Looking through the datasheet for the DT035BTFT-PTS2, the drawing on page 4 makes it look as though the capacitive touch I2C interface is 1.8V logic.  However, the touch controller (FT5x46) datasheet says the touch controller operating voltage is up to 3.6V.  Can the capacitive touch I2C interface on the DT035BTFT-PTS2 therefore be run at 3.3V so I can avoid a level translator?