F29H850TU: VDD POR availability for external VDD

Part Number: F29H850TU

Tool/software:

Hi Experts,

The TRM has the below description on VDD POR

"VDD supplied from an external supply: The VDD POR is not supported for application use. If VDD monitoring is required by the application, an external supervisor can be used to monitor the VDD rail."

However, from the below diagram, VDD POR is supported with external VDD

How to explain this?

Regards,

Hang