STMicroelectronics X-NUCLEO-53L8A1

Overview

X-NUCLEO-53L8A1 from STMicroelectronics is an Arduino® UNO R3-compatible expansion board for STM32 Nucleo development platforms, integrating the VL53L8CA Time-of-Flight sensor for multizone ranging. It delivers 8×8 zone detection, histogram-based ranging up to 4 m, AI-enabling capability via VL53L8CH firmware compatibility, and supports both SPI and I²C interfaces. Used in proximity-aware wearable interfaces and AR/VR gesture control systems.

For engineers reviewing the X-NUCLEO-53L8A1 datasheet, X-NUCLEO-53L8A1 pinout, X-NUCLEO-53L8A1 application, or X-NUCLEO-53L8A1 equivalent, this page provides verified interface mapping, software-ready configuration details, dual-mode (SPI/I²C) signal routing, power rail partitioning (3.3 V AVDD / 1.8 V IOVDD / CORE_1V8), and stackable Arduino R3 mechanical compatibility for multi-sensor prototyping.

Technical Context

The board implements a dual-voltage power architecture: a 3.3 V LDO (U1) supplies AVDD to the VL53L8CA sensor, while a separate 1.8 V LDO (U2) powers IOVDD and CORE_1V8 domains. Level shifters enable bidirectional signal translation between STM32 Nucleo logic levels and sensor I/O requirements.

Interface selection is hardware-configurable via jumper J1: pins 1–2 enable I²C mode (MCLK/SCL, MOSI/SDA, MISO, NCS), while pins 2–3 select SPI mode (MCLK_SCL, MOSI_SDA, MISO, NCS, LPn, GPIO1, GPIO2). GPIO1 serves as open-drain interrupt output; GPIO2 supports SYNC input or open-drain output.

Key Specifications

Availability

X-NUCLEO-53L8A1 is available at Aetrix Electronics and suitable for wearable proximity sensing, AR/VR spatial interaction, drone obstacle avoidance, and industrial presence detection requiring stable component supply during prototyping and low-volume production phases.

Supply support for X-NUCLEO-53L8A1 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, designing and manufacturing microcontrollers, sensors, power management ICs, and analog devices for industrial, automotive, and consumer applications.

X-NUCLEO-53L8A1 belongs to ST's STM32 Nucleo ecosystem expansion board family, engineered to accelerate evaluation and integration of VL53L8-series Time-of-Flight sensors into embedded vision and spatial awareness applications.

FAQ

Is X-NUCLEO-53L8A1 compatible with all STM32 Nucleo boards?

Yes - it is mechanically and electrically compatible with any STM32 Nucleo-64 or Nucleo-144 board featuring Arduino® UNO R3 connectors (e.g., NUCLEO-F401RE, NUCLEO-L476RG). Signal mapping follows ST's standardized CN5/CN6 pinout definitions, and power is drawn directly from the Nucleo board's 3.3 V and 5 V rails.

What is the role of the SPI_I2C_N jumper (J1)?

J1 selects the communication protocol: position 1–2 configures the board for I²C mode (using MCLK/SCL, MOSI/SDA, MISO, NCS), while position 2–3 enables SPI mode (activating MCLK_SCL, MOSI_SDA, MISO, NCS, LPn, GPIO1, GPIO2). This hardware switch ensures deterministic interface behavior without software reconfiguration.

Can the VL53L8CA sensor on this board be replaced with VL53L8CX or VL53L8CH?

No - the X-NUCLEO-53L8A1 integrates the non-commercial VL53L8CA evaluation sensor only. VL53L8CX and VL53L8CH are orderable variants with different qualification status and firmware features; they are not socket-compatible or drop-in replacements on this board due to package and calibration differences.

Does the board support external display output?

Yes - it includes an optional SSD1306 I²C OLED display connector (J7/J8/J9), documented in ST Application Note AN5922. Example code and GUI integration for real-time ranging visualization are provided in X-CUBE-TOF1 v3.0.0 and later releases.