RF-star RF-BM-4044B4

The Bluetooth module RF-BM-4044B4 is a BLE RF module developed based on the CC2640R2FRSM chip, widely applicable in short-range wireless communication. It features low power consumption, compact size, long transmission range, and strong anti-interference capability. This module supports the development of Bluetooth 5 (BLE 5)-based consumer electronics and mobile peripheral products, providing customers with a rapid BLE solution for communication between their products and smart mobile devices. The module series integrates a 32-bit ARM Cortex-M3 processor running at the same 24 MHz frequency as the main processor, offering a rich peripheral feature set — including a unique ultra-low-power sensor controller designed for interfacing with external sensors and/or autonomously acquiring analog and digital data while the system is in sleep mode. The Bluetooth Low Energy controller is embedded in ROM and runs independently on an ARM Cortex-M0 processor. This architecture improves overall system performance and power efficiency while freeing up flash memory for applications. This module type is developed for the BLE 5.0 protocol stack to meet market demands, delivering 2× the communication speed, 4× the communication range, and 8× the advertising data throughput compared to BLE 4.2 modules. Acting as a bridge between smart mobile devices and peripheral products, it greatly simplifies host-side application development. In bridge mode (UART), existing products or solutions can easily communicate with mobile devices (supporting Bluetooth 5.0 and below) using this transparent transmission module, enabling powerful intelligent control and management. This module is designed to rapidly bridge electronic products with smart mobile devices, making it broadly applicable across a wide range of electronics requiring such connectivity. Users can leverage this module to integrate existing solutions or products with the shortest development cycle, accelerate time-to-market, and inject cutting-edge technological capabilities into their business growth.

• Bluetooth 5.0 protocol stack, with 2× data rate, 4× communication range, and 8× advertising payload length compared to 4.2
• Manual physical layer bandwidth adjustment for enhanced communication range and data rate
• MTU size linked to connected device for flexible packet size allocation
• Simple to use — no Bluetooth protocol stack experience required
• Universal UART interface design, full-duplex bidirectional communication, minimum baud rate 4800bps
• Default 20ms connection interval for fast connection establishment
• AT command support for software module reset and MAC address retrieval
• AT command support for Service UUID modification
• Serial data packet length: any length up to 1024 bytes (inclusive), with automatic segmentation for large packets
• AT command support for Bluetooth connection interval adjustment to control forwarding rate (dynamic power consumption adjustment)
• AT command support for TX power adjustment, advertising interval modification, custom advertising data, custom device ID, serial baud rate modification, and module name modification
• High-speed transparent transmission (between master and slave modules), stable rate up to 16K/S
• Mobile app support for module name, serial baud rate, product ID, custom advertising content, and advertising interval modification
• Mobile app support for remote module reset and TX power configuration
• Mobile app support for Bluetooth connection interval adjustment (dynamic power consumption adjustment)
• Connection status and advertising status indicator pins
• Mobile app support for remote factory reset of module
• Bluetooth connection status strings (connected, normal disconnection, and timeout disconnection) retrievable from TX serial port
• Ultra-low power standby mode — CC2640R2F chip official sleep current: 0.1μA

• Instrumentation
• Logistics Tracking
• Healthcare
• Smart Home
• Motion Metering
• Automotive Electronics
• Recreational Toys