2.
Hardware Features
A description of some of the key features in the BM71-XPro board is provided below. Refer to
for details of
the kit contents.
2.1
Power Supply
Power the BM71-XPro kit using any of the power sources listed below:
• Micro USB port (J1)
• XPro Connector
Use the J2 header for selecting between these power supply options using a jumper. The green LED (LD1) indicates
that the board is powered by a micro-USB. The micro-USB has ESD and overcurrent protection, and the input to the
module is controlled via an LDO (U1). The BM71-XPro board can be operated in a standalone mode when powered
via the micro-USB.
2.2
USB-UART Bridge
The MCP2200 in the BM71-XPro board provides the option to evaluate the BM71 module in Standalone mode. By
default (out of the box), the BM71 module is set to operate in Auto mode. So, the module, once powered via the
micro-USB, will be able to connect to a peer Bluetooth Low Energy device and open a data pipe for data transfer.
Refer to
3.1 Connecting the BM71 XPRO to MBD App in Auto Mode
for details. Apart from powering the board, the
micro-USB port can also be used to evaluate and test the module via a host PC. Microchip provides emulation tools,
such as a UI tool, auto pattern tool, and manual tool (refer to
for details) to evaluate the BM71 via a
host PC. The BM71 module can be set to operate in Manual mode for complete control or in Auto mode for a simple
data pipe application.
2.3
XPRO Connector
The BM71-XPro board has an Xplained Pro (XPRO) header to offer connectivity and control from a host MCU. The
header is based on a standard extension header and its pin details are specified in the following table. The headers
have a pitch of 2.54 mm. For details on the operating the BM71-XPro via a host MCU Xplained Pro board, refer to
3.3 Connecting the BM71-XPro to MBD App in Manual Mode (Host PC)
.
Table 2-1. Extension Header (J1) Pin Description
Pin#
Pin name
Description
1
ID
ID Chip communication
2
GND
Ground
3
ADC1
Connected to pin P2_0 to set system configuration
4
ADC2
Connect to Reset pin of BM71
5
RTS/GPIO
Connected to host MCU RTS
6
CTS/GPIO
Connected to host MCU CTS
7
PWM+
PWM pin (+) of host MCU
8
PWM-
PWM pin (-) of host MCU
9
GPIO
Connected to GPIO pin P2_7 (TX_Ind)
10
GPIO
Connected to GPIO Pin P1_6 (RX_Ind)
BM71-XPro
Hardware Features
©
2019 Microchip Technology Inc.
DS50002891A-page 4
