TMS320F28069: GPIO default value

Emma Wang

Expert 4920 points

Part Number: TMS320F28069

Hi expert,

Just want to know if we configure GPIO as output and disable pull up.

how about the output status?

From the datasheet, I think it is high Impedance for both input and output. am I right?

Emma

over 3 years ago

0 Cody Watkins over 3 years ago

TI__Mastermind 42195 points

If a GPIO is configured as an output, and the GPIO option is selected in the mux, then the device will attempt to drive the last value written to the GPxDAT register.

Regards,
Cody

0 Emma Wang over 3 years ago in reply to Cody Watkins

TI__Expert 4920 points

Cody,

Thanks for your reply.

So, it is changeable depend on external level if I did not write on GPxDAT. Am I right?

since we did not have a reset value for it?

Emma

0 Cody Watkins over 3 years ago in reply to Emma Wang

TI__Mastermind 42195 points

An x indicates that the value is unknown. Port B does have some definitions.

If you wish the GPIO to be in a known state please add an external pull resistor.

Regards,
Cody

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C2000 microcontrollers forum

TMS320F28069: GPIO default value