DescriptionThe 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 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.The device is programmable through the I2C interface.MiniSO-8(Plastic micropackage)DFN8 3x312345678 IO0SDASCLGND VINROSCVCC CGPin connections(top view)www.st.comBlock diagramSTC31002/21 1 Block diagramFigure 1.STC3100 internal block diagramAD converter12 / 14 bits (signed)Accumulators and control registersI2C interfaceVINGNDSDASCLVCCGeneral-purpose I/O lineCG32 kHz time base1.2 VreferenceIO0AD converter11 bits (unsigned)Temp sensorRAM & ID registersMUXOscillatorROSCCG+CG-AM00830STC3100Pin assignment 3/212 Pin assignment Note:I: inputO: outputOD: open drainA: analogD: digitalTable 1.STC3 Features Battery voltage monitoringInternal temperature sensorCoulomb counter with 12/14-bit AD converter, +/- 80mV input voltage rangeInternal or external 32768Hz time baseI2C interface for gas gauge monitoring and device control32-RAM bytes8-byte unique device IDOne general-purpose I/OApplications Cellular phones, PDA, MP3 players, cordless phones Digital cameras, USB appliances, Bluetooth devices DescriptionThe 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 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.The device is programmable through the I2C interface.MiniSO-8(Plastic micropackage)DFN8 3x312345678 IO0SDASCLGND VINROSCVCC CGPin connections(top view)www.st.comBlock diagramSTC31002/21 1 Bl specifications, grade definitions and prod