information this:

Re: MCU for 4.3" TFT Display

mjbcswitzerland — Wed, 25 Sep 2019 21:03:03 GMT

The K70 has an LCD controller that can directly interface to an RGB module (pure TFT without controller needed).

There are various Kinetis parts with FlexBus that are very efficient with TFTs based on controllers with parallel mode. If highest efficiency is not needed any Kinetis can also bit-bang parallel mode.

Any Kinetis can be used for SPI, I2C or UART connected TFT display with controllers offering these interfaces (or a Kinetis with USB can use a USB device one).

The following FTDI display is quite popular for SPI connected devices, based on a controller with graphic accelerator chip which allows simple control and videos etc.(with touch screen control) for simple Kinetis parts.

Here is is shown with a simulated Kinetis part interacting with FTDI's display simulation, which makes development and testing extremely simple:
https://www.youtube.com/watch?v=XxC3Y2NaaU8

Kinetis Graphical LCD: http://www.utasker.com/docs/uTasker/uTaskerLCD.PDF
Some TFT videos on Kinetis:
https://www.youtube.com/watch?v=n-GABeILGV8
https://www.youtube.com/watch?v=AdtRyQ-2IrE

Regards

Mark

Re: MCU for 4.3" TFT Display

jingpan — Fri, 27 Sep 2019 08:08:06 GMT

Hi Javier,

K70 is a good choice. But I will also recommend LPC54018 and LPC54608. They are NXP new product. The price is very competitive.

Regards,

Jing

Re: MCU for 4.3" TFT Display

jhd — Fri, 27 Sep 2019 09:50:35 GMT

Hi,

Thank you for the replies.

I prefer QFN package, but LQFP it's ok to me. MAPBGA I need at least 4 layer service because the traces are <5 mil. the solder paste is more expensive , T4 instance T3 and is necessary X-Ray inspection.

I need 800x480 px (no touch) instance of 480x272 because I need use the display in outdoor. The manufacturer of display say me that is not good election 480x272 for outdoor.

I'm thinking to use a display with built lcd controller, SPI, and use a Kinetis K2x or similar.

Not sure but I think that is more easy and cheap to me.

Best regards

Re: MCU for 4.3" TFT Display

jingpan — Sun, 29 Sep 2019 02:07:45 GMT

Hi,

Please check LPC1788FBD144. It is 144 pin LQFP package. LPC54018JBD208E is 208 pin LQFP and it is cheaper. But I think it will also increase your manufacture difficulty.

Regards,

Jing