STMicroelectronics STEVAL-ILD004V1

Overview

STEVAL-ILD004V1 from STMicroelectronics is an evaluation board designed to demonstrate the STM8S103F3 8-bit microcontroller in LED driver control applications, featuring a 16 MHz STM8 core, 8 KB Flash, 640 B EEPROM, 10-bit ADC, UART/SPI/I²C interfaces, and up to 28 I/Os in LQFP32/UFQFPN32 packages.

For engineers reviewing the STEVAL-ILD004V1 datasheet, STEVAL-ILD004V1 pinout, STEVAL-ILD004V1 application, or STEVAL-ILD004V1 equivalent, this board enables rapid validation of STM8S-based constant-current LED control, PWM dimming, thermal monitoring, and serial configuration via UART or I²C in lighting and industrial HMI designs.

Technical Context

The board implements the STM8S103F3 MCU as the central controller for LED current regulation using its advanced 16-bit TIM1 timer with complementary outputs and dead-time insertion, enabling precise high-side/low-side gate drive for external MOSFETs in buck or boost LED drivers.

It leverages the MCU's integrated 10-bit ADC (5-channel multiplexed) for real-time LED current sensing and temperature feedback, while UART and I²C interfaces support host communication for brightness and fault reporting-fully supported by ST's STM8 Standard Peripheral Library and STVD/STVP development tools.

Key Specifications

Availability

STEVAL-ILD004V1 is available at Aetrix Electronics and suitable for LED driver prototyping, industrial HMI interface development, and embedded lighting control requiring stable component supply and full ST ecosystem compatibility.

Supply support for STEVAL-ILD004V1 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, sensors, and automotive ICs with broad industrial and consumer reach.

This evaluation board belongs to ST's STEVAL series of application-specific development platforms, engineered to accelerate design-in of STM8 microcontrollers in cost-sensitive, low-power embedded control applications like lighting, appliance UI, and sensor nodes.

FAQ

What firmware is preloaded on the STEVAL-ILD004V1?

The board ships with factory-programmed demonstration firmware that configures the STM8S103F3 to drive a single LED string using constant-current PWM control, with UART-based brightness adjustment and overtemperature shutdown. Source code is available in the STSW-LED002 software package.

Does STEVAL-ILD004V1 support external MOSFETs or only integrated drivers?

It is designed for external discrete MOSFETs: the board provides gate drive signals (HO/LO) from TIM1's complementary outputs, isolated via optocouplers, and includes current-sense resistor pads and thermal sensor connections - no integrated LED driver IC is used.

Can the board operate from a 12 V input supply?

Yes - the onboard L78L33 linear regulator accepts 7–20 V DC input and delivers stable 3.3 V to the STM8S103F3 and peripherals; the LED power path is separate and supports up to 24 V input via screw terminals, with current set by external sense resistor.

Is SWIM debugging supported out-of-the-box?

Yes - the board features a standard SWIM (Single Wire Interface Module) connector compatible with ST-LINK/V2 and ST-LINK/V2-ISOL, allowing full in-circuit programming and real-time debugging of the STM8S103F3 without soldering or jumper modifications.