PSoC™ 4 Forum Discussions

[saga_1136906]

Hi,

I wish to know what's the better solution for the treatment of unused pin for devices  CYBLE-012011-00 and CY8C40xx.

Thanks in advance.

[Yugandhar]

Hello,

All unused GPIOs can be configured to Analog HI-Z unless there is a specific reason to use a different drive mode. A Pins Component’s port-wide drive mode may be set using the _SetDriveMode() function.
Please refer to the section '6.3 GPIOs' in the datasheet.

Thanks,
P Yugandhar.

[saga_1136906]

Hi Yugadhar,

my I wish to be shure that the pins have no problems with high Zi in case of ESD and EMC.

Thanls

[MaMi_1205306 · Accepted solution]

Hi,

If you are concerned about ESD regarding the processing of unused terminals, it is described in the application note.

The following is an excerpt:

It is recommended to set the pin to Hi-Z and pull-up / pull-down with an external resistor (1k to 10k Ohm).

AN80994 URL

https://www.infineon.com/dgdl/Infineon-AN80994_Design_Considerations_for_Electrical_Fast_Transient_(...

Regards,