MICROCHIP BM70BLE01FC2-0B04AA BLUETOOTH MODULE, V4.2, 2.402-2.48GHZ

The MICROCHIP BM70BLE01FC2-0B04AA is a fully integrated Bluetooth Low Energy module compliant with Bluetooth v4.2 specification, operating in the 2.402-2.48GHz ISM band for wireless communication applications. Professional engineers and IoT developers utilize this module to build energy-efficient wireless connectivity into embedded systems, wearables, medical devices, and industrial IoT solutions without requiring extensive RF design expertise. This module solves the critical challenge of implementing certified Bluetooth Low Energy connectivity with minimal PCB footprint, power consumption, and time-to-market for battery-powered and always-connected applications.

Product Overview

The BM70BLE01FC2-0B04AA is a surface-mount Bluetooth Low Energy module that integrates a complete Bluetooth stack, RF transceiver, baseband processor, and antenna on a single compact module. The device operates on a single 3.3V supply with ultra-low quiescent current, making it ideal for battery-powered applications. The integrated antenna design eliminates the need for external RF components, reducing design complexity and certification time. The module supports both central and peripheral Bluetooth roles, enabling flexible connectivity topologies for master-slave communication scenarios.

This Microchip module features advanced power management with multiple sleep modes, allowing developers to achieve multi-year battery life in coin-cell powered devices. The BLE v4.2 implementation includes support for LE Data Length Extension, enabling higher throughput and improved range compared to earlier Bluetooth versions. The module integrates a high-performance ARM Cortex-M0 processor running the complete Bluetooth stack, eliminating the need for an external host microcontroller for basic BLE operations. Advanced features include configurable transmit power levels from -20dBm to +3dBm, adaptive frequency hopping spread spectrum for interference mitigation, and comprehensive security with AES-128 encryption and key management.

Key Specifications

Specification	Details
Product Type	Bluetooth Low Energy Module
Brand	Microchip Technology
Origin	Original/Authentic
Warranty	7 days on manufacturing defects
Shipping	1-5 days from Bengaluru
Delivery	7-8 days across India
Support	24/7 via Email and WhatsApp
Bluetooth Version	Bluetooth v4.2 Low Energy
Operating Frequency	2.402-2.48 GHz ISM Band
Supply Voltage	2.0V to 3.6V (Typical 3.3V)
Transmit Power	-20 dBm to +3 dBm (Configurable)
Receiver Sensitivity	-92 dBm at 1 Mbps
Module Dimensions	13mm x 13mm x 2.5mm (Approx)

Key Features

• Fully Integrated Bluetooth v4.2 Stack with ARM Cortex-M0 processor eliminating need for external host controller in basic applications
• Ultra-Low Power Operation with configurable sleep modes achieving sub-microamp quiescent current for extended battery life
• Integrated Antenna Design reducing PCB space requirements and simplifying certification process for faster product development
• LE Data Length Extension Support enabling data payloads up to 251 bytes for improved throughput and range performance
• Advanced Security Features including AES-128 encryption, key management, and secure pairing mechanisms for IoT applications
• Adaptive Frequency Hopping providing robust interference mitigation in crowded 2.4GHz environments
• Configurable Transmit Power Levels from -20dBm to +3dBm for range and power consumption optimization
• Multiple Role Support functioning as both Bluetooth Central and Peripheral for flexible network topologies

Applications and Use Cases

• Wearable Health Monitoring Devices such as fitness trackers, smartwatches, and medical alert systems requiring multi-day battery life with continuous BLE connectivity
• Industrial IoT Sensor Networks for asset tracking, environmental monitoring, and predictive maintenance in manufacturing facilities with harsh RF environments
• Smart Home Automation Controllers including lighting control, door locks, and HVAC systems requiring low-power wireless mesh networking capabilities
• Medical Device Integration for patient monitoring equipment, insulin pumps, and diagnostic devices requiring certified Bluetooth connectivity with stringent power and reliability requirements
• Beacon and Location Services deploying BLE proximity beacons for indoor positioning, retail analytics, and navigation applications
• Consumer Electronics Integration in wireless keyboards, mice, headphones, and portable speakers requiring compact form factor and extended battery operation

