6 Pin Configuration and Functions

Table 6-1 Pin Functions

NUMBER	NAME	I/O	DESCRIPTION
D2	BAT	P⁽¹⁾	Battery voltage measurement input. Kelvin battery sense connection to BAT_SNS. Connect a capacitor (1 µF) between BAT and VSS. Place the capacitor close to the gauge.
D3	CE	I	Active high chip enable
C2	BAT_SNS	AI	Battery sense
A1	INT	O	Interrupt for voltage, temperature, and state of charge (programmable active high or low)
A2	PULS	O	Programmable pulse width with active high or low option
B1	TS	AI	Temperature input for ADC
C3	NU	NU	Makes no external connection
B3	SCL	I/O	Serial clock for I²C interface; requires external pull up when used. It can be left floating if unused.
A3	SDA/HDQ	I/O	Serial data for I²C interface and one-wire interface for HDQ (selectable); requires external pull up when used. It can be left floating if unused.
D1	SRP	I	Analog input pin connected to the internal coulomb counter peripheral for integrating a small voltage between SRP (positive side) and SRN
C1	SRN	I	Analog input pin connected to the internal coulomb counter peripheral for integrating a small voltage between SRP (positive side) and SRN.
B2	VSS	P	Device ground

(1) P = Power Connection, O = Digital Output, AI = Analog Input, I = Digital Input, I/O = Digital Input/Output, NU = Not Used