STMicroelectronics STEVAL-ILL062V1

Overview

STEVAL-ILL062V1 from STMicroelectronics is an evaluation board demonstrating high-brightness LED array driving using the STP16CPC26 16-channel constant-current sink driver and STM8S microcontroller, supporting pre-configured visual patterns (rolling text, wave, dot sequence) with adjustable brightness and speed via potentiometer, powered by 6–24 V DC, and featuring 32 white LEDs.

For engineers reviewing the STEVAL-ILL062V1 datasheet, STEVAL-ILL062V1 pinout, STEVAL-ILL062V1 application, or STEVAL-ILL062V1 equivalent, this board serves as a ready-to-run reference for LED signage, industrial status indication, and embedded lighting control prototyping with SPI-driven LED sequencing and on-board DC-DC power conversion.

Technical Context

The board implements a complete LED driver system where the STM8S microcontroller configures the STP16CPC26 via SPI to generate time-multiplexed output patterns; brightness is controlled by PWM duty cycle and current-setting resistor R-EXT, while pattern speed is adjusted via software timing loops.

Power is conditioned by the L7981D industrial-grade DC-DC converter delivering stable 4.5 V to the microcontroller and LED driver logic; the STP16CPC26 provides 16 individually controllable, constant-current (max 100 mA per channel) sink outputs with thermal shutdown and open-load detection.

Key Specifications

Availability

STEVAL-ILL062V1 is available at Aetrix Electronics and suitable for LED signage prototyping, industrial HMI status lighting, and embedded visual feedback systems requiring stable component supply and rapid functional validation.

Supply support for STEVAL-ILL062V1 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, designing and manufacturing microcontrollers, power ICs, sensors, and analog components for industrial, automotive, and consumer applications.

This board belongs to ST's STEVAL (ST Evaluation) series, developed specifically to accelerate design-in of ST's LED driver and MCU solutions in visual display and human-machine interface applications.

FAQ

What firmware is preloaded on the STM8S microcontroller?

The STM8S comes pre-programmed with demonstration firmware that executes rolling text, wave effect, and dot-sequence patterns. Source code is available in ST's official application note AN4322 and can be reprogrammed via the SWIM connector using ST Visual Develop or STVP tools.

Can the LED matrix be expanded beyond 32 LEDs?

Yes - the board uses two STP16CPC26 drivers (each controlling 16 LEDs), and its SPI interface and PCB layout support daisy-chaining additional STP16CPC26 devices. Expansion requires modifying firmware to address extra channels and adjusting current-limiting resistors per channel.

Does the board support external pattern triggering or synchronization?

No dedicated sync input is provided, but the STM8S GPIO pins (PA1, PA2, PB0–PB5) are accessible via test points and jumpers, allowing custom firmware to add external trigger inputs (e.g., rising-edge pulse on PB0) to advance or reset patterns.

Is the L7981D DC-DC converter configurable for different output voltages?

No - the L7981D is fixed to deliver 4.5 V, set by onboard resistor divider (R5/R6) and feedback network. Output voltage cannot be adjusted without hardware modification; the design prioritizes stability and noise immunity for LED driver logic and MCU operation.