STMicroelectronics STEVAL-OET003V1

Overview

STEVAL-OET003V1 from STMicroelectronics is an automotive-grade evaluation board designed to validate ESD protection diodes in LIN/CAN bus environments. It implements a master-slave architecture using two STM8AF528 microcontrollers, integrates dual CAN (TJA1043T) and LIN (TJA1021T/10) transceivers, features a 5 V-to-12 V step-up converter (A7985A), and provides IEC61000-4-2 compliant ESD robustness testing capability for automotive electronics.

For engineers reviewing the STEVAL-OET003V1 datasheet, STEVAL-OET003V1 pinout, STEVAL-OET003V1 application, or STEVAL-OET003V1 equivalent, this board supports hands-on validation of ESD immunity, LIN/CAN communication loop integrity, transceiver supply stability under load, and real-time status monitoring via four onboard LEDs - critical for automotive ECU design verification and component qualification.

Technical Context

The board implements a closed-loop communication testbed where the master MCU initiates LIN/CAN frames and the slave MCU echoes responses, enabling deterministic fault injection and ESD stress testing at protocol level. Communication status is visualized through four dedicated LEDs indicating TX/RX activity and error conditions (ERR_N).

Power architecture includes a 5 V input stage with BNX002-01 line filter, a 5 V-to-12 V A7985A buck-boost converter supplying transceivers, and local 3.3 V regulation via LF33CDT-TRY. All bus interfaces incorporate automotive-grade ESD protection: ESDCAN24-2BLY on CAN, ESDLIN1524BJ on LIN, and ESDA14V2SC5Y on power rails.

Key Specifications

Availability

STEVAL-OET003V1 is available at Aetrix Electronics and suitable for automotive ECU validation, LIN/CAN transceiver qualification, and ESD immunity testing requiring stable component supply and traceable reference hardware.

Supply support for STEVAL-OET003V1 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 automotive, industrial, and power management solutions with broad IP portfolio and AEC-Q100 qualified product lines.

This evaluation board belongs to ST's STEVAL (ST Evaluation) series - purpose-built reference platforms that accelerate automotive system design by integrating validated signal chains, protection schemes, and communication stacks for rapid prototyping and compliance testing.

FAQ

What communication protocols does STEVAL-OET003V1 support?

STEVAL-OET003V1 natively supports both LIN 2.2A and high-speed CAN (ISO 11898-2) protocols via dedicated TJA1021T/10 and TJA1043T transceivers. The two STM8AF528 MCUs execute a bidirectional master-slave loop using these interfaces, with status LEDs confirming frame transmission, reception, and error detection (ERR_N assertion).

How is ESD robustness validated on this board?

ESD robustness is validated using pre-mounted automotive-grade Transil™ devices: ESDCAN24-2BLY on CANH/CANL lines, ESDLIN1524BJ on LIN bus pins, and ESDA14V2SC5Y on the 5 V input rail. The board conforms to IEC61000-4-2 Level 4 (±30 kV contact), and test points (ESD_TP1–ESD_TP7) allow direct ESD gun coupling to protected nodes during immunity testing.

Can the 12 V converter supply external loads beyond transceivers?

Yes - the A7985A-based 5 V-to-12 V step-up converter delivers up to 300 mA continuous output, sufficient to power two CAN transceivers (TJA1043T, ~70 mA each) and two LIN transceivers (TJA1021T/10, ~15 mA each), with margin for external instrumentation or auxiliary circuitry connected to the +12 V test point (TP2).

Is firmware provided for the STM8AF528 MCUs?

Yes - ST provides complete firmware source code and project files (IAR EWSTM8-compatible) in the official STEVAL-OET003V1 documentation package (DocID029650). The firmware implements LIN/CAN frame generation, echo response, LED control, and error flag monitoring, and can be reprogrammed via SWIM interface using ST-LINK/V2 or compatible debuggers.