BT680T, Bluetooth 5 Module, Long Range, Automobile Temperature

 

BT680F

 

BT680F Series use Toshiba TC35680 SoCs. They are long range Bluetooth 5 modules supporting CODED PHY for range up to 900 meters at 125 kbps. 

Model Variants

BT680F Bluetooth 5 Module

BT680FAT is preloaded with AT Command Codes for legacy products upgrading to Bluetooth 5 features and longer range.

BT680E with an u.FL connector for external antenna.

BT680T can operate in automobile temperature range with an external serial EEPROM.

Bluetooth 5 Specifications

Three key features of Bluetooth 5 specs for Bluetooth 5 products:

  1. 2X bandwidth to support 2Mbps data rate.
  2. 4X range to provide coverage of an entire home or building.
  3. 8X broadcasting message length from 31 bytes to 255 bytes.

Bluetooth SIG CORE_v5.0 LE CODED PHY uses FEC (Forward Error Correction) codes, 8 or 2 symbols to represent 1 data bit, and 1 M Symbols per second (MSps) transmission rate. Effectively, the maximum data rate is 125 kbps when 8 symbols are used. This FEC coding allows receivers to receive much weaker signals and to increase range by 4 times.

Mesh Network

BT680T with Bluetooth mesh stacks can be used with available WiFi to BLE gateway or BLE 5 USB dongle to connect to an IoT Cloud server.

 Using BlueFan Bluetooth 5 modules in Bluetooth 5 mesh networks

Using BlueFan Bluetooth 5 modules in Bluetooth 5 mesh networks

Features

  • Standalone or used with a host MCU by UART interface/HCI Commands
  • Bluetooth SIG certified BLE 5 stacks embedded in mask-ROM.
  • Toshiba SOC, built-in Cortex M0 processor
  • Masked-ROM: 240KB
  • RAM: 144KB
  • Flash: 128KB
  • Bluetooth RF analog core, baseband digital core and integrated antenna
  • TX power: +8 dBm
  • Receiver sensitivity at 1Mbps: -96.5 dBm
  • Receiver sensitivity at 125 Kbps (coded PHY): -107 dBm
  • Size: 15x20.8x1.9mm
  • Bluetooth range: 900 meters at 125 Kbps, estimated.
  • Bluetooth range: 450 meters at 1Mbps, estimated.
  • Secure connection
  • Bluetooth Low Energy (BLE) V5 GATT profile with OTA (Over The Air) support. 
  • Up to 17 General Purpose IOs to be configured by firmware:
    • SPI interface, I2C interface
    • UART interface, 9600bps to 921.6 Kbps
    • Up to 2 wake up interfaces
    • Up to 6 ADC channels (1 for internal monitoring of VDD).
    • Up to 4 PWM channels
  • On board 26 MHz main clock
  • External 32.768 kHz sleep clock
  • Operation voltage: 2.0V-3.6V
  • Peak current consumption, 11 mA; deep sleep mode, <0.1uA
  • Integrated PCB trace antenna,
  • Operation Temperature: -40oC to +125oC
  • Needs an external serial EEPROM.         
  • Hybrid Castellated and LGA, 40 pins:  pins. Easier prototyping, easier production.
  • Integrated shield to resist EMI

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