STMicroelectronics — BlueNRG-LP Low-Power Wireless SoC
STMicroelectronics

Bluetooth SoC offers ultra low-power wireless connectivity

BlueNRG-LP from STMicroelectronics combines Bluetooth Low Energy radio with an Arm Cortex-M0+ core in a single chip

STMicroelectronics’ BlueNRG-LP is a programmable Bluetooth® Low Energy (LE) system-on-chip (SoC) which operates at the very low power levels required to provide long run-times in wearable devices and other battery-operated products.

 

This wireless Bluetooth device can operate on a peak current of 3.4 mA when receiving, a peak Transmit current of 4.3 mA, just 0.6 µA in deep stop mode, and 10 nA in shut-down mode. It can be programmed to produce output power up to +8 dBm.

 

The BlueNRG-LP is ideal for devices which can take advantage of the increased data rate and range provided by version 5.2 of the Bluetooth LE specification. The BlueNRG-LP supports v5.2 features such as a 2 Mbits/s data rate, long-range mode, advertising extensions, channel selection algorithm #2, and GATT caching.

 

The SoC has an embedded 2.4 GHz RF radio, a 32-bit Arm® Cortex®-M0+ core which can operate at up to 64 MHz, and a BlueNRG core accelerator for time-critical operations. The SoC also integrates a range of peripherals, and embeds a 12-bit ADC with a 16-bit decimation filter. This enables measurement of up to eight external sources via DMA channels and up to three internal sources, including battery monitoring and a temperature sensor. An embedded RF balun, dc-dc converter, and capacitor-less crystal help to minimize the cost of the host system bill-of-materials.

 

The BlueNRG-LP enables point-to-point connectivity between devices as well as Bluetooth mesh networking for large device networks. The BlueNRG-LP can also be used for 2.4 GHz proprietary radio communication, making it suitable for ultra low-latency applications.

Features BlueNRG-LP

  • Bluetooth 5.2-certified protocol stack
  • Up to 128 concurrent connections
  • Receive sensitivity:
    • -97 dBm at 1 Mbit/s
    • -104 dBm at 125 kbits/s
  • 256 kbytes Flash memory
  • 32/64 kbytes RAM
  • Supply-voltage range: 1.7 V to 3.6 V
  • Product longevity guaranteed for 10 years
  • Operating-temperature range options:
    • -40°C to 85°C
    • -40°C to 105°C
  • Available in three packages:
    • QFN48 with 32 I/Os 6 mm x 6 mm x 0.9 mm
    • QFN32 with 20 I/Os 5 mm x 5 mm x 0.9 mm
    • WLCSP49 with 29 I/Os 3.14 mm x 3.14 mm x 0.4 mm

Applications

  • Asset tracking and beacons
  • Smart tools and appliances
  • Lighting
  • Building automation
  • Personal electronics
  • People and animal tracking
  • Healthcare
  • Wearable devices

Development Kits

Kit Part Numbers:
STEVAL-IDB011V2 (based on QFN48 BlueNRG-355MC)
STEVAL-IDB010V1 (based on WLCSP49 BlueNRG-355VC)

The STEVAL-IDB011V2 and STEVAL-IDB010V1 development kits consist of a Bluetooth® LE evaluation board based on the BlueNRG-LP SoC. It includes a range of MEMS sensors, a digital MEMS microphone, and various interface buttons and LEDs.

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