FSC-BT677D EFR32BG21 Small Ultra-Long-Range BLE 5.2 Module
FSC-BT677D Bluetooth low energy chip incorporates a 32-bit 80 MHz ARM Cortex-M33 microcontroller, delivering a maximum power output of 20 dBm. It features a high sensitivity of -97.5 dBm (1 Mbit/s GFSK) and includes a DSP instruction and floating-point unit for efficient signal processing. Utilizing low-power gecko technology, it ensures fast wake-up times and energy-saving modes. The chip’s software and SDK support Bluetooth Low Energy (LE), Bluetooth 5.2, and Bluetooth mesh network, alongside compatibility for developing proprietary wireless protocols. This module is ideal for battery-operated applications requiring both high performance and low energy consumption.
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- 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, 12-bit 1Msps SAR ADC
- Support the OTA upgrade
- Bluetooth stack profiles support: LE HID and all BLE protocols
- PWM
| 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 |
| General Purpose I/O | ||
| Default 115200, N, 8, 1 | ||
| Baudrate support from 1200 to 230400 bps | ||
| 5, 6, 7, 8 data bit character | ||
| GPIO | 20 (maximum – configurable) lines | |
| O/P drive strength (4 mA) | ||
| Pull-up resistor (40 KΩ) control | ||
| Read pin-level | ||
| 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 |
| 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) | 13 × 16.5 × 1.62; Pad Pitch 1.27 |
| 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 |
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