STMicroelectronics X-NUCLEO-IDB05A1

Overview

X-NUCLEO-IDB05A1 from STMicroelectronics is a Bluetooth Low Energy expansion board based on the FCC- and IC-certified SPBTLE-RF module (BlueNRG-MS), designed to add BLE connectivity to STM32 Nucleo development platforms via SPI interface, supporting Bluetooth 4.1, integrated BALF-NRG-01D3 balun, and chip antenna.

For engineers reviewing the X-NUCLEO-IDB05A1 datasheet, X-NUCLEO-IDB05A1 pinout, X-NUCLEO-IDB05A1 application, or X-NUCLEO-IDB05A1 equivalent, key selection considerations include SPI interface configuration flexibility, regulatory certification status (FCC ID S9NSPBTLERF / IC 8976C-SPBTLERF), Arduino UNO R3 and ST Morpho connector compatibility, and BlueNRG-MS firmware integration with STM32Cube.

Technical Context

The board implements a complete BLE network processor solution using the BlueNRG-MS SoC, which integrates RF transceiver, baseband processor, and embedded BLE stack. It interfaces with host STM32 MCUs exclusively through hardware SPI, with configurable CS, IRQ, and clock signals via onboard resistor selection.

Regulatory compliance is achieved via pre-certified SPBTLE-RF module - eliminating need for end-product RF re-certification in FCC and IC jurisdictions. The board supports cascading with other X-NUCLEO expansions and provides direct access to EEPROM for user configuration storage.

Key Specifications

Availability

X-NUCLEO-IDB05A1 is available at Aetrix Electronics and suitable for BLE prototyping, IoT sensor node development, and industrial wireless gateway evaluation requiring stable component supply, regulatory-ready RF modules, and STM32 ecosystem interoperability.

Supply support for X-NUCLEO-IDB05A1 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 specializing in microcontrollers, analog ICs, power management, and MEMS sensors, with broad industrial, automotive, and consumer market presence.

X-NUCLEO-IDB05A1 belongs to ST's Nucleo expansion board product line, engineered to accelerate wireless connectivity adoption in STM32-based development by delivering pre-validated, certified, and firmware-integrated hardware modules.

FAQ

Does X-NUCLEO-IDB05A1 require external antenna tuning?

No. The board uses an integrated chip antenna and BALF-NRG-01D3 balun, both factory-matched to the BlueNRG-MS RF port. No impedance matching components or antenna calibration are needed for standard operation within FCC/IC limits.

Can X-NUCLEO-IDB05A1 be used with non-STM32 hosts?

Yes, but only with SPI-capable microcontrollers that support the BlueNRG-MS command set and timing requirements. ST-provided firmware libraries and examples are STM32Cube-optimized; third-party host integration requires full BlueNRG-MS AT command or SPI driver implementation.

What is the role of the onboard EEPROM?

The EEPROM stores device-specific parameters such as BD_ADDR, custom service UUIDs, and persistent connection settings. It is accessed via I²C by the BlueNRG-MS during initialization and supports field-updatable configuration without reflashing the module firmware.

Is X-NUCLEO-IDB05A1 compatible with STM32CubeMX-generated projects?

Yes. ST provides dedicated middleware drivers and HAL-compatible examples in STM32Cube firmware packages (e.g., STM32CubeWB, STM32CubeF4). Pin mapping and SPI initialization are auto-configurable in CubeMX when selecting the X-NUCLEO-IDB05A1 expansion board profile.