EFR32BG21 Long-Range Low-Power Bluetooth 5.2 Mô -đun

Against the backdrop of the rapid popularization of the Internet of Things (IoT), industrial interconnection and intelligent terminals, Bluetooth communication technology is evolving towards longer transmission distance, lower power consumption, higher stability and stronger compatibility. các FSC-BT677D mô-đun, with Phòng thí nghiệm silicon EFR32BG21 as its main control chip, achieves a communication distance far exceeding that of traditional Bluetooth while maintaining ultra-low power consumption, making it an ideal choice for long-range, low-power and miniaturized application scenarios.

Core Performance

1. Long-Range Support

BLE 5.2 Tiêu chuẩn: As the foundation of long-range communication, the Bluetooth 5.2 low-power standard provides optimized physical layer specifications, laying a solid technical foundation for the module’s long-distance transmission capability.

LE 2Mbit PHY: This physical layer enhancement enables high-speed data transmission, ensuring efficient and reliable interaction of large data packets even in long-range communication scenarios, avoiding data loss or latency caused by long-distance transmission.

LE mã hóa PHY: By enhancing coding and error correction capabilities, this feature significantly improves the module’s diffraction performance and anti-interference ability. It effectively compensates for signal attenuation during long-distance transmission, enabling stable long-range connection even in complex environments with mild obstacles.

Lớp học 1 ủng hộ: With optimized RF design and high receiving sensitivity of the EFR32BG21chip, the module supports high transmit power up to +20 DBM. In open, line-of-sight and interference-free test environments, the effective communication range can reach up to 300 mét.

2. Tiêu thụ điện năng thấp

Relying on advanced low-power technologies, the module is equipped with fast wake-up and multi-level power-saving mechanisms:

Deep sleep current is as low as 4.5 μA(typical, with RTC active and memory retained).

Operating current is only 50.9 μA, under typical connected BLE conditions, greatly reducing overall system power consumption.

For battery-powered devices such as smart bracelets, sensors and remote controls, it can significantly extend the battery life and reduce the frequency of charging and maintenance.

3. Industrial-Grade Reliability

The module has an operating temperature range of -40℃ ~ +105℃ with the same storage temperature specification, ensuring stable operation in frigid outdoor environments and high-temperature industrial sites. Adopting a miniaturized 24-pin stamp hole package with dimensions of 13 mm×16.5 mm, it is easy for SMT mass production and saves motherboard space.

4. Rich Interfaces & User-Friendly Features

Built-in PCB on-board antenna for out-of-the-box use; an external antenna is also supported to further extend the transmission distance;

Supports BLE master/slave switching for flexible adaptation to gateways and terminals;

Provides general-purpose interfaces including UART, I2c, SPI, PWM, and 12-bit ADC;

Supports UART baud rates from 1200 ĐẾN 230400 HA (115200 bps by default), compatible with serial communication of mainstream MCUs;

Supports OTA over-the-air upgrade for convenient later functional iteration and fault repair;

Compatible with standard BLE protocols such as ATT, GATT and any Custom Services, enabling fast integration with mobile phones, tablets and gateways for rapid project implementation.

Typical Application Scenarios

Scenario 1: Industrial Wireless Sensing and Data Acquisition

Scenarios such as industrial plants, warehousing and logistics, and power computer rooms often require collecting data such as temperature and humidity, air pressure, current, voltage, water leakage and smoke detection. Traditional wiring is costly, difficult to construct and poor in scalability, and cables are prone to aging and damage. Building a BLE Mesh long-range sensor network with the FSC-BT677D module enables low-cost, high-reliability and easy-maintenance wireless data acquisition.

Bluetooth Function Implementation Process:

1. Terminal sensors (temperature/humidity, current, water leakage probes) are connected to the FSC-BT677D via UART, and the module operates in slave mode for data transmission;
2. Leveraging the long-range feature of BLE 5.2, sensor data is sent to the gateway via advertising or connection mode;
3. The gateway module scans and establishes connections in master mode, and realizes relaying through the Mesh protocol to break through distance limitations and cover large-scale workshops and complex occluded environments;
4. The gateway aggregates the data and uploads it to the cloud or local upper computer to realize real-time monitoring, threshold alarm and historical curve query;
5. The module runs in low-power mode and can work continuously for months to years with battery power supply, featuring wire-free deployment, easy installation and simple later capacity expansion.

Scenario 2: Portable Medical Monitoring Devices

Portable medical devices such as household oximeters, ECG recorders and blood pressure monitors require small size, long battery life, data security and direct mobile phone connection. Traditional wired connection restricts movement, while ordinary Bluetooth has short transmission distance and high-power consumption. The FSC-BT677D module perfectly adapts to portable health monitoring devices with its mini size, ultra-low power consumption and compliance with standard BLE protocols.

Bluetooth Function Implementation Process:

1. The front end of the device collects signals (ECG, blood oxygen, blood pressure) and sends them to the FSC-BT677D via serial port;
2. The module broadcasts standard GATT services in slave mode, allowing mobile phones/tablets to quickly scan, discover and establish BLE connections;
3. With the high-speed transmission of LE 2M PHY, real-time upload of waveforms, values and alarm information is realized to ensure low latency;
4. The module’s deep sleep and fast wake-up mechanism enables it to enter low-power mode during non-transmission periods, greatly extending battery life;
5. Supports GATT Client & Peripheral modes, which can connect to health APPs to realize data storage, report generation and remote diagnosis;
6. Supports OTA upgrade for convenient device firmware update and improved algorithm and compatibility.

III. Product Advantage Summary

1. Long range & strong penetration: With +20 công suất phát dBm, -104.9 dBm high receiving sensitivity and BLE 5.2 Coded PHY, it outperforms traditional BLE modules by a wide margin in transmission distance and anti-interference capability;
2. Tiêu thụ điện năng cực thấp & long battery life: μA-level sleep current, ideal for battery-powered IoT terminals;
3. Kích thước nhỏ & easy mass production: Stamp hole package, on-board antenna and rich interfaces enable rapid integration;
4. Industrial-grade high stability: Wide-temperature operation and strong anti-interference performance, suitable for outdoor and industrial environments;
5. Dễ sử dụng & develop: Supports master-slave integration, BLE Mesh and OTA upgrade, and realizes direct connection with mobile phones/gateways via standard protocols;
6. Wide temperature tolerance: The operating temperature range of -40℃~+105℃ allows the FSC-BT677D to cope with harsh high and low temperature conditions in industrial sites and ensure stable data transmission;
7. Ultra-compact design: các 13 mm×16.5 mm small size facilitates integration into bracelets, portable box-type devices and other products; the on-board antenna simplifies the structure, reduces the design difficulty of the whole machine and meets the miniaturization and lightweight requirements of medical products.
8. Phần kết luận

The FSC-BT677D integrates BLE 5.2, long-range transmission, ultra-low power consumption, mini size and industrial-grade reliability in one, providing a high-performance and cost-effective Bluetooth connection solution for wireless sensing, intelligent hardware, industrial IoT, sức khỏe y tế, Nhà thông minh, outdoor equipment and other fields. Whether for portable terminals pursuing long battery life or industrial networks emphasizing wide coverage, the FSC-BT677D can help products achieve rapid landing and upgrading with its stable, efficient and user-friendly features.