The BlueNRG-2 is a very low power Bluetooth low energy (BLE) single-mode system-on-chip, compliant with Bluetooth specification. The BlueNRG-2 extends the features of award-winning BlueNRG network processor, enabling the usage of the embedded Cortex M0 for running the user application code. 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. An ADC is available for interfacing with analog sensors, and for reading the measurement of the integrated battery monitor. A digital filter is available for processing a PDM stream. 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.

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