What is the "BM78" module that supports dual-mode Bluetooth® 5.0 and is ideal for IoT?

BM78 is a Bluetooth module compatible with version 5.0 provided by Microchip.

Compared to the previous version, Bluetooth 5.0 has enhanced power saving functions, IPv6 support, 128bit AES encryption, and up to 2.5 times the transfer speed, strengthening support for IoT applications.

Features of the BM78 module

  • Equipped with an antenna that has already received radio wave certification and has an RF shield, enabling development in a short period of time.
  • Compact size (22 x 12 x 2.4 mm) allows mounting in minimal space
  • Bluetooth SIG certification has been obtained, reducing the man-hours required for logo certification
  • Dual-mode Bluetooth and BLE (Bluetooth Low Energy) functionality
  • Supports Bluetooth 5.0 GAP, SDP, SPP, and GATT profiles for instant communication
  • Ideal for battery equipment due to its low power consumption
  • Equipped with a UART interface, enabling Bluetooth communication with a simple program from a microcomputer
  • An Android demo application is provided, so communication with smartphones and tablets can be immediately evaluated.

 

BM78 dual mode module
BM78 dual mode module

Radio Certification Acquired in 5 Regions and Countries

BM78 has CE, FCC, IC, MIC, KCC, NCC, SRRC, and WPC certifications in 7 regions and countries, so it can be used immediately in the EU, USA, Canada, Japan, South Korea, Taiwan, China, and India. can be used for
Therefore, it is possible to deploy products in these regions while significantly reducing the cost and time required for radio wave certification.

PC tool for easy system setting with GUI

By connecting the BM78 module and PC via UART, you can easily configure the following system settings.

  • Setting device information such as device name and pin code
  • security settings
  • Standby mode setting
  • Wake-up setting to microcomputer
  • System setting by battery level detection
  • MFi protocol settings
  • Beacon setting, etc.

 

"BM78 PICtail" evaluation board ready for evaluation

The BM78 PICtail/PICtail Plus board is an evaluation board for the BM78 and comes with:

  • BM78 PICtail/PICtail Plus Board
  • Mini-USB cable


A UART-USB converter is mounted on the board, so you can immediately evaluate the BM78 module by connecting it to a PC with a USB cable.

Evaluation board block diagram

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Block Diagram

Application example

  • wearable equipment
  • digital sports
  • fitness equipment
  • Healthcare/medical equipment
  • car accessories
  • Home automation (remote control toys)
Application example of BM78: Wearable device Application example of BM78: Wearable device
Application examples of BM78: fitness equipment, healthcare/medical equipment Application examples of BM78: fitness equipment, healthcare/medical equipment
Application example of BM78: Home automation (remote control toy) Application example of BM78: Home automation (remote control toy)

Product Summary

Type name BM78
function
  • Certified Bluetooth version 5.0 module
  • Classic Bluetooth and BLE (Bluetooth Low Energy) support
  • Built-in embedded Bluetooth protocol stack (GAP, SDP, SPP, GATT)
  • Easy-to-use transparent mode for data transfer over UART
  • Multiple I/O pins for control and status indication
  • AES128 encryption
  • Transmit power: +2 dBm
  • Receiver sensitivity: -90 dBm (classic), -92 dBm (LE)
  • Firmware is field upgradable via UART
  • Compact surface mount module: 22 x 12 x 2.4 mm
  • Operating temperature range: -20~+70°C
  • Operating Voltage: 3.3~4.3V
  • Bluetooth SIG certified
  • Radio certified (FCC, IC, MIC, KCC, NCC, EU, SRRC, WPC)

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BM78
BM78 PICtail Plus Evaluation Board

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BM78
BM78 PICtail Plus Evaluation Board

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