S32KのトピックRe: S32K144 GPIO PIN

S32K144 GPIO PIN

mogilipuri_harish — Tue, 16 May 2023 11:22:15 GMT

we are using S32k144 uc in our designs. so when uC instillation time or startup time we pin no 47 operate like output and we will send one signal to external circuitry after instillation completion this pin will configured as input pin. Is it possible in this uC?? we are using 64 pin LQFP package.

Re: S32K144 GPIO PIN

VaneB — Tue, 16 May 2023 22:05:50 GMT

Hi @mogilipuri_harish

This is not a recommended application, but if possible what you have to do is deinitialize the pin and initialize it again with the desired configuration.

B.R.

VaneB

Re: S32K144 GPIO PIN

mogilipuri_harish — Wed, 17 May 2023 03:44:51 GMT

here our requirement is when system instillation time we will send some test signals to some circuit to get status of the circuit and after instillation it will act as input. can suggest what good way to go?

Re: S32K144 GPIO PIN

VaneB — Fri, 19 May 2023 21:38:32 GMT

Hi @mogilipuri_harish

The best recommendation is if you have an unused pin use one to be de input and the other one to be the output. But in the case of not having enough pins, it is possible to change the configuration of the pin as you said before, you just have to take care of setting up the pin properly. As I mentioned before you are going to need to deinitialize the pin and initialize again with the desired configuration.