SBC FS0B and FS1B hardware connections

[mogilipuri_harish]

hello

we are using FS2633 SBC and S32k144 uC in our designs. in uC S32k144 which pins we can connect to SBC FS2633 FS0B and FS1B.

[diazmarin09]

Hello,

I hope all is great with you. Thank you for using the NXP communities.

I do recommend using the S32K312EVB-Q172 as a reference for your design. The schematic is available to download.

Those pins are used as actuators for safe state.

I hope this information helps.

Regards,

David

[mogilipuri_harish]

1.if we are not using pins how we will know safety status of uC 

2. in S32k312 having FCCU pins we can connect, but in s32k144 doesn't having FCCU and how to implement the safety monitoring's in between uC(S32K144) and SBC(FS2633)

[diazmarin09]

Hello,

Please accept my apologies for the delayed response.

I do recommend using the Safety outputs pins. They are provided to keep the system in a safe state until the microcontroller acknowledges it is safe to start normal operation, or when a fault is present. When a fault is present, these outputs prevent the system from entering an unsafe state.

Have you considered using the RSTB pin?

The RSTB pin is provided to inform the microcontroller that system power supplies are up and in regulation regardless of the results of the ABIST. A configurable watchdog counter is included to ensure the microcontroller is able to communicate with the FS26, which can react to any failure condition and place the system in a safe state.

Regards,

David