Overview
The BT121-A-V2-IAP is a Bluetooth Dual Mode module produced by Silicon Labs. This module is integrated with an Apple iAP profile and features a Cortex micro-controller along with the Bluegiga Bluetooth Dual Mode stack software. It is designed to be highly user-friendly, eliminating the need for RF or Bluetooth software development. The BT121 can operate either as a modem with a separate host MCU or as a standalone device with applications embedded into its built-in ARM® Cortex® MCU using the Bluegiga BGScriptTM scripting language.
Key Specifications
| Specification | Details |
|---|---|
| Bluetooth Compliance | Bluetooth 4.1 Dual Mode compliant |
| Connection Modes | Central and peripheral modes |
| BR/EDR Connections | Up to 6 simultaneous connections |
| BLE Connections | Up to 7 simultaneous connections |
| Simultaneous BR/EDR and BLE Connections | 1+6, 2+5, 3+4, 4+3, 5+2, 6+1 combinations |
| TX Power | +12 dBm (BR/EDR), +8 dBm (BLE) |
| RX Sensitivity | -96 dBm |
| Range | Up to 200-400 meters Line of Sight (LoS) |
| Microcontroller | ARM Cortex M0, 48 MHz, 16kB RAM, 128kB flash |
| Supply Voltage | 2.2V to 3.6V |
| Temperature Range | -40°C to +85°C |
| Dimensions | 11.0 mm x 13.9 mm x 2.2 mm (W x L x H) |
| Interfaces | UART, 2 x SPI, 2 x I2C, up to 22 x GPIO with interrupts |
| ADC | 4 x 12-bit ADC |
Key Features
- Integrated Bluetooth Dual Mode Stack
- SPP, iAP2, HID, and GATT over BR Bluetooth profiles
- Any GATT-based Bluetooth LE profile
- 1000 kbps throughput over SPP
- BGAPI™ serial protocol API over UART for network co-processor usage
- BGLIB™ host C library implementing BGAPI serial protocol
- BGScript™ scripting language for standalone usage
- Profile Toolkit™ for creating GATT-based services
- Integrated antenna
- Internal battery voltage measurement option
Applications
- Cable replacement
- HID devices
- Health and fitness devices
- Point-of-Sales (PoS) systems
Q & A
- What is the Bluetooth version supported by the BT121-A-V2-IAP?
The BT121-A-V2-IAP supports Bluetooth 4.1 Dual Mode.
- What are the connection modes supported by this module?
The module supports central and peripheral modes.
- How many simultaneous BR/EDR and BLE connections can the BT121-A-V2-IAP handle?
It can handle various combinations such as 1+6, 2+5, 3+4, 4+3, 5+2, and 6+1 BR/EDR and BLE connections simultaneously.
- What is the transmission power of the BT121-A-V2-IAP?
The transmission power is +12 dBm for BR/EDR and +8 dBm for BLE.
- What is the receiver sensitivity of the module?
The receiver sensitivity is -96 dBm.
- What is the range of the BT121-A-V2-IAP?
The range is up to 200-400 meters Line of Sight (LoS).
- What type of microcontroller is used in the BT121-A-V2-IAP?
The module uses an ARM Cortex M0 microcontroller with a 48 MHz clock speed, 16kB RAM, and 128kB flash.
- What is the supply voltage range for the BT121-A-V2-IAP?
The supply voltage range is 2.2V to 3.6V.
- What are the dimensions of the BT121-A-V2-IAP module?
The dimensions are 11.0 mm x 13.9 mm x 2.2 mm (W x L x H).
- What interfaces does the BT121-A-V2-IAP support?
The module supports UART, 2 x SPI, 2 x I2C, and up to 22 x GPIO with interrupts.
