BLUENRG-232

BLUENRG-232: 3.6 V 1 Mbps Bluetooth® Low Energy Wireless System-on-Chip – QFN-32

BLUENRG-232 – Bluetooth® Low Energy SoC with Integrated MCU – STMicroelectronics

The BLUENRG-232 from STMicroelectronics is a highly integrated Bluetooth® Low Energy (BLE) wireless System-on-Chip solution, combining RF transceiver capabilities with an embedded microcontroller. Designed for energy-efficient IoT applications, this obsolete-status component remains available through PCX for legacy designs and inventory replenishment. Featuring Bluetooth 5.0 compliance and ultra-low power consumption, it enables robust wireless connectivity in space-constrained designs.

Key Features

Bluetooth v5.0 Certified: Ensures interoperability with modern BLE devices
Ultra-Low Power Operation: 1.7-3.6V supply voltage with 14.5mA receiving current
Integrated MCU: 256kB Flash + 24kB RAM for embedded processing
High Sensitivity: -88dBm reception for extended range
Compact Footprint: 32-QFN (5x5mm) surface-mount package
Industrial Temperature Range: Operates from -40°C to 105°C

Technical Specifications
This RF transceiver IC operates at 2.4GHz with Gaussian Frequency Shift Keying (GFSK) modulation, achieving 1Mbps data throughput. The integrated ARM® Cortex®-M0 microcontroller manages wireless protocols while providing 15 GPIO pins and multiple serial interfaces (I2C, SPI, UART). With 8dBm maximum transmit power and optimized power management, it delivers excellent link budget performance across industrial environments.

Typical Applications

Wearable health monitors and fitness trackers
Smart home automation sensors and controllers
Industrial IoT condition monitoring systems
Beacon technology and asset tracking solutions
Battery-powered remote control devices

About STMicroelectronics
STMicroelectronics is a globally recognized leader in semiconductor solutions, consistently driving innovation in microcontroller and wireless technologies. With over three decades of industry presence, ST’s components are renowned for their reliability, design flexibility, and compliance with international standards.

The company maintains rigorous quality control processes certified to ISO/TS 16949 standards, ensuring consistent performance across automotive, industrial, and consumer applications. ST’s BlueNRG series represents their commitment to advancing energy-efficient wireless connectivity for next-generation IoT ecosystems.

About Bluetooth Low Energy SoCs
Bluetooth Low Energy System-on-Chip (SoC) devices integrate radio transceivers, protocol stacks, and application processors into single-package solutions. Unlike classic Bluetooth, BLE technology specializes in intermittent data transmission with minimal power consumption – enabling multi-year operation from coin-cell batteries.

These SoCs are fundamental to modern IoT architectures, providing secure device pairing, mesh networking capabilities, and gateway communication. Their compact form factors allow direct embedding into space-constrained designs while handling both wireless communication and application processing tasks without external MCUs.