topic Re: Diagnostics in MC33HB2000 series in Power Management

Diagnostics in MC33HB2000 series

adityavardhan — Thu, 03 Sep 2026 05:17:27 GMT

Hi,

I have few queries regarding the diagnostics in MC33HB200 series,

1. If a fault is triggered the fault status bit is flagged, which is read my the MCU and then the fault status register is read to confirm which fault it is. Is the understanding correct?
2. What is the difference b/w fault status register and fault status mask register and where it is used ?

Regards
Aditya Vardhan

Re: Diagnostics in MC33HB2000 series

guoweisun — Thu, 03 Sep 2026 06:54:36 GMT

Hi Aditya Vardhan

You are correct!

The Status / Fault Status register tells you what fault actually happened; the Fault Status Mask register only decides which of those faults will be reported on the FS_B pin

Re: Diagnostics in MC33HB2000 series

adityavardhan — Tue, 08 Sep 2026 08:56:29 GMT

Thanks for the prompt reply, so if I understand it correct if I perform bit wise AND operation of fault status register with appropriate number and store it in the mask status register, I will be able to ignore few faults?