How to Use

The BM70BLE01FC2-0B04AA module integrates seamlessly into embedded designs through a simple UART or SPI interface to a host microcontroller, though it can operate standalone for basic BLE applications. Begin by designing the PCB layout with proper power supply decoupling using 10uF and 100nF capacitors placed close to the module power pins, maintaining impedance-controlled traces for the antenna connection. Configure the module firmware via serial commands to set device name, advertising parameters, transmit power level, and security credentials before deployment. The module enters low-power advertising mode by default, consuming approximately 30uA while broadcasting, and can be awakened by connection events or external GPIO triggers for responsive IoT applications.

For optimal performance, maintain proper antenna clearance with no ground plane within 5mm of the integrated antenna, and keep RF traces away from high-speed digital signals to minimize interference. Implement proper power supply filtering with a 3.3V regulator capable of supplying 100mA peak current during transmission bursts, as the module draws approximately 15mA during active transmission and 5mA during reception. Use the provided software development kit and example code to rapidly prototype BLE applications, leveraging the module's built-in stack to reduce firmware development time. Configure connection parameters such as minimum and maximum connection intervals, slave latency, and supervision timeout based on your application's latency and power requirements.

Frequently Asked Questions

What is the maximum range of the BM70BLE01FC2-0B04AA module?

The BM70BLE01FC2-0B04AA achieves approximately 100-150 meters line-of-sight range at maximum transmit power setting of +3dBm with a -92dBm receiver sensitivity. Actual range varies significantly based on environmental factors including obstacles, RF interference, antenna orientation, and the receiving device's antenna quality. In indoor environments with walls and obstacles, expect 20-50 meter typical range. Higher transmit power settings increase range at the cost of increased current consumption, while lower power settings reduce range but extend battery life significantly.

Can this module operate as both Bluetooth Central and Peripheral simultaneously?

Yes, the BM70BLE01FC2-0B04AA supports simultaneous Central and Peripheral roles, known as dual-role operation, allowing the module to connect to multiple devices while simultaneously advertising itself to others. This capability enables complex network topologies such as mesh networks and bridge applications where a single node acts as both a sensor endpoint and a network relay. However, simultaneous operation of multiple roles consumes additional power and requires careful firmware configuration to manage connection timing and bandwidth allocation.

What is the power consumption profile for different operational modes?

The module exhibits highly variable power consumption depending on operational state: quiescent sleep mode draws less than 1 microamp, advertising mode consumes approximately 30 microamps, active connection with data transmission draws 15-20 milliamps, and active reception draws 5-8 milliamps. Battery life calculations must account for duty cycle, with intermittent advertising consuming far less power than continuous connected operation. A CR2032 coin cell can power a beacon device for 2-3 years with typical advertising intervals, while continuous data transmission reduces battery life to weeks or days depending on data rate and transmit power settings.

When will I receive my order?

Orders are dispatched within 1-5 business days from our Bengaluru warehouse. Delivery takes 7-8 days to most locations across India.

What is your return and warranty policy?

We offer a 7-day return policy on manufacturing defects only. Contact support within 7 days of receipt for free replacement or full refund. Not applicable for user damage or misuse.

Are bulk discounts available?

Yes, wholesale pricing for orders of 10 or more units. Contact our sales team via WhatsApp or email for a customized bulk quote.

Why Buy from The Engineer Store

• Genuine Products: Sourced directly from authorized distributors with authentication
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• Fast Shipping: Dispatched within 1-5 days from our Bengaluru warehouse
• Pan-India Delivery: 7-8 days to Mumbai, Delhi, Chennai, Hyderabad, Pune, Kolkata
• Payment Options: COD, UPI, credit/debit cards, net banking, EMI available
• Technical Support: 24/7 expert guidance via email and WhatsApp
• Returns: 7-day return policy on manufacturing defects only

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