The BlueNRG-LP is an ultra-low power programmable Bluetooth^® Low Energy wireless SoC solution. It embeds STMicroelectronics’s state-of-art 2.4 GHz RF radio IPs combining unparalleled performance with extremely long-battery lifetime. It is compliant with Bluetooth^® Low Energy SIG core specification version 5.2 addressing point-to-point connectivity and Bluetooth Mesh networking and allows large-scale device networks to be established in a reliable way. The BlueNRG-LP is also suitable for 2.4 GHz proprietary radio wireless communication to address ultra-low latency applications.

The BlueNRG-LP embeds a Cortex^®-M0+ microcontroller that can operate up to 64 MHz and also the BlueNRG core coprocessor (DMA based) for Bluetooth Low Energy timing critical operations.

The main Bluetooth Low Energy 5.2 specification supported features are:

2 Mbps data rate, long range (Coded PHY), advertising extensions, channel selection algorithm #2, GATT caching, hardware support for simultaneous connection, master/slave and multiple roles simultaneously, extended packet length support.

In addition, the BlueNRG-LP provides enhanced security hardware support by dedicated hardware functions:

True random number generator (RNG), encryption AES maximum 128-bit security co-processor, public key accelerator (PKA), CRC calculation unit, 64-bit unique ID, Flash memory read and write protection.

The BlueNRG-LP can be configured to support standalone or network processor applications. In the first configuration, the BlueNRG-LP operates as single device in the application for managing both the application code and the Bluetooth Low Energy stack.

The BlueNRG-LP embeds high-speed and flexible memory types:

Flash memory of 256 Kbytes, RAM memory of 64 Kbytes, one-time-programmable (OTP) memory area of 1 Kbytes, ROM memory of 7 Kbytes (ST reserved area).

Direct data transfer between memory and peripherals and from memory-to-memory is supported by eight DMA channels with a full flexible channel mapping by the DMAMUX peripheral.

The BlueNRG-LP embeds a 12-bit ADC, allowing measurements of up to eight external sources and up to three internal sources, including battery monitoring and a temperature sensor.

The BlueNRG-LP has a low-power RTC and one advanced 16-bit timer.

The BlueNRG-LP features standard and advanced communication interfaces:

1x SPI, 2x SPI/I2S, 1x LPUART, 1x USART supporting ISO 7816 (smartcard mode), IrDA and Modbus mode, 2x I²C supporting SMBus/PMBus, 1x channel PDM.

The BlueNRG-LP operates in the -40 to +105 °C temperature range from a 1.7 V to 3.6 V power supply. A comprehensive set of power-saving modes enables the design of low-power applications.

The BlueNRG-LP integrates a high efficiency SMPS step-down converter and an integrated PDR circuitry with a fixed threshold that generates a device reset when the VDD drops under 1.65 V.

The BlueNRG-LP comes in different package versions supporting up to:

32 I/Os for the QFN48 package, 20 I/Os for the QFN32 package, 30 I/Os for the WCSP49 package.

• Bluetooth^® Low Energy system-on-chip supporting Bluetooth 5.2 specifications
  • 2 Mbps data rate
  • Long range (Coded PHY)
  • Advertising extensions
  • Channel selection algorithm #2
  • GATT caching
  • LE Ping procedure
  • Periodic advertising and periodic advertising sync transfer
  • LE L2CAP connection-oriented channel
  • LE power control and path loss monitoring
• Radio
  • RX sensitivity level: -97 dBm @ 1 Mbps, -104 dBm @ 125 kbps (long range)
  • Programmable output power up to +8 dBm (at antenna connector)
  • Data rate supported: 2 Mbps, 1 Mbps, 500 kbps and 125 kbps
  • 128 physical connections
  • Integrated balun
  • Support for external PA
  • BlueNRG core coprocessor (DMA based) for Bluetooth Low Energy timing critical operation
  • 2.4 GHz proprietary radio driver
  • Suitable for systems requiring compliance with the following radio frequency regulations: ETSI EN 300 328, EN 300 440, FCC CFR47 part 15, ARIB STD-T66
• Available integrated passive device (IPD) companion chip for optimized matching and filtering
• Ultra-low power radio performance
  • 10 nA in SHUTDOWN mode (1.8 V)
  • 0.6 µA in DEEPSTOP mode (with external LSE and BLE wake-up sources, 1.8 V)
  • 0.9 µA in DEEPSTOP mode (with internal LSI and BLE wake-up sources, 1.8 V)
  • 4.3 mA peak current in TX (@ 0 dBm, 3.3 V)
  • 3.4 mA peak current in RX (@ sensitivity level, 3.3V)
• High performance and ultra-low power Cortex-M0+ 32-bit, running up to 64 MHz
• Dynamic current consumption: 18 µA/MHz
• Operating supply voltage: from 1.7 to 3.6 V
• -40 ºC to 105 ºC temperature range
• Supply and reset management
  • High efficiency embedded SMPS step-down converter with intelligent bypass mode
  • Ultra-low power power-on-reset (POR) and power-down-reset (PDR)
  • Programmable voltage detector (PVD)
• Clock sources
  • Fail safe 32 MHz crystal oscillator with integrated trimming capacitors
  • 32 kHz crystal oscillator
  • Internal low-power 32 kHz RO
• On-chip non-volatile Flash memory of 256 Kbytes
• On-chip RAM of 64 Kbytes or 32 Kbytes
• One-time-programmable (OTP) memory area of 1 Kbyte
• Embedded UART bootloader
• Ultra-low power modes with or without timer and RAM retention
• Quadrature decoder
• Enhanced security mechanisms such as:
  • Flash read/write protection
  • SWD disabling
  • Secure bootloader
• Security features
  • True random number generator (RNG)
  • Hardware encryption AES maximum 128-bit security co-processor
  • HW public key accelerator (PKA)
  • CRC calculation unit
  • 64-bit unique ID
• System peripherals
  • 1x DMA controller with 8 channels supporting ADC, SPI, I2C, USART and LPUART
  • 1x SPI
  • 2x SPI/I2S
  • 2x I²C (SMBus/PMBus)
  • 1x PDM (digital microphone interface)
  • 1x LPUART
  • 1x USART (ISO 7816 smartcard mode, IrDA, SPI Master and Modbus)
  • 1x independent WDG
  • 1x real time clock (RTC)
  • 1x independent SysTick
  • 1x 16-bit, 6 channel advanced timer
• Up to 32 fast I/Os
  • 28 of them with wake-up capability
  • 31 of them 5 V tolerant
• Analog peripherals
  • 12-bit ADC with 8 input channels, up to 16 bits with a decimation filter
  • Battery monitoring
  • Analog watchdog
  • Analog Mic I/F with PGA
• Development support
  • Serial wire debug (SWD)
  • 4 breakpoints and 2 watchpoints
• All packages are ECOPACK2 compliant