WT21 contains a Bluetooth radio, antenna and the low level Bluetooth Host Controller Interface (HCI) software but still offers the benefits of a module: easy, risk free implementation and qualifications. WT21 is based on CSR’s BlueCore-6 chip and offers the lowest current consumption and the highest integration level in its class. WT21 is compatible with Windows, Windows CE and Linux™ operating systems. WT21 combined with Bluegiga’s excellent technical support designers ensure quick time to market, low development costs and risk.
  • An integrated Bluetooth HCI module
  • Low development costs
  • Fast time to market
  • No qualification costs
  • Co-existence with Bluegiga Wi-Fi products


  • Bluetooth v. 2.1 + EDR
  • Bluetooth class 1.5 radio:
  • Transmit power: + 7 dBm
  • Receiver sensitivity: -88 dBm
  • Range: 150 meters line-of-sight
  • Integrated chip antenna
  • 802.11 co-existence interface
  • Seven software programmable IO pins
  • Low power 1.5V operation, 1.8V to 3.6V I/O
  • Industrial temperature range: -40C to +85C
  • HCI over UART or SDIO
  • PCM and I2S audio interfaces
  • Dimensions:11.6 x 17.1 x 2.5mm
  • Bluetooth, CE, FCC, IC and Japan qualified

WT21 Resources

Bluegiga Datasheet
Bluegiga WT21 Datasheet
Bluegiga Product Brief
Bluegiga WT21 Product Brief

WT21 Products

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