Bluetooth Data-Transfer technology offers a simple and direct solution for wireless data transmission, providing traditional embedded devices with wireless transmission capabilities and facilitating efficient interaction with other Bluetooth devices. This approach thoroughly simplifies data transmission solutions. Realtek provides a variety of Bluetooth Data-Transfer Solutions, supporting both Classic Bluetooth and Bluetooth Low Energy technologies, and ensuring and reliable wireless transmission capabilities. These solutions are widely applicable in various scenarios, including instrumentation, smart homes, consumer electronics, and industrial control.
System Structure
The RTL87x3BFx series chips are designed specifically for Realtek's dual-mode Bluetooth Data-Transfer solutions, featuring a complete built-in Bluetooth protocol stack that supports GATT, SPP, and iAP protocols, while simultaneously supporting BR/EDR Slave, BR/EDR Master, BLE Peripheral and BLE Central roles. The chips connect to external controllers via serial interfaces and offer a rich set of flexible control commands, allowing devices to easily integrate Bluetooth functionality.
Additionally, the RTL87x3BFx series provides Bluetooth SoC Data Transfer SDK, which facilitates customization and further development of solutions, flexibly addressing diverse functional requirements for different application scenarios.
Bluetooth dual-mode Turnkey solution The RTL8761ATT is a highly integrated dual-mode Bluetooth transmission chip with a UART interface, embedded with the SPP Server/GATT Server Bluetooth protocol stack, and supports BR/EDR Master and BLE Peripheral roles.
The RTL8761ATT provides custom Data Transfer commands. The main control chip can invoke the built-in SPP and GATT data transfer functions of the RTL8761ATT using these instructions, thereby eliminating the need for Bluetooth protocol stack transplantation at the main control end.
Furthermore, RTL8761ATT also provides usage instructions and examples for custom Data Transfer command, helping developers quickly complete the development of the data transfer function at the master control end.
The RTL8762CMF/RTL8762EMF is a Bluetooth Low Energy SoC solution specifically designed for low-power applications. With its outstanding power management, it significantly extends the battery life of devices, making it the preferred choice for power-sensitive products.
The RTL8762CMF/RTL8762EMF can be quickly configured via AT commands, and supports BLE Peripheral and Central Roles, eliminating the need for complex development processes and shortening the product time-to-market.
Additionally, the RTL8762CMF/RTL8762EMF offers BLE SoC Data Transfer SDK, which allows users to customize and further develop their solutions, flexibly meeting diverse functional requirements for different application scenarios.
Application Scenario
Advantages of Solution
Support multiple Data-Transfer solutions, including Bluetooth Low Energy SoC and Bluetooth Dual Mode Turnkey/SoC options, to meet various application needs and provide flexible solutions.
Support a UART interface with baud rates up to 2Mbps, including the UART H4 protocol and hardware flow control.
Embedded a comprehensive Bluetooth protocol stack supporting GATT, SPP, and iAP protocols.
With exceptional reception sensitivity and TX power, it achieves industry-leading Bluetooth throughput and transmission distance.
A comprehensive SDK development package, accompanied with mobile app project, streamlines customer project development process and accelerates project implementation.
Start Implementing My Bluetooth Data Transfer Application
Clearly identify the functional requirements and performance metrics for the Data-Transfer project, such as data volume and data rate, number of Bluetooth links, and power consumption requirements.
Chip Selection: Based on the functional requirements, determine the required Bluetooth protocols, chip power consumption, IO count. Use the selection guide to choose the appropriate chip.
Evaluation Board Purchase: Purchase the corresponding evaluation board from online stores for functionality evaluation and performance testing to ensure the hardware platform meets the design requirements.
Refer to the guidance document on the data transfer solution to develop the UART command and data transfer process on the MCU controller.
If you are using Bluetooth Low Energy SoC or Bluetooth Dual Mode SoC and require software customization, you may refer to the Bluetooth Low Energy/Bluetooth SoC Data Transfer SDK and related documents.
Reference links: RTL8762CMF, RTL8762EMF, RTL8761ATT, RTL87x3BFx.
Integrate the main control MCU with Data-Transfer modules and other hardware components into the system.
Conduct comprehensive functional, performance, and security tests to ensure system stability and reliability.
Certification Preparation: Prepare relevant documents and test reports to apply for necessary product certifications, such as Bluetooth certification.
Mass Production Preparation: Complete the configuration and testing of the production line to ensure the quality and consistency in large-scale production.
Recommended Hardware
| RTL8761ATT | RTL87x3BFx | RTL8762CMF | RTL8762EMF | |
|---|---|---|---|---|
| MCU | RLX4081 | CM4 60MHz | CM4F 40MHz | CM0+ 40MHz |
| RAM | 112K | 192KB | 160KB | 104KB |
| BT Version | BR/EDR+BLE4.2 Dual Mode | BR/EDR+BLE5.1 Dual Mode | BLE5.0 | BLE5.2 |
| BLE Tx Power | 4dBm | 10dBm | 7.5 dBm | 7.5dBm |
| BLE 1M Rx sensitivity | -87dBm | -97.5dBm | -97dB | -97dBm |
| BT Profile | GATT&SPP | GATT&SPP&iAP | GATT | GATT |
| BT Role | BR/EDR: Slave BLE: Peripheral | BR/EDR: Master&Slave BLE: Peripheral&Center | BLE: Peripheral&Central | BLE: Peripheral&Central |
| GPIOs | 4 | 9 | 25 | 26 |
| UART | 2 | 2 | 2 | 2 |
| Support SDK Customization | N | Y | Y | Y |
| Package (mm) | QFN32, 4x4 | QFN40, 6x4 | QFN40, 5x5 | QFN40, 5x5 |
