Several multifunction pins on the BQ76942 device can be used for general purpose ADC input (ADCIN) measurement, if not being used for other purposes. This includes the TS1, TS2, TS3, CFETOFF, DFETOFF, HDQ, DCHG, DDSG, and ALERT pins. When used for ADCIN functionality, the internal bandgap reference is used by the ADC, and the input range of the ADC is limited to the REG18 pin voltage. The digital fullscale range of the ADC is effectively 1.6667 × VREF1, which is approximately 2.02 V during normal operation. To configure the multifunction pins for this functionality, see the Section 6.4 section of this document.

When a pin is configured for ADCIN functionality, the voltage is reported in mV using the command that normally reports thermistor temperature on that pin. For example, if TS1 is configured for ADCIN functionality, the 0x70 TS1 Temperature() command will return a 16-bit signed value corresponding to the pin voltage in mV.

The BQ76942 device also reports the raw ADC counts in 0x0076 DASTATUS6() when a measurement is taken using the TS1 pin. This data can be used during manufacturing to better calibrate the ADCIN functionality.