topic Re: MCX-N947 How to output 8080 8-bit data for LCD(RGB565) in MCX Microcontrollers

MCX-N947 How to output 8080 8-bit data for LCD(RGB565)

billie — Thu, 31 Jul 2025 04:51:50 GMT

Hi,

I'm going to use new LCD which has 8080 8-bit interface with MCXN947.

So, I'd like to check 8080 8-bit data output of MCXN947 with LCD-PAR-S035.

As you know, LCD-PAR-S035 can be changed 8080 8-bit mode from 16-bit mode.

So, I changed that fsl_flexio_mculcd.h and pin_mux.c.

- fsl_flexio_mculcd.h : #define FLEXIO_MCULCD_DATA_BUS_WIDTH 8UL

- pin_mux.c : Flexio_D16 ~ FlexIO_D23.

However, I can't see correct output on the LCD(LCD-PAR-S035) like attached images.

Please let me what to fix in order to get correct output.

Regards,

Billy(Seongjin)

Re: MCX-N947 How to output 8080 8-bit data for LCD(RGB565)

Celeste_Liu — Mon, 04 Aug 2025 09:29:00 GMT

Hello @billie ,

Thanks for your post. Could you let me know which demo you are using and the version of the SDK? I will help you check it out.

BRs,

Celeste

Re: MCX-N947 How to output 8080 8-bit data for LCD(RGB565)

billie — Mon, 04 Aug 2025 23:34:45 GMT

Hi Celeste,

Here are the version of SDK and demo example.

In my testing, latest version SDK doesn't work with LCD-PAR-S035.

SDK : SDK_2_x_MCX-N9XX-EVK - 2.16.000
Demo example : mcxn9xxevk_lvgl_demo_benchmark_bm

Regards,

Billy(Seongjin)

Re: MCX-N947 How to output 8080 8-bit data for LCD(RGB565)

Celeste_Liu — Thu, 07 Aug 2025 03:32:02 GMT

Hello @billie ,

Thanks for your information. I'm still working on this. Please allow me more time and I'll let you know as soon as I have any progress.

BRs,

Celeste

Re: MCX-N947 How to output 8080 8-bit data for LCD(RGB565)

billie — Fri, 08 Aug 2025 04:38:28 GMT

Hi Celeste,

8080 8-bit bus data output of N947 is confirmed.

Thanks for your support.

Regards,

Billy(Seongjin)

Re: MCX-N947 How to output 8080 8-bit data for LCD(RGB565)

Celeste_Liu — Fri, 08 Aug 2025 05:15:37 GMT

Hello @billie ,

Thank you for your sharing. As you said, I will close this thread. If there are any new issues, please feel free to create a new post.

BRs,

Celeste

Re: MCX-N947 How to output 8080 8-bit data for LCD(RGB565)

xiaobai_226 — Wed, 03 Dec 2025 01:57:34 GMT

I also encountered this problem. Could you please tell me how to modify the code in the sdk? Could you teach me how to do it? Thank you

Re: MCX-N947 How to output 8080 8-bit data for LCD(RGB565)

xiaobai_226 — Wed, 03 Dec 2025 02:16:53 GMT

After reading your article, I solved the pin problem. Thank you for sharing. Thank you