About the internal circuit of GPIO_0 of CYW43438

[KeOn_]

I have a question about CYW43438.

I don't know if GPIO_0 needs an external pullup.

Please tell me the mechanism of the terminal of GPIO_0. (CMOS or open-drain output?)

 I thought it was not an open-drain output from the datasheet, but I didn't understand how to output.

Best regards

[DheerajPK_41 · Accepted solution]

Hi,

GPIOs are tristated by default. Subsequently, they can be programmed to be either input or output pins via the GPIO control register. They can also be programmed to have internal pull-up or pull-down resistors.

So no need for any external pullup.

Thanks,

-Dheeraj.P.K