GPIO i.MX RT1170

[TM_MI]

Hello,

I would like to know the restrictions or limitations for the GPIO ports. The processor used is i.MX RT1170 / Cortex-M7.

I understand that some I/O are dedicated, GPIO 13 require longer access time and that GPIO banks work on different voltage levels. Is there any restrictions or limitations on using GPIO (SD, EMC, DISP, SNVS, LPSR,…..) to interface with other ICs? Is it ok to use GPIO with Flexspi functionalities to communicate with other ICs? Are all GPIO banks on chip behave entirely as general purpose I/O or there are some considerations?

Thanks

[kerryzhou]

Hi @TM_MI ,

  Please check the following table which has been summarized it internally.

Wish it helps you!

If you still have questions about it, please kindly let me know.

Best Regards,

Kerry

[TM_MI]

Hello @kerryzhou ,

Thank you for your reply.

My experience is limited in this field; could you please provide more information about continuous modes.

I am looking to replace the NVCC supply on NVCC_SD1, SD2, DISP1, and DISP2 with VDD_3V3.

I will then be using most of the GPIO banks listed above to control ICs and for serial data communication.

Regards,

Tarek

[kerryzhou · Accepted solution]

Hi @TM_MI 

   continuous mode means with supply voltage in 1.71V-3.6V.

   But not all the IP support the continuous mode, that's why I give you the above table, we summarize it from the RT1170RM.

To your mentioned :SD1, SD2, DISP1, DISP2

If you want to power on it with 3.3V, just connect the related NVCC_XX to 1.0-3.6V.

Wish it helps you!

Best Regards,

Kerry