SLUUBT5C November 2018 – June 2021 BQ40Z80
Set Settings:Pin Configuration[MFP13_SEL0][MFP13_SEL1][MFP13_SEL2] = 000 to select DISP. When this mode is selected, the pin is used for an LED display button function. In this mode, a normally opened switch button is connected between this pin and VSS. When the button is pressed, the pin is shorted to VSS. This pin includes an internal 18-kΩ pullup resistor to the internal LDO, which biases the pin high when the button is not pressed. The gauge monitors the pin periodically to detect when the button has been pressed, and then enables the LEDs while it is held.