Features
- Bluetooth low energy (BLE) 5.2
- Integrate MCU to execute Bluetooth protocol stack
- Postage stamp sized form
- Class 1 support (up to +20 dBm)
- The default UART Baud rate is 115.2Kbps and can support from 1200 bps up to 230.4 Kbps
- UART, I²C, SPI, 12-bit 1Msps SAR ADC
- Support the OTA upgrade
- Bluetooth stack profiles support: LE HID and all BLE protocols
- PWM
Applications
- Lighting
- Connected Home
- Gateways and Digital Assistants
- Building Automation and Security
Specifications
| Categories | Features | Implementation |
| Wireless Specification | Chip model | Silicon Labs EFR32BG21 |
| Bluetooth Version | Bluetooth low energy (BLE) 5.2 | |
| Frequency | 2.4 ~ 2.4835 GHz | |
| Transmit Power | +20 dBm (Maximum) | |
| Receive Sensitivity | -97.5 dBm @ 1 Mbit/s GFSK -94.4 dBm @ 2 Mbit/s GFSK -104.9 dBm @ 125 kbps GFSK |
|
| Modulation | GFSK | |
| Host Interface and Peripherals | UART Interface | TX, RX, CTS, RTS |
| General Purpose I/O | ||
| Default 115200, N, 8, 1 | ||
| Baudrate support from 1200 to 230400 bps | ||
| 5, 6, 7, 8 data bit character | ||
| GPIO | 15 (maximum - configurable) lines | |
| O/P drive strength (4 mA) | ||
| Pull-up resistor (40 KΩ) control | ||
| Read pin-level | ||
| I2C Interface | 1 (configurable from GPIO total). Up to 400 kbps | |
| ADC Interface | Analog input voltage range: 0V ~ 3.3V | |
| Supports single 12-bit 1 Msps SAR ADC conversion | ||
| 8 channels (configured from GPIO total) | ||
| PWM | 3 General-Purpose Timer Modules | |
| Four General-Purpose Timer Modules (Two 16-Bit or One 32-Bit Timers, PWM Each) |
||
| Profiles | Classic Bluetooth | NA |
| Bluetooth Low Energy | GATT Client & Peripheral - Any Custom Services | |
| BT5.2 Specifications | ||
| Maximum Connections | Classic Bluetooth | NA |
| Bluetooth Low Energy | 1 Clients | |
| FW upgrade | Over the Air | |
| Xds | ||
| Supply Voltage | Supply | 1.71V ~ 3.8V |
| Power Consumption | 33.8 mA TX current @ 20 dBm output power at 2.4 GHz | |
| Standby Doze (Wait event): ~5mA | ||
| 50.9 μA/MHz in Active Mode | ||
| 4.5 μA DeepSleep current (16 kB RAM retention and RTC running from LFRCO) | ||
| Physical | Dimensions (mm) | 10 × 11.9 × 1.8; Pad Pitch 1.1 |
| Environmental | Operating | -40°C to +105°C |
| Storage | -40°C to +105°C | |
| Miscellaneous | Lead Free | Lead-free and RoHS compliant |
| Warranty | One Year | |
| Humidity | 10% ~ 90% non-condensing | |
| MSL grade: | MSL 3 | |
| ESD grade: | Human Body Model | All pins: ±2500V |
| Charged device model | RF pins / Non-RF pins: ±750V |
Firmware Options
| Firmware No. | Application | Profiles Support |
|---|---|---|
| FSC-BT671D | BLE Master & Slave | BLE, OTA |
| FSC-BT671D | Mesh Network | MESH |
| FSC-BT671D | Gateway | Gateway |
| FSC-BT671D | Other | Customization |