GPIO Recommendation

[JK-IMX]

Hi i.MX Champ

My customer asked about GPIO with the following conditions.

Please check whan GPIO can be best choice to meet the condition below.

Pin : GPIO5_IO18, GPIO1_IO7, GPIO3_IO1

Condition : 

- To assign GPIO for Reset of Other Devices
- GPIO remains in a stable Pull-Up state even when i.MX 8MM is initialized or restarted.

ArrowElectronics_0-1663066733823.png

ArrowElectronics_1-1663066768315.png

ArrowElectronics_2-1663066799397.png

Please let us know what pin can be the best option to avoid glitch or unknown state during reset.

Thanks.

Regards, 

Arrow

[JK-IMX]

Hi Qmiller

Thanks for your kind answer.

Regards, 

James

[Zhiming_Liu · Accepted solution]

The NVCC_xxx will be pull down during reset.

Qmiller_0-1663739591801.png