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Forum Post: MSP430 Powered Down Input Impedance

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Hello, I saw this post, but it didn't seem to answer the question: https://e2e.ti.com/support/microcontrollers/msp430/f/166/t/497805 I have a similar question: I have a pull-up on one of the GPIO pins that is from a separate 3.3V power supply. Will this cause an issue if the device is powered off? Basically, is the pin high impedance, or blocked when powered off? I am concerned the device could have a stong enough leakage path from the GPIO pin to the internal VCC rail that the device could get into a quasi-powered on state. Please let me know if this should be a concern. Thanks, John

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