STMicroelectronics STEVAL-LLL005V1

Overview

STEVAL-LLL005V1 from STMicroelectronics is an LED driver evaluation board built around the STP16CPC26 16-bit constant-current sink driver, STM32F030C8T6 ARM Cortex-M0 MCU (64 KB Flash, 48 MHz), and SPBTLE-RF Bluetooth Smart v4.1 module. It drives a 6×10 (60-LED) matrix with individual LED control, row-wise scanning, brightness/speed/blink-rate preconfigured demos, and Android app control via USB-C or DC jack power.

For engineers reviewing the STEVAL-LLL005V1 datasheet, STEVAL-LLL005V1 pinout, STEVAL-LLL005V1 application, or STEVAL-LLL005V1 equivalent, this board enables rapid validation of BLE-enabled LED matrix control architectures, low-voltage constant-current driving, and embedded firmware integration for smart lighting interfaces.

Technical Context

The board implements a hierarchical control architecture: the STM32F030C8T6 executes firmware to generate SPI commands for the STP16CPC26, which sinks up to 100 mA per channel with adjustable current via external R-EXT resistor. Row scanning is managed in firmware with precise timing to avoid flicker.

Bluetooth communication uses SPI interface between MCU and SPBTLE-RF (v4.1, 2.4 GHz ISM band), supporting GATT-based profile for remote parameter updates. Power is flexibly supplied via 5 V USB-C (VBUS) or 4.5–5.5 V DC jack, regulated by L7981 step-down controller and LDK120M33R LDO to generate stable 3.3 V for digital logic and BLE.

Key Specifications

Availability

STEVAL-LLL005V1 is available at Aetrix Electronics and suitable for LED matrix prototyping, BLE-connected lighting demos, and embedded firmware development requiring stable component supply and reference design traceability.

Supply support for STEVAL-LLL005V1 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, analog ICs, power devices, sensors, and MEMS.

This board belongs to ST's STEVAL (ST Evaluation) series-engineered to accelerate proof-of-concept for human-machine interface (HMI), smart lighting, and BLE-peripheral subsystems using ST's core analog and MCU portfolio.

FAQ

Does STEVAL-LLL005V1 support custom firmware upload?

Yes. The board features a standard 10-pin SWD programming connector (J5) compatible with ST-LINK/V2 or ST-LINK/V3 debuggers. The STM32F030C8T6 is fully reprogrammable via SWD, and ST provides firmware examples and HAL drivers in STM32CubeF0 for modifying LED patterns, BLE GATT services, or scan timing.

Can multiple STEVAL-LLL005V1 boards be synchronized?

Yes. The board includes a daisy-chain stacking connector (J4) with dedicated STP_CLK, STP_SDI, STP_SDO, and STP_OE signals routed for cascading STP16CPC26 drivers. Firmware on the master MCU can propagate scan data across chained boards, enabling coordinated control of extended LED matrices beyond 60 LEDs.

What Android app is provided for this board?

ST provides the "BlueNRG" Android app (available on Google Play), configured to communicate with the board's preloaded BLE firmware. It exposes sliders and toggles for real-time adjustment of brightness, animation speed, and blink rate-mapped directly to SPI register writes targeting the STP16CPC26 and STM32F030 peripherals.

Is external current limiting required for the LEDs?

No. The STP16CPC26 integrates constant-current regulation per channel; only the external R-EXT resistor (10 kΩ fitted) sets the full-scale current (≈20 mA per LED at VDD = 4.5 V). No series resistors are needed at the LED anodes-the board's matrix wiring assumes common-anode configuration with cathodes driven by the sink outputs.