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FSC-BT677C EFR32BG21 BLE 5.2 SIG Mesh Module (Master & Slave Multi-Connection and Long Range)

FSC-BT677C Bluetooth low energy chip integrates a 32-bit 80 MHz ARM Cortex-M33 microcontroller, offering a maximum power output of 10 dBm and a high receiving sensitivity of -97.5 dBm at 1 Mbit/s GFSK. It includes a DSP instruction set and floating-point unit for efficient signal processing, supported by low-power gecko technology for fast wake-up times and energy-saving modes. The chip’s software and SDK facilitate Bluetooth Low Energy (LE), Bluetooth 5.2, and Bluetooth mesh network implementations, alongside support for proprietary wireless protocols. With its energy-efficient design and integrated radio transceiver, the FSC-BT677C is well-suited for battery-operated applications and other systems demanding both high performance and low energy consumption.

$4.90

Features

  • Bluetooth low energy (BLE) 5.2
  • Integrate MCU to execute Bluetooth protocol stack
  • Postage stamp sized form
  • Class 1 support (up to +10 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

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 +10 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
Power Consumption 33.8 mA TX current @ 10 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) 13 × 16.5 × 1.62; Pad Pitch 1.3
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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