Overview
The BlueNRG-234N from STMicroelectronics is an ultra-low power (ULP) network coprocessor solution designed for Bluetooth® low energy applications. It integrates STMicroelectronics’s state-of-the-art RF radio IPs, combining unparalleled performance with extremely long battery lifetime. The device is fully compliant with the Bluetooth core specification version 5.2 and supports enhanced features such as state-of-the-art security, privacy, and extended packet length for faster data transfer up to 700 kbps at the application level. The BlueNRG-234N is Bluetooth® 5.2 certified, ensuring interoperability with the latest generation of smartphones and other host devices.
Key Specifications
| Parameter | Value |
|---|---|
| Operating Temperature (°C) | -40 to 105 |
| Sleep Current Consumption | Down to 900 nA |
| TX Current Consumption | 6.8 mA (@ -2 dBm, 3.0 V) |
| RX Current Consumption | 6.2 mA (@ sensitivity level, 3.0 V) |
| Programmable Output Power Level | Up to +8 dBm (@ antenna connector) |
| RF Link Budget | Up to 96 dB |
| Package Type | 2.7mm x 2.6mm wafer-level chip-scale package (WCSP34) |
| GPIOs | 14 GPIOs (WCSP34) |
| Bluetooth Certification | Bluetooth® 5.2 certified |
| Simultaneous Connections | Up to 8 simultaneous connections handled |
Key Features
- Low-power radio performance with sleep current consumption down to 900 nA
- Integrated DC-DC step-down converter and LDO regulators for efficient power management
- Bluetooth® 5.2 certified with support for multi-master to multi-slave communication and up to 8 simultaneous connections
- LE data length extension for faster data transfer up to 700 kbps at the application level
- Over-the-air firmware update is 2.5 times faster
- LE Privacy 1.2 for enhanced privacy by frequently changing the address without host involvement
- LE secure connections using the elliptic curve Diffie-Hellman (ECDH) key agreement protocol
- Embedded ARM Cortex-M0 core with on-chip non-volatile Flash memory for the BLE stack
- Pre-programmed bootloader supporting UART protocol with automatic baud rate detection
- Unique six-byte serial number stored on the device
Applications
- Watches and wearable devices
- Fitness, wellness, and sports equipment
- Consumer medical devices
- Security and proximity applications
- Remote control devices
- Home and industrial automation systems
- Assisted living devices
- Mobile phone peripherals
- Lighting systems
- PC peripherals
Q & A
- What is the BlueNRG-234N?
The BlueNRG-234N is an ultra-low power network coprocessor solution for Bluetooth® low energy applications from STMicroelectronics.
- What Bluetooth version is the BlueNRG-234N compliant with?
The BlueNRG-234N is fully compliant with Bluetooth core specification version 5.2.
- What are the key power consumption specifications of the BlueNRG-234N?
The device has a sleep current consumption down to 900 nA, TX current consumption of 6.8 mA (@ -2 dBm, 3.0 V), and RX current consumption of 6.2 mA (@ sensitivity level, 3.0 V).
- What is the maximum data transfer rate supported by the BlueNRG-234N?
The BlueNRG-234N supports data transfer rates up to 700 kbps at the application level.
- How many simultaneous connections can the BlueNRG-234N handle?
The device can handle up to 8 simultaneous connections.
- What security features does the BlueNRG-234N support?
The BlueNRG-234N supports LE secure connections using the elliptic curve Diffie-Hellman (ECDH) key agreement protocol and LE Privacy 1.2 for enhanced privacy.
- What is the package type of the BlueNRG-234N?
The BlueNRG-234N is available in a 2.7mm x 2.6mm wafer-level chip-scale package (WCSP34).
- How can the firmware of the BlueNRG-234N be updated?
The firmware can be updated over-the-air using SPI/UART interfaces and dedicated STMicroelectronics software tools.
- Does the BlueNRG-234N have a built-in bootloader?
Yes, the BlueNRG-234N has a pre-programmed bootloader supporting UART protocol with automatic baud rate detection.
- What development tools are available for the BlueNRG-234N?
Developers can use the STM32 online development environment, including the STM32CubeMX GUI plug-in, to develop projects with the BlueNRG-234N.
