BM70

The BM70 is a high-performance, low-power Bluetooth Low Energy (BLE) transceiver module designed by Microchip Technology for wireless connectivity in compact and battery-powered applications. It integrates a fully compliant BLE 5.3 radio, baseband controller, and embedded microcontroller, enabling seamless communication over the 2.4 GHz ISM band with robust security features including AES-128 encryption and secure boot. This module supports data rates up to 2 Mbps, extended range through Long Range (LR) mode, and adaptive frequency hopping to minimize interference in crowded RF environments. Its ultra-low power consumption—down to 1.5 µA in sleep mode—makes it ideal for devices requiring long battery life, such as wearables, medical sensors, and IoT endpoints. The BM70 also includes an on-chip antenna, reducing external component count and simplifying PCB design while maintaining excellent RF performance. Designed for ease of integration, the BM70 offers a small form factor (16.5 mm x 11.5 mm x 2.4 mm), supports multiple interface options including UART, SPI, and I2C, and provides flexible GPIOs for peripheral control. It operates across a wide supply voltage range of 1.8 V to 3.3 V, ensuring compatibility with various power management systems. Additionally, the module features built-in temperature sensing and analog-to-digital conversion capabilities, allowing direct interfacing with environmental or industrial sensors without additional hardware. Microchip’s comprehensive software development ecosystem, including the MPLAB X IDE, Harmony 3 middleware, and pre-certified firmware stacks, accelerates time-to-market for developers. The BM70 supports over-the-air (OTA) updates via BLE, enhancing device maintainability and lifecycle flexibility. With its robust EMI/EMC compliance and industrial-grade operating temperature range (-40°C to +85°C), it is well-suited for harsh environments such as industrial automation, smart metering, and asset tracking. Applications span consumer electronics, healthcare devices, home automation, and smart city infrastructure, where reliable, secure, and energy-efficient wireless connectivity is essential. The BM70 enables designers to build scalable, future-proof solutions that meet evolving standards and market demands.