STEVAL-ISB009V1 STMicroelectronics, STEVAL-ISB009V1 Datasheet
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STEVAL-ISB009V1
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STEVAL-ISB009V1 Summary of contents
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Battery monitor IC with Coulomb counter/gas gauge Features ■ Battery voltage monitoring ■ Internal temperature sensor ■ Coulomb counter with 12/14-bit AD converter, +/- 80 mV input voltage range ■ Internal or external 32768 Hz time base ■ I2C interface ...
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Block diagram 1 Block diagram Figure 1. STC3100 internal block diagram VCC SCL SDA 2/21 1.2 V reference AD converter 11 bits (unsigned) Accumulators and control registers AD converter bits (signed) General-purpose I/O line I2C interface RAM ...
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STC3100 2 Pin assignment Table 1. STC3100 pin description Pin # Pin name 1 IO0 2 ROSC 3 SDA 4 SCL 5 GND VCC 8 VIN Note: I: input O: output OD: open drain A: analog D: ...
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Absolute maximum ratings and operating conditions 3 Absolute maximum ratings and operating conditions Table 2. Absolute maximum ratings Symbol Vmax Maximum voltage on any pin Vio Voltage on I/O pins Tstg Storage temperature Tj Maximum junction temperature ESD Electrostatic discharge ...
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STC3100 4 Electrical characteristics Table 4. Electrical characteristics (2.7 V < V Symbol Parameter Supply I Operating current consumption CC Istby Current consumption in standby Ipdn Current consumption in power down UVLOth Undervoltage threshold UVLOhyst Undervoltage threshold hysteresis POR Power-on ...
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Electrical characteristics Table 4. Electrical characteristics (2.7 V < V Symbol Parameter Battery voltage and temperature a/d converter Vin_adc Input voltage range LSB LSB value ADC_time AD conversion time (32,768 Hz clock) Volt_acc Battery voltage measurement accuracy 2.7 V<Vin<4.5 V, ...
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STC3100 5 Typical performance curves Figure 2. Standby current vs. temperature 1.6 Vcc=4.5V 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 -50 - Temp (°C) Figure 4. Oscillator frequency accuracy vs. temperature 2.0 1.5 1.0 0.5 0.0 -0.5 ...
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Application information 6 Application information Figure 6. Example of an application schematic using the STC3100 Rosc IO voltage Table 5. External components list Name Rcg mΩ Rosc 8/21 ROSC STC3100 SCL SDA GND Value ...
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STC3100 7 Functional description 7.1 Gas gauge The gas gauge is used to monitor the available battery capacity. The voltage drop across the external sense resistor is integrated during a conversion period and input to a 12- to 14-bit AD ...
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Functional description The conversion cycle for n bit resolution is 2 clock, the conversion cycle time is 125 to 500 ms for a 12- to 14-bit resolution. The LSB value is set by the internal gain and internal reference and ...
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STC3100 7.5 Unique device ID The STC3100 provides a means to identify the battery pack or the subsystem. Each device has its own unique 8-byte ID made of an 8-bit part ID (value = 10h for the STC3100), a 48-bit ...
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I2C interface 8 I2C interface 8.1 Read and write operations The interface is used to control and read the current accumulator and registers compatible with the Philips I2C registered trademark (version 2.1 slave serial interface ...
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STC3100 Figure 8. Read operation Master Slave Start Device addr W A Reg address 7 bits 8 bits Start bit = SDA falling when SCL = 1 Stop bit = SDA rising when SCL = 1 Restart bit = start ...
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I2C interface 8.2 Register map The register space provides 12 control registers, 8 read-only (factory OTP) registers for unique device ID and 32 read/write general-purpose RAM registers. Mapping of all registers is shown in Table are shown in Table 10 ...
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STC3100 Values held in consecutive registers (such as the charge value in the REG_CHARGE_LOW and REG_CHARGE_HIGH registers) must be read with a single I2C access to ensure data integrity possible to read multiple values in one I2C access, ...
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Package information 9 Package information In order to meet environmental requirements, ST offers these devices in different grades of ® ECOPACK packages, depending on their level of environmental compliance. ECOPACK specifications, grade definitions and product status are available at: www.st.com. ...
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STC3100 9.1 MiniSO-8 package information Figure 10. MiniSO-8 package mechanical drawing Table 12. Miniso-8 package mechanical data Ref ccc Dimensions Millimeters Min. Typ. Max. 1.10 0.15 0.75 ...
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Package information 9.2 DFN8 package information Figure 11. DFN8 3x3x1.0 mm package mechanical drawing (pitch 0.5 mm) Table 13. DFN8 3x3x1.0 mm package mechanical data (pitch 0.5 mm) Ref ...
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STC3100 10 Ordering information Table 14. Order codes Part number STC3100IST STC3100IQT Temperature Package range MiniSO-8 -40°C, +85°C DFN8 Ordering information Packing Marking Tape & reel O201 19/21 ...
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Revision history 11 Revision history Table 15. Document revision history Date 27-Jan-2009 20/21 Revision 1 Initial release. STC3100 Changes ...
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... STC3100 Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. ...