Overview
The BT121-A-V2C is a Bluetooth Dual Mode module developed by Silicon Labs, designed for applications requiring both Bluetooth Low Energy (BLE) and Bluetooth Basic Rate/Enhanced Data Rate (BR/EDR) connectivity. This module integrates a Cortex-M0 microcontroller and the Bluegiga Bluetooth Dual Mode stack software, making it highly user-friendly as it eliminates the need for RF or Bluetooth software development. It can be used either as a modem with a separate host MCU or as a standalone device with applications embedded using the Bluegiga BGScript scripting language.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Bluetooth Version | 4.1 Dual Mode | |
| Connections | Up to 6 BR/EDR, Up to 7 BLE, 1+6 BR/EDR + BLE simultaneously | |
| TX Power | +12 dBm (BR/EDR), +8 dBm (BLE) | dBm |
| RX Sensitivity | -96 dBm | dBm |
| Range | 200-400 meters Line of Sight | meters |
| Microcontroller | ARM Cortex-M0, 48 MHz | |
| Memory | 16kB RAM, 128kB flash | |
| Supply Voltage | 2.2V to 3.6V (2.4V to 3.6V with ADC) | V |
| Operating Temperature | -40°C to +85°C | °C |
| Dimensions | 11.0 mm x 13.9 mm x 2.2 mm | mm |
| Interfaces | UART, 2 x SPI, 2 x I2C, up to 22 x GPIO |
Key Features
- Bluetooth 4.1 Dual Mode compliant with central and peripheral modes
- Integrated Bluetooth Dual Mode Stack and various Bluetooth profiles (SPP, iAP2, HID, GATT)
- Support for 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 and BGScript scripting language for standalone usage
- Profile Toolkit for creating GATT-based services
- Integrated antenna and internal battery voltage measurement option
- Up to 4 x 12-bit ADC and internal battery voltage measurement option
Applications
- Cable replacement
- HID devices
- Health and fitness devices
- Point-of-Sales (PoS) systems
- Other applications requiring dual-mode Bluetooth connectivity
Q & A
- What is the BT121-A-V2C module used for?
The BT121-A-V2C is used for applications that require both Bluetooth Low Energy (BLE) and Bluetooth Basic Rate/Enhanced Data Rate (BR/EDR) connectivity.
- What microcontroller is integrated into the BT121-A-V2C?
The module integrates an ARM Cortex-M0 microcontroller.
- What are the key Bluetooth features of the BT121-A-V2C?
It supports up to 6 BR/EDR connections, up to 7 BLE connections, and simultaneous connections of 1+6 BR/EDR + BLE.
- What is the transmission power of the BT121-A-V2C?
The transmission power is +12 dBm for BR/EDR and +8 dBm for BLE.
- What is the range of the BT121-A-V2C?
The range is up to 200-400 meters Line of Sight.
- What are the supported interfaces of the BT121-A-V2C?
The module supports UART, 2 x SPI, 2 x I2C, and up to 22 x GPIO.
- What is the operating temperature range of the BT121-A-V2C?
The operating temperature range is -40°C to +85°C.
- What are the dimensions of the BT121-A-V2C module?
The dimensions are 11.0 mm x 13.9 mm x 2.2 mm.
- Is the BT121-A-V2C module suitable for new designs?
No, it is not recommended for new designs.
- What regulatory certifications does the BT121-A-V2C module have?
The module is certified for Bluetooth, CE, FCC, IC, Japan, and South Korea.
