BM71 by Microchip Technology

Bluetooth Low-Energy Module


The BM71 is a small form factor, Bluetooth Low Energy module measuring only 9 x 11.5 x 2.1 mm. The BM71 module is designed for easy implementation into a broad range of applications. It delivers up to 2.5x throughput improvement and more secure connections vs. Bluetooth 4.1 based products. Developers can easily interface to the device via a standard UART interface, available on most Microcontrollers and Processors. 

The BM71 has a completely integrated Bluetooth software stack, and offers a shielded regulatory certified version with built-in antenna. Developers are freed from the complexities of Bluetooth Software and RF development and can simply utilize the BM71 as a wireline replacement. Perfect for IoT (Internet of Things) applications, when interfaced to a BLE enabled smartphone or Bluetooth Internet Gateway, applications can be monitored, controlled and updated from anywhere in the world.

The Microchip Bluetooth Data (MBD) mobile app is available to speed up development for both Android and iOS.

Microchip's complimentary and confidential Wireless Check online design review service is available for customers who have selected our products for their application design-in*.

*The online design review service is subject to Microchip's Program Terms and Conditions and requires a myMicrochip account.

Looking for a chip level solution? Check out the IC solution here IS1871

Firmware Release Summary, see Software Release Notes for details:

BM71BLEx1FC2-0B05BA - FW 2.03 is a maintenance release for IS1870, IS1871, BM70, and BM71. Firmware version 2.0.3 adds new features/ removes limitations in previous release 1.11 and fixes Sweyntooth vulnerability.

BM71BLEx1FC2-0B04AA - FW 1.11 - Fixes bug with invalid Bluetooth address. Refer to Errata document for more information.

BM71BLEx1FC2-0002AA - FW 1.06 - Initial Release.

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Features

Bluetooth 5 Certified
Module certified for use in USA, Canada, Brazil, Europe, Japan, Korea, Taiwan and China
Mobile Application supported in Microchip Bluetooth Data (MBD)
Latest Firmware Revision: 1.11 (BM71BLEx1FC2-0B04AA)
Supports LE Secure Connections levels 1-3
UART interface
1 x PWM supported
Main Crystal : 32MHz
Temperature sensor supported
12 bits ADC supported for 5CH input ports and battery voltage detection
Wake up by any GPIO
Average current: TX 3.87mA/RX 3.06mA with Buck,@ VBAT=3.0V and 18.75ms Connection Interval
RSSI Monitor
ISM Band 2.402 to 2.480 GHz operation
Channels 0-39
Rx Sensitivity: -90 dBm@ BLE, in typical
Tx Power: +2 dBm
RSSI monitor
Ceramic Chip Antenna (BM71BLES1FC2)
External Antenna Connection (BM71BLE01FC2)

Specifications

Bluetooth Classic-Data/SPP No
Bluetooth Classic-Audio No
Bluetooth Low-Energy Yes
On Board Antenna Yes
On Board Shield Yes
BT SIG Certified Yes
FCC Certified Yes
Unshielded Option Available Yes
Host Interface UART
ASCII Interface No
Audio Channels No
Analog Audio Out No
Digital Audio Out No
MIC-in 0
Line-in No
SPI No
PWM Yes
ADC Channels 5
Security AES128
Temp Sensor Yes
RSSI Yes
Rx Sensitivity -90 dBM
Memory Type Flash
Tx Power +2
GPIO 9
Pin Count 16
Package Type Surface mount module
Package Size 9 x 11.5 x 2.1mm
Temp Range Min -40C
Temp Range Max +85C
Operation Voltage Min 1.9V
Operation Voltage Max 3.6V


Frequently Asked Questions

Where can I find additional details, specifications and documents for a BM71?

Additional datasheets, footprints and schematics for BM71 are listed on our Part Details page. You can also find images and similar parts to BM71 on this page.

What pricing and inventory information can I view?

Distributor pricing and stock information is available for BM71 on our Product Comparison page. Access via the 'View Pricing & Stock' button to view BM71 price breaks, MOQs, lead times, inventory and SKUs from distributors.

Who can I contact for technical support of the product?

Submit any questions directly to the customer support team of the distributor listing the product. For the BM71 you can contact the distributor directly for product support, shipping queries etc.

Is the BM71 RoHS compliant?

This part has not been flagged as RoHS Compliant.

Which authorised distributors for BM71 have stock available?

There is no stock from authorised distributors for BM71.

How do I check stock and lead times for all distributors?

Stock availability and lead times will be displayed for BM71 often in real-time on the comparison pages.

What if I can't find stock of BM71?

You can fill out our help required form which you can use to request a quote for BM71 from some of our verified obsolescence suppliers. Alternatively, contact us via our web chat in the bottom left of your screen and one of our team will try to help.

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