MPC5748G Watchdog Clock configuration

[Ada_Lovelace]

Hi, I am using MPC5748G watchdog module.And how to config system clock?Can you give me some guidance?In addition, MPC5748G watchdog need FCCU?

[petervlna]

Hello,

I am using MPC5748G watchdog module.And how to config system clock?

System clock is configured in CGM module and then you need to do mode transition in Mode entry module (ME).

Example:

Example sw can be found here:

https://community.nxp.com/t5/MPC5xxx-Knowledge-Base/MPC5-software-example-list/ta-p/1102445#MPC5748G

In addition, MPC5748G watchdog need FCCU?

On this device you dont need FCCU for reset from SWT. It is routed directly to reset module.

However, you can also set FCCU react on SWT event, usually it is good to have redundant path for SWT event. Depends on safety level of application.

best regards,

Peter

[Ada_Lovelace]

Hello, Peter

I have another question. Does the reset module need to be configured manually? Or does SWT timeout automatically trigger the route to reset?

Can you give me some guidance? thank you.