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K22 I2C0 pull downs crash I2C bus

Question asked by Kevin Luty on Jan 5, 2017
Latest reply on Jan 5, 2017 by EARL GOODRICH

I'm working with the K22 and removed power from the chip, however kept I2C0_SDA and I2C0_CLK on PORTB connected to the I2C bus.  When I keep them connected while the chip is powered down, it pulls the entire I2C bus down.  When I remove the K22 from the bus, the bus operates as it should.  


What can I do, from the K22 side, to prevent this from happening, as I believe the pull-down is internal to the chip itself?