Overview
The STMicroelectronics BLUENRG-345AC is a highly advanced Bluetooth Low Energy (BLE) system-on-chip (SoC) designed for ultra-low power wireless applications. It is part of the BlueNRG-LP series, which combines state-of-the-art 2.4 GHz RF radio IPs with a Cortex-M0+ microcontroller, enabling unparalleled performance and long battery life. The BLUENRG-345AC supports Bluetooth 5.2 specifications, including features like 2 Mbps data rate, long range (Coded PHY), advertising extensions, and GATT caching. This SoC is ideal for applications requiring point-to-point connectivity and Bluetooth Mesh networking, making it suitable for large-scale device networks and ultra-low latency applications.
Key Specifications
| Attribute | Specification |
|---|---|
| Data Rate | 2 Mbps, 1 Mbps, 500 kbps, 125 kbps |
| Bluetooth Version | 5.2 |
| Bluetooth Class | Class 1 |
| Maximum Output Power | 8 dBm |
| Receiver Sensitivity | -97 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 | 32 |
| Package Style | QFN-32 |
| Mounting Method | Surface Mount |
| Moisture Sensitivity Level | 3 |
Key Features
- Ultra-low power consumption with modes such as SHUTDOWN (10 nA), DEEPSTOP (0.6 µA to 0.9 µA)
- Cortex-M0+ microcontroller running up to 64 MHz with dynamic current consumption of 18 µA/MHz
- Integrated BlueNRG core coprocessor for Bluetooth Low Energy timing critical operations
- Support for 2.4 GHz proprietary radio wireless communication and Bluetooth Mesh networking
- Enhanced security features including true random number generator (RNG), AES encryption, public key accelerator (PKA), and CRC calculation unit
- High-speed and flexible memory types: 256 Kbytes Flash, 64 Kbytes RAM, 1 Kbyte OTP, and 7 Kbytes ROM
- Advanced communication interfaces: SPI, SPI/I2S, LPUART, USART, I2C, and PDM
- Integrated 12-bit ADC, battery monitoring, and temperature sensor
- Low-power RTC and advanced 16-bit timer
- High efficiency SMPS step-down converter and integrated PDR circuitry
Applications
- Industrial automation and control systems
- Personal electronics such as wearables and smart home devices
- IoT devices requiring low power and reliable wireless connectivity
- Health and fitness trackers
- Smart sensors and monitoring systems
Q & A
- What is the Bluetooth version supported by the BLUENRG-345AC?
The BLUENRG-345AC supports Bluetooth 5.2 specifications.
- What is the maximum data rate of the BLUENRG-345AC?
The maximum data rate is 2 Mbps, with additional support for 1 Mbps, 500 kbps, and 125 kbps.
- What is the operating temperature range of the BLUENRG-345AC?
The operating temperature range is -40°C to +105°C.
- What type of microcontroller is integrated into the BLUENRG-345AC?
The BLUENRG-345AC integrates a Cortex-M0+ microcontroller that can operate up to 64 MHz.
- What are the key security features of the BLUENRG-345AC?
The key security features include a true random number generator (RNG), AES encryption, public key accelerator (PKA), and CRC calculation unit.
- What is the power consumption in SHUTDOWN mode?
The power consumption in SHUTDOWN mode is 10 nA at 1.8 V.
- What types of memory are available on the BLUENRG-345AC?
The BLUENRG-345AC has 256 Kbytes of Flash memory, 64 Kbytes of RAM, 1 Kbyte of OTP memory, and 7 Kbytes of ROM.
- What communication interfaces are supported by the BLUENRG-345AC?
The BLUENRG-345AC supports SPI, SPI/I2S, LPUART, USART, I2C, and PDM interfaces.
- Is the BLUENRG-345AC suitable for industrial applications?
Yes, the BLUENRG-345AC is suitable for industrial applications due to its robust specifications and compliance with various radio frequency regulations.
- What is the package style and mounting method of the BLUENRG-345AC?
The package style is QFN-32, and the mounting method is Surface Mount.
