CC2640R2F: GPIO I/O setting and I2C VOL does not low enough

Hampton Hsia

Prodigy 95 points

Part Number: CC2640R2F

Hi,

Would pull-up and pull-down enable be automatically closed when GPIO was configured to I2C?
What is the value of CMOS R_DS.ON when GPIO was configured to output mode?

Thanks,

Hampton

over 6 years ago

0 Fredrik K over 6 years ago

TI__Guru** 106705 points

Hi Hampton,

1. The drivers will re-define the IOs when opened. I2C specifically would enable internal pull-ups. External pull-ups are still required for I2C though.
2. As long as the max sink/source current is not violated the voltage drop will be within the datasheet numbers.

Regards,
Fredrik