HLK-B50 BLE Module – High-Speed, Low-Power Wireless Serial Communication
The HLK-B50 Bluetooth Module is a compact, high-performance wireless solution for serial communication, developed by Hi-Link Electronics. Built around a 32-bit ARM Cortex-M3 processor, it supports Bluetooth 5.0 dual-mode operation with seamless pass-through over SPP (Serial Port Profile) and GATT (Generic Attribute Profile).
This module is perfect for enabling Bluetooth wireless data transmission in microcontroller-based or industrial applications. It can be configured in master or slave mode, making it highly flexible for a wide range of scenarios, including device-to-device or device-to-app communication.
One of its key strengths lies in its ultra-fast baud rate of up to 921600bps, making it ideal for time-critical communication between devices. It also supports A2DP v1.3 and AVRCP v1.6 profiles with an integrated Audio CODEC, enabling basic Bluetooth audio streaming.
To support portable and IoT applications, the HLK-B50 includes a built-in lithium battery charging circuit (charging current up to 200mA), and adjustable LDO regulator for stable voltage management. Rich peripheral interfaces such as UART, I2C, SPI, GPIO, PWM, ADC, and I2S offer maximum development flexibility.
Whether you're building a Bluetooth-enabled smart sensor, wearable device, or embedded system, the HLK-B50 provides robust connectivity in a compact form.
Get seamless Bluetooth communication for your project — Order the HLK-B50 module today!
Key Features:HLK-B50 Bluetooth 5.0 Module
- • BLE 5.0 dual-mode (SPP + GATT) with master/slave switching
- • 32-bit ARM Cortex-M3 @ 48MHz – high-speed, low power
- • Serial baud rate up to 921600bps
- • A2DP V1.3 and AVRCP V1.6 support with built-in Audio CODEC
- • Built-in LDO with adjustable output voltage
- • Built-in Watchdog for stable long-term operation
- • Lithium battery charging circuit (200mA max)
- • Rich peripherals: UART, SPI, I2C, GPIO, ADC, I2S, PWM
- • Wide voltage input: 2.6V – 4.2V (typical 3.3V)
Specifications:HLK-B50 Bluetooth 5.0 Module
- • Microcontroller: 32-bit ARM Cortex-M3 @ 48MHz
- • Bluetooth: BLE 5.0 dual-mode (SPP & GATT)
- • Baud Rate: Up to 921600bps
- • Audio Support: A2DP v1.3, AVRCP v1.6
- • Battery Charging: Built-in, up to 200mA
- • LDO: Adjustable output voltage
- • Operating Voltage: 2.6V – 4.2V (3.3V typical)
- • I/O Interfaces: UART, SPI, I2C, GPIO, PWM, I2S, ADC
- • Watchdog Timer: Yes
Package Includes:HLK-B50 Bluetooth 5.0 Module
• 1x HLK-B50 Bluetooth 5.0 Module
• 1x User Manual / Datasheet
• 1x Warranty & Support Card
Top Use Cases:
• Wireless MCU Programming
• IoT Devices & Smart Sensors
• Wearable Technology
• Audio Streaming Modules
• Serial Data Logging & Control Systems
5 FAQs:
1. What is the HLK-B50 module used for?
It's used to add BLE 5.0 wireless serial communication to microcontroller or embedded systems.
2. Can this module be set as both master and slave?
Yes, it supports both master and slave modes for BLE.
3. Does it support Bluetooth audio transmission?
Yes, it supports A2DP and AVRCP protocols for audio applications.
4. Is it compatible with Arduino or STM32 boards?
Yes, with UART or SPI/UART interface, it's compatible with most MCUs including Arduino, STM32, ESP32, etc.
5. Does it support battery charging?
Yes, it includes a built-in lithium battery charging circuit with up to 200mA current.
