Silicon Labs' BT121 is a Bluetooth Smart Ready module targeted for applications that require both Bluetooth Smart and Classic connectivity. It can connect to legacy devices that only support Bluetooth SPP or Apple iAP2 profiles as well to devices that support Bluetooth Smart.
BT121 integrates a high-performance Bluetooth radio, a low-power ARM® Cortex™ microcontroller and a Bluegiga Bluetooth Smart Ready stack software making it extremely easy-to-use as no RF or Bluetooth software development is needed. BT121 can be used as a modem together with a separate host MCU, but applications can also be embedded into the built-in ARM Cortex MCU with the Bluegiga BGScript™ scripting language.
| Key Benefits |
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- Bluetooth Smart Ready compatible
- Connectivity to both Bluetooth BR/EDR and Smart devices, especially legacy devices that do not have Bluetooth Smart support
- Excellent RF performance
- Robust and long range connectivity
- Integrated Bluetooth stack software and profiles
- No Bluetooth development needed by end the customer
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- On-board applications with BGScript
- BoM and size savings, since no external MCU is needed
- Network co-processor mode
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| Specifications |
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- Bluetooth features
- Bluetooth 4.1 Smart Ready compliant
- Up to 6 x BR/EDR connections
- Up to 7 x BLE connection
- 1 x BR/EDR + 7 x BLE connections simultaneously
- SPP, iAP2, GATT over BR Bluetooth profiles
- Any Bluetooth Smart profile
- 1000 kbps throughput over SPP
- 250 kbps throughput over iAP2
- Radio features
- Integrated antenna
- TX power
- +8 dBm with Bluetooth Smart
- +12 dBm with Bluetooth BT/EDR
- RX sensitivity - 96 dBm
- 200 to 400 meter line of site (LoS) range
- Hardware interfaces
- UART host interface
- SPI, UART, and I2C peripheral interfaces
- GPIO, ADC, and DAC
- RTC
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- Software and SDK:
- BGAPITM serial protocol API over UART for modem usage
- BGLIBTM host API which implements BGAPI protocol
- BGScript scripting language for stand-alone usage
- Profile ToolkitTM for creating GATT based services
- BGTool Bluetooth test application for PC
- Example applications for BGScript
- Documentation
- SDK is free-of-charge and available at: www.bluegiga.com/bt121
- Electrical characteristics:
- Supply voltage: 2.2 V to 3.6 V
- Environmental and regulatory
- Temperature range: 40°C to 85°C
- Bluetooth, CE, FCC and IC, Japan, and South Korea qualified
- Dimensions:
- W x L x H: 11 mm x 13.9 mm x 2.2 mm
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