FSC-BT677C Bluetooth 5.2 Low Energy SoC module based on Silicon Labs EFR32BG21 chip, incorporates a 32-bit 80 MHz ARM Cortex-M33 microcontroller, delivering a maximum power output of +10 dBm and enhanced Rx sensitivity of -104.9 dBm (min.), suitable for long range application . Utilizing low-power gecko technology, it ensures fast wake-up times and energy-saving modes, with small size design and on-board PCB antenna, this module is ideal for battery-operated applications requiring compact dimensions, high performance and low energy consumption. The module comes with powerful and easy-to-use firmware, developers can use simple UART AT commands to integrate Bluetooth functions.
| Chip | Silicon Labs EFR32BG21 |
| Bluetooth Standard | Bluetooth v5.2 Low Energy |
| Transmit Power | +10 dBm (Max.) |
| Receive Sensitivity | -104.9 dBm (Min.) |
| Profiles | BLE: ATT, GATT, HOGP |
| Certifications | SRRC |
| GPIO Count | 20 |
| Interfaces | UART, I2C, SPI, ADC, PWM |
| Antenna | On-board PCB antenna by default Support installing external Feasycom antenna or other antenna |
| Dimensions (mm) | 13 × 16.5 × 1.62; Pad Pitch 1.27 |
| Operating Temperature | -40°C ~ +105°C |
| Storage Temperature | -40°C ~ +105°C |
| Supply Voltage | VDD: 1.71V ~ 3.8V |
