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AM2612: Regarding the condition of the unused pin

MASAKI MIYASHITA
Prodigy 50 points

Part Number: AM2612
Other Parts Discussed in Thread: SYSCONFIG

I am configuring pin assignments using SysConfig for the AM2612.

What state will a pin be in if it is left unconnected in the hardware and no pin configuration has been set for it in SysConfig?

  • 0
    TI__Guru 60060 points

    A pin left unconnected in hardware and unconfigured in SysConfig will be in a high-impedance (Hi-Z) floating state after reset

    Specifically, the default reset state for most GPIO pins is:

    Parameter Default State
    Input buffer (RX) Off
    Output buffer (TX) Off
    Internal pull resistor Off
    Mux mode Mode 7 (GPIO)

    This "Off/Off/Off" configuration is documented in the pin attributes table of the AM2612 datasheet. With both input and output buffers disabled and no internal pull resistor active, the pin is electrically floating.

  • 0
    Prodigy 50 points

    Thank you. I understand.