Overview
The BLUENRG-248 is a Bluetooth Low Energy (BLE) system-on-chip developed by STMicroelectronics. It is part of the BlueNRG-2 series, which is known for its very low power consumption and compliance with Bluetooth v5.2 specifications. This SoC integrates an ARM Cortex-M0 32-bit core, allowing it to run user application code efficiently. The BlueNRG-248 is designed to support various roles such as master, slave, and multiple simultaneous roles, making it versatile for a wide range of applications. It features an integrated high-efficiency DC-DC converter, which contributes to its ultra-low power characteristics, enhancing battery life in devices.
Key Specifications
| Attribute | Specification |
|---|---|
| Data Rate | 1 Mbps |
| Max Power Consumption | 28.8 mA |
| Certified | Yes |
| Sensitivity | -88 dBm |
| Frequency Range | 2.4 GHz to 2.4835 GHz |
| Supply Voltage | 1.7 V to 3.6 V |
| Operating Temperature Range | -40°C to +105°C |
| Storage Temperature Range | -40°C to +125°C |
| No of Terminals | 48 |
| Moisture Sensitivity Level | 3 |
| Package Style | QFN-48 |
| Mounting Method | Surface Mount |
| Flash Memory | 256 kB |
| RAM | 24 kB with retention (two 12 kB banks) |
| Interfaces | UART, SPI, 2 x I²C |
| GPIOs | 14, 15 or 26 |
| Timers | 2 x multifunction timers |
| ADC | 10-bit ADC with battery voltage and temperature sensors |
| Watchdog and RTC | Yes |
| DMA Controller | Yes |
| PDM Stream Processor | Yes |
| Crystal Oscillators | 16 or 32 MHz, 32 kHz |
| Output Power | Up to +8 dBm (at antenna connector) |
| RF Link Budget | Up to 96 dB |
Key Features
- Bluetooth Low Energy Compliance: Certified to Bluetooth v5.2 specifications, supporting master, slave, and multiple simultaneous roles.
- Ultra-Low Power Consumption: Features an integrated high-efficiency DC-DC converter and low power Cortex-M0 32-bit core, reducing power consumption to as low as 1 µA in sleep mode.
- Programmable Memory: Includes 256 kB of programmable Flash memory and 24 kB of static RAM with retention.
- Communication Interfaces: Supports UART, SPI, and two I²C interfaces.
- Peripherals: Includes multifunction timers, watchdog, RTC, DMA controller, and a 10-bit ADC with battery voltage and temperature sensors.
- RF Performance: Offers excellent RF link budget (up to 96 dB) and accurate RSSI for power control.
- Package Options: Available in QFN32, QFN48, and WCSP34 package styles.
- Regulatory Compliance: Compliant with ETSI EN 300 328, EN 300 440, FCC CFR47 Part 15, and ARIB STD-T66 radio frequency regulations.
Applications
- Watches and Wearables: Ideal for smartwatches and fitness trackers due to its low power consumption and compact design.
- Fitness, Wellness, and Sports: Suitable for fitness bands, heart rate monitors, and other sports-related devices.
- Consumer Medical Devices: Used in medical devices such as glucose monitors and other health-related wearables.
- Security and Proximity: Applied in security systems, proximity sensors, and access control devices.
- Remote Control: Utilized in remote control applications for various devices.
- Home and Industrial Automation: Used in smart home devices and industrial automation systems.
- Assisted Living: Implemented in devices that support assisted living, such as fall detectors and emergency call systems.
- Mobile Phone Peripherals: Suitable for Bluetooth-enabled peripherals for mobile phones.
- Lighting and PC Peripherals: Used in smart lighting systems and PC peripherals like keyboards and mice.
Q & A
- What is the BLUENRG-248?
The BLUENRG-248 is a Bluetooth Low Energy (BLE) system-on-chip developed by STMicroelectronics, part of the BlueNRG-2 series.
- What Bluetooth version is the BLUENRG-248 certified to?
The BLUENRG-248 is certified to Bluetooth v5.2 specifications.
- What are the key roles supported by the BLUENRG-248?
The BLUENRG-248 supports master, slave, and multiple simultaneous roles.
- What is the operating supply voltage range of the BLUENRG-248?
The operating supply voltage range is from 1.7 V to 3.6 V.
- What are the key peripherals included in the BLUENRG-248?
The BLUENRG-248 includes UART, SPI, I²C interfaces, multifunction timers, watchdog, RTC, DMA controller, and a 10-bit ADC.
- What is the maximum output power of the BLUENRG-248?
The maximum output power is up to +8 dBm at the antenna connector.
- What is the RF link budget of the BLUENRG-248?
The RF link budget is up to 96 dB.
- Is the BLUENRG-248 compliant with any specific radio frequency regulations?
Yes, it is compliant with ETSI EN 300 328, EN 300 440, FCC CFR47 Part 15, and ARIB STD-T66 regulations.
- What are some typical applications of the BLUENRG-248?
Typical applications include watches, fitness trackers, consumer medical devices, security systems, remote controls, home and industrial automation, assisted living devices, mobile phone peripherals, and smart lighting systems.
- What is the power consumption in sleep mode for the BLUENRG-248?
The power consumption in sleep mode can be as low as 1 µA.
