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
Integrated chip antenna (BM7xBLES1FC2)
Receive Sensitivity: typical -90 dBm (LE)
- Refer to 4.0 Antenna, Table 4-1, and
Transmit Power: 0 dBm (typical)
Table 4-2 for antenna performance
Received Signal Strength Indication (RSSI) specifications
monitor with 1 dB resolution
External antenna connection through RF pad
(BM7xBLE01FC2)
MAC/Baseband/Higher Layer Features
Power Management
Secure AES128 encryption
Bluetooth 4.2 specification optional features: GAP, Two low power modes supported, with wake-up
GATT, SMP, L2CAP and integrated public profile through GPIO or internal timer
To create custom GATT services, refer to the Average current: Tx=3.3 mA and Rx=3.2 mA with
BM70/71 Bluetooth Low Energy Module Users buck at 3.0V VBAT input and 18.75 ms connection
Guide (DS50002542) for details. interval, when transmitting full data packets to
achieve a data rate of approximately 8.6 kbps
Configurable role as peripheral/central, client/
server
2015-2018 Microchip Technology Inc. DS60001372H-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 beacon
technology to enhance the user experience for the IoT
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.
DS60001372H-Page 2 2015-2018 Microchip Technology Inc.