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CC2652R: GPIO Pull-Up/Down

Taylor Busch
Prodigy 325 points

Part Number: CC2652R

A quick question about the GPIO programmable pull-up or pull-down for the CC2652.

In the Technical Reference Manual for the CC2652, it describes the register to use to configure the pull-up or pull-down functionality of the GPIOs.

 The question is, what happens to the pull-up or pull-down functionality that was programmed when the chip is held in reset?  Are previously programmed pull-ups still pulled-up while in reset, or do the GPIOs float while in reset. 

  • 0
    TI__Guru** 101540 points

    Hi,

    You can find the answer in the Technical Reference Manual for CC2652. In the section dedicated to the I/O Controller (IOC), in the paragraph "Unused I/O Pins", it is written:

    By default, the I/O driver (output) and input buffer (input) are disabled (tri-state mode) at power on or reset, and thus the I/O pin can safely be left unconnected (floating).

    I hope this will help,