BM70/71
Bluetooth Low Energy (BLE) Module
FIGURE 1: BM70 MODULE
Features
Qualified for Bluetooth SIG v5.0 core specification
Certified to FCC, ISED, MIC, KCC, NCC, and
SRRC radio regulations
Certified by European RED Assessed Radio
module
Compliant to RoHS
Supports UART interface
Supports transparent UART data service of BLE
The BM70 module supports 3-channel pulse-
width modulation (PWM) and the BM71 module
supports 1-channel PWM
Supports Precision Temperature Sensor (PTS) for
ambient temperature detection
FIGURE 2: BM71 MODULE
Supports 12-bit ADC (ENOB=10 or 8 bits) for
battery and voltage detection
Provides 8-channel ADC for the BM70 module
and 5-channel ADC for the BM71 module
Features 18 general purpose I/O (GPIO) pins for
the BM70 module and 9 GPIO pins for the BM71
module
Features integrated 32 MHZ crystal
Small and compact surface mount module
Castellated surface mount pads for easy and
reliable host PCB mounting
RF Features
ISM band 2.402 GHz to 2.480 GHz operation Antenna
Channels: 0 to 39
Chip antenna (BM7xBLES1FC2) range based on
Receive Sensitivity: typical -90 dBm (LE)
open air measurement and phone-module
Transmit Power: 0 dBm (typical) connection:
Received Signal Strength Indication (RSSI) - BM70: up to 50m
monitor with 1 dB resolution
- BM71: up to 10m
External antenna (BM7xBLE01FC2) connection
MAC/Baseband/Higher Layer Features
through RF pad
Secure AES128 encryption
Power Management
GAP, GATT, SMP, L2CAP and integrated public
profile support
Two low power modes supported, with wake up
To create custom GATT services, refer to the through GPIO or internal timer
BM70/71 Bluetooth Low Energy Module Users
Average current: Tx=3.3 mA and Rx=3.2 mA with
Guide (DS50002542) for details.
buck at 3.0V VBAT input and 18.75 ms connection
Configurable role as peripheral/central, client/ interval, when transmitting full data packets to
server achieve a data rate of approximately 8.6 kbps
2015-2019 Microchip Technology Inc. DS60001372J-Page 1BM70/71
Operating Conditions
Operating voltage range: 1.9V to 3.6V
Operating temperature: -40C to +85C
Applications
Internet of Things (IoT)
Secure Payment
Wearable Devices
Home and Security
Health and Fitness
Beacons
Industrial and Data Logger
General Description
The BM70/71 module offers BLE solutions for embed-
ded applications. It conforms to the Bluetooth 5 core
specification to enhance the throughput and security
for the IoT applications. It also supports beaco n
technology to enhance the user experience for the Io T
applications, and enables users to control the cloud
and receive data without opening the application
through a smartphone.
The BM70/71 module has an integrated Bluetooth
stack and is available in different form factors to
optimize space, cost, and RF performance. The power-
optimized design minimizes the current consumption
and extends battery life for portable and wearable
applications.
DS60001372J-Page 2 2015-2019 Microchip Technology Inc.