With the keyboard interrupts, or KBI, each pin is selectable for rising-high level/falling-low level active edge-level. There are twelve general-purpose input/output (I/O) pins, one input-only pin and one output-only pin; outputs 10mA each, and 60mA max for package. There are software selectable pull-ups on ports when used as input and software selectable slew rate control and drive strength on ports when used as output.