Overview
The BLUENRG-232 from STMicroelectronics is an ultra-low power (ULP) Bluetooth Low Energy (BLE) system-on-chip, compliant with the Bluetooth core specification version 5.2. This device is designed for BLE applications, offering exceptional RF performance and extended battery life. It integrates an ARM Cortex-M0 core, allowing the BLE stack to run efficiently, and features on-chip non-volatile Flash memory for easy firmware updates via SPI/UART. The BLUENRG-232 is certified for interoperability with the latest generation of smartphones and other host devices, ensuring robust and secure connections.
Key Specifications
| Parameter | Value |
|---|---|
| Bluetooth Version | Bluetooth 5.2 |
| Operating Supply Voltage | 1.7 to 3.6 V |
| Operating Temperature Range | -40 °C to 105 °C |
| Package Options | VFQFPN 32 (5x5x1.0 mm), VFQFPN 48 (6x6x0.9 mm), WLCSP MSL1 |
| Flash Memory | 256 kB |
| RAM | 24 kB (two 12 kB banks) |
| Communication Interfaces | SPI, UART, I²C |
| GPIOs | 14, 15, or 26 |
| ADC Resolution | 10-bit |
| Output Power | Up to +8 dBm (at antenna connector) |
| RF Link Budget | Up to 96 dB |
| Sleep Current Consumption | Down to 1 µA |
| TX Current Consumption | 8.3 mA (@ -2 dBm, 3.0 V) |
| RX Current Consumption | 6.2 mA (@ sensitivity level, 3.0 V) |
Key Features
- Low-power radio performance with sleep current consumption down to 1 µA
- Integrated DC-DC step-down converter and LDO regulators
- Multi-master to multi-slave communication with up to 8 simultaneous connections
- LE data length extension (up to 700 kbps at application level)
- LE Privacy 1.2 and LE secure connections using elliptic curve Diffie-Hellman (ECDH) key agreement protocol
- Programmable 256 kB Flash and 24 kB RAM with retention
- Standard communication interfaces: SPI, UART, I²C
- 10-bit ADC and multifunction timers, watchdog, RTC, and DMA controller
- Battery voltage and temperature sensors
- Pre-programmed bootloader via UART for easy firmware updates
Applications
The BLUENRG-232 is suitable for a wide range of applications, including industrial, consumer electronics, and IoT devices. It is particularly useful in scenarios requiring low power consumption and secure, reliable Bluetooth connectivity. Examples include smart home devices, wearable technology, and industrial automation systems.
Q & A
- What is the Bluetooth version supported by the BLUENRG-232?
The BLUENRG-232 supports Bluetooth version 5.2. - What is the operating supply voltage range of the BLUENRG-232?
The operating supply voltage range is from 1.7 to 3.6 V. - What are the package options available for the BLUENRG-232?
The package options include VFQFPN 32 (5x5x1.0 mm), VFQFPN 48 (6x6x0.9 mm), and WLCSP MSL1. - How much Flash and RAM memory does the BLUENRG-232 have?
The BLUENRG-232 has 256 kB of Flash memory and 24 kB of RAM (two 12 kB banks). - What communication interfaces are available on the BLUENRG-232?
The device features SPI, UART, and I²C communication interfaces. - What is the maximum output power of the BLUENRG-232?
The maximum output power is up to +8 dBm at the antenna connector. - What is the RF link budget of the BLUENRG-232?
The RF link budget is up to 96 dB. - How low can the sleep current consumption of the BLUENRG-232 go?
The sleep current consumption can go down to 1 µA. - What is the TX current consumption of the BLUENRG-232?
The TX current consumption is 8.3 mA at -2 dBm and 3.0 V. - Does the BLUENRG-232 support secure connections?
Yes, it supports LE secure connections using the elliptic curve Diffie-Hellman (ECDH) key agreement protocol.
