STMicroelectronics – Bluetooth® low energy wireless system-on-chip

BlueNRG-2

The BlueNRG-2 is a very low power Bluetooth low energy (BLE) single-mode system-on-chip, that enabling the usage of the embedded Cortex M0 for running the user application code.

The BlueNRG-2 offers the same excellent RF performance of the BlueNRG radio, and the integrated high efficiency DC/DC converter keeps the same ultra-low power characteristics, but the BlueNRG-2 improves the BlueNRG sleep mode current consumption allowing a further increase in the battery lifetime of the applications.

The BlueNRG-2 includes 256 KB of programming Flash memory, 24 KB of static RAM memory with retention (two 12 KB banks) and SPI, UART, I²C standard communication interface peripherals. It also features multifunction timers, watchdog, RTC and DMA controller.

Key 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 1.7 to 3.6 V
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 256 KB Flash
24 KB RAM with retention (two 12 KB banks)
1 x UART interface
1 x SPI interface
2 x I²C interface
14, 15 or 26 GPIOs
2 x multifunction timer
10-bit ADC
Watchdog & RTC
DMA controller
PDM stream processor
16 or 32 MHz crystal oscillator
32 kHz crystal oscillator
32 kHz ring oscillator
Battery voltage monitor and temperature sensor
Up to +8 dBm available output power (at antenna connector)
Excellent RF link budget (up to 96 dB)
Accurate RSSI to allow power control
8.3 mA TX current (@ -2 dBm, 3.0 V)
Down to 1 µA 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