TMS320F280049: F280049 XRSn internal pull up

Sheldon He

Expert 8585 points

Part Number: TMS320F280049

Hi expert,

How do I know the equivalent pull up resistor on XRSn pin of F280049?

Thanks

Sheldon

over 6 years ago

0 Frank Ankapong over 6 years ago

TI__Mastermind 28275 points

Hi Sheldon,

This is in the datasheet in the "Reset Timing" section. Attached below:

0 Sheldon He over 6 years ago in reply to Frank Ankapong

TI__Expert 8585 points

Hi Frank,

I'd to know the internal pull-up resistence of XRSn pin. Forgive me didn't describe it correctly.

Does the Ipullup here apply to XRSn pin?

Thanks

Sheldon

0 Frank Ankapong over 6 years ago in reply to Sheldon He

TI__Mastermind 28275 points

Sheldon,

Yes, those pull-up currents also apply to the internal XRSn pull-up. However, keep in mind that this is a very weak pull-up and the external stronger pull-up is required for correct functionality.

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TMS320F280049: F280049 XRSn internal pull up