GPIOs concern

Son Nguyen

Dear Sir,

I have some concerns regarding GPIO setting.

According to KL720 HW Design guide v0.2 document, we saw that "GPIO do not have internal pull-up or pull-down resistor and they need to pull-down to GND if unused"

But in the KL720 datasheet v1.2, we saw that "GPIO could program general-purpose I/O and pull type."

Thus, I have some questions about GPIO setting:

1. Could we program/set internal pull-up or pull-down resistors for GPIO?
2. All GPIOs have interrupt function, right?
3. What is the configured/recommendation for unused GPIO pins?

Son Nguyen

Hi all,

Does anyone have answer for these questions?

eddie.kuo

Hi Sir

1. Yes, the GPIOs can all be programmed to set pull-up or pull-down.
2. Yes, all GPIOs have interrupt functionality.
3. For unused GPIO pins, they are left floating in the HW design by default and configured as input mode in the FW settings.

Son Nguyen

https://www.kneron.com/forum/discussion/comment/1754#Comment_1754

Thank Eddie