STMicroelectronics STEVAL-ISB011V1

Overview

STEVAL-ISB011V1 from STMicroelectronics is a demonstration board for Li-ion battery monitoring, integrating the STC3100 Coulomb counter/gas gauge and STM32 microcontroller. It measures battery voltage (0–4.5 V), temperature (–20 °C to +70 °C), charging/discharging current (±5 A), and supports up to 7300 mAh capacity monitoring. The board enables real-time parameter display on an LCD and USB-based communication to PC via virtual COM port.

For engineers reviewing the STEVAL-ISB011V1 datasheet, STEVAL-ISB011V1 pinout, STEVAL-ISB011V1 application, or STEVAL-ISB011V1 equivalent, this board serves as a validated reference for evaluating STC3100 gas gauge functionality, USB-to-STM32 interface design, Li-ion battery state-of-charge estimation, and embedded firmware integration with analog sensor front-ends.

Technical Context

The board implements a dual-chip architecture: the STC3100 performs high-accuracy coulomb counting and voltage/temperature sensing using an internal 16-bit ADC, while the STM32F103C8T6 MCU handles USB CDC communication, LCD control, switch input scanning, and STC3100 register configuration over I²C. Clock source selection includes internal RC, external crystal (32.768 kHz), or MCU-generated clock.

Power management supports three modes: USB-powered operation (5 V), DC adapter input (5–12 V), and onboard STC4054 linear charger for single-cell Li-ion (4.2 V termination). Four tactile switches enable menu navigation, and jumper options allow external MCU substitution or STC3100 clock source reconfiguration.

Key Specifications

Availability

STEVAL-ISB011V1 is available at Aetrix Electronics and suitable for battery management system validation, embedded firmware development for gas gauge integration, and Li-ion protection circuit prototyping requiring stable component supply and documented reference design support.

Supply support for STEVAL-ISB011V1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in microcontrollers, power management, analog, and sensor solutions for industrial, automotive, and consumer markets.

This board belongs to ST's STEVAL (ST Evaluation) series, designed specifically to accelerate evaluation and firmware development for ST's battery monitoring ICs and MCUs in portable and energy-sensitive applications.

FAQ

Is STEVAL-ISB011V1 still in active production?

No - STEVAL-ISB011V1 is marked obsolete per ST's official documentation (Doc ID 17197 Rev 1, March 2010). It remains available through authorized distributors for legacy design support and educational use, but no new silicon revisions or firmware updates are planned.

Can the STC3100 be replaced with another gas gauge IC on this board?

No - the STC3100 is soldered and not socketed; its I²C address, register map, and analog signal routing (voltage, current, temperature) are fixed to match ST's reference firmware. Substitution would require PCB redesign and full firmware adaptation.

Does the board support external battery chargers?

Yes - jumpers J3 and J4 isolate the onboard STC4054, allowing connection of an external charger to the BAT+ and BAT– terminals. The STC3100 continues monitoring regardless of charging source, enabling charger performance evaluation.

What software tools are required to communicate with the board?

A terminal emulator (e.g., Tera Term or PuTTY) configured for the virtual COM port is sufficient. ST provides basic PC software and source code (including STM32 firmware) in the associated firmware package (STSW-ISB011), compatible with Windows and requiring no proprietary IDE.