STMicroelectronics BlueNRG-2 BLE Wireless System-on-Chip

STMicroelectronics BlueNRG-2 BLUETOOTH® Low Energy Wireless System-on-Chip offers the same RF performance of the BlueNRG radio, but improves sleep mode current consumption for longer application battery lifetime. The BlueNRG-2 extends the features of the award-winning BlueNRG network processor, enabling the usage of the embedded Arm® Cortex® M0 for running the user application code.

The SoC includes 256KB of programming Flash memory, 24KB of static RAM memory with retention (two 12KB banks) and SPI, UART, I2C standard communication interface peripherals. The BlueNRG-2 also features multifunction timers, watchdog, RTC, and DMA controller. The chip has an integrated high-efficiency DC/DC converter for ultra-low power characteristics.

Bluetooth mesh networking is an emerging technology designed to ensure network connectivity over large areas using the Bluetooth Low Energy protocol, going beyond the simple one-to-one and one-to-many connections. ST's Mesh SDK (STSW-BNRG-Mesh) simplifies Bluetooth Low Energy adoption, reduces development costs, and accelerates time to market. It offers easy-to-use networking APIs for developers based on a certified Mesh Profile Library and Bluetooth LE stack. Mobile apps for Android and iOS are available.

The ST BlueNRG-1 devices also support MESH Networking.

The Bluetooth 5.0 qualification ensures interoperability with the latest mobiles and tablets as well as backward compatibility with older products. The BlueNRG-2 comes with a dedicated evaluation kit (STEVAL-IDB008V1), new software development kit (SDK), and a BlueNRG Navigator graphical user interface (GUI).

Features

Bluetooth low energy single mode system-on-chip compliant with Bluetooth 4.2 specification:
- Master, slave, and multiple simultaneous roles
- LE Data Packet Length Extension
Operating supply voltage: from 1.7V to 3.6V
Integrated linear regulator and DC-DC step-down converter
Operating temperature range: -40°C to 105°C
High performance, ultra-low power Cortex-M0 32-bit based architecture core
Programmable 256KB Flash
24KB RAM with retention (two 12KB banks)
UART interface
SPI interface
2x I²C interface
14, 15, or 26 GPIOs
2x multifunction timer
10-bit ADC
Watchdog & RTC

DMA controller
PDM stream processor
16MHz or 32MHz crystal oscillator
32kHz crystal oscillator
32kHz ring oscillator
Battery voltage monitor and temperature sensor
Up to +8dBm available output power (antenna connector)
Excellent RF link budget (up to 96dB)
Accurate RSSI to allow power control
8.3mA TX current (@ -2dBm, 3.0V)
Down to 1μA current consumption with active BLE stack (sleep mode)
Suitable for building applications compliant with the following radio frequency regulations: ETSI EN 300 328, EN 300 440,FCC CFR47 Part 15, ARIB STD-T66
Pre-programmed bootloader via UART
QFN32, QFN48, and WCSP34 package options