The STC3100 monitors the critical parameters of a single-cell Li-Ion battery (voltage, temperature and current) and includes hardware functions to implement a gas gauge for battery charge monitoring, based on a programmable 12- to 14-bit A/D converter. With a typical 30 milliOhms external sense resistor, the battery current can be up to 2.5 A and the accumulator system provides a capacity up to +/-7000 mAh with a resolution of 0.2 mAh.

8-byte unique device ID
32-RAM bytes
Battery voltage monitoring
Coulomb counter with 12/14-bit AD converter, +/- 80 mV input voltage range
Internal temperature sensor
I2C interface for gas gauge monitoring and device control
One general-purpose I/O
Internal or external 32768 Hz time base