Bluetooth Low Energy Module: Microchip BM70BLES1FC2-0B03AA Datasheet and Application Overview
The Microchip BM70BLES1FC2-0B03AA is a highly integrated, standalone Bluetooth Low Energy (BLE) 5.0 module designed to provide a seamless and low-power wireless connectivity solution for a wide range of Internet of Things (IoT) applications. This module encapsulates a complete BLE system, including firmware, protocol stack, and profile support, significantly reducing development complexity and time-to-market for product designers.
Based on the BM70 system-on-chip (SoC), the module features an onboard crystal oscillator, RF matching network, and a built-in PCB antenna. This high level of integration ensures robust RF performance and simplifies the PCB design process, as critical high-frequency circuitry is already contained within the pre-certified module. The BM70BLES1FC2-0B03AA is pre-programmed with Microchip's proprietary firmware, which manages all BLE protocol operations. This allows the host microcontroller to communicate with the module via a simple UART interface using ASCII-based commands, offloading the entire BLE stack processing from the host MCU.
A key strength of this module is its ultra-low power consumption, which is critical for battery-operated devices. It supports multiple power-down modes, including deep sleep, allowing it to operate for extended periods on a single coin-cell battery. The module supports various GATT-based profiles for standard roles like Heart Rate Sensor, Blood Pressure Monitor, and HID, and can be easily customized for proprietary data transmission needs.
From a datasheet perspective, the module operates in the global 2.4 GHz ISM band and supports BLE 5.0 features such as 2x the speed and 4x the range compared to previous BLE versions (through LE 2M PHY and LE Coded PHY). Its compact form factor (15.0 x 10.0 x 2.2 mm) makes it suitable for space-constrained designs. Furthermore, the module carries necessary regulatory certifications (like FCC, IC, CE, RED), which drastically reduces the cost and effort associated with product qualification.
In application, the BM70 module is ideal for creating sensors, beacons, remote controls, health monitors, and smart home devices. A typical application circuit involves connecting the module's UART (TX/RX) pins to a host microcontroller, along with power and a few control pins for functions like reset and mode selection. Developers can use a graphical user interface (GUI) provided by Microchip to easily configure the module's parameters, such as device name, advertising interval, and connection settings, without writing low-level BLE code.
ICGOOODFIND: The Microchip BM70BLES1FC2-0B03AA stands out as a premier solution for developers seeking to add robust, certified, and low-power BLE 5.0 connectivity with minimal engineering overhead. Its standalone operation and simple command interface make it an excellent choice for accelerating the development of a wide spectrum of IoT products.
Keywords: Bluetooth Low Energy, Ultra-Low Power, UART Interface, IoT Connectivity, BLE 5.0
