SLUUBT5C November 2018 – June 2021 BQ40Z80
Set Settings:Pin Configuration[MFP17_SEL0][MFP17_SEL1][MFP17_SEL2] = 010 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, and when the button is pressed, the pin is shorted to VSS. This pin includes an internal weak pullup capability, which biases the pin high when the button is not pressed. The gauge detects when the button is pressed and enables the LEDs while it is held.