BMD-34 series (open CPU)

Stand-alone Bluetooth 5.0 low energy modules

Full Bluetooth 5.0 long range and Thread and Zigbee (802.15.4) solution

  • Powerful, ultra-efficient 64 MHz 32-bit Arm® Cortex®-M4 with FPU, 1 MB Flash, and 256 kB RAM
  • Bluetooth 5.0 long range support (Coded PHY)
  • USB 2.0 and Built-in DC-DC converter for direct USB / Li-Ion power
  • Hardware cryptographic unit for secure boot and over-the-air updates
  • Optional PA/LNA for extreme range

S

standard

Standard

professional

Professional

automotive

Automotive

Product variants

BMD-340

with internal PCB antenna

BMD-341

with U.FL connector for external antenna

BMD-345

with PA/LNA and U.FL connector for external antenna

Product Selection
Documentation & resources
Product variantsBMD-340BMD-341BMD-345
Short Range Features  
Bluetooth Qualificationsv5.0 (Bluetooth Low Energy)
Chip InsidenRF52840
Bluetooth low energy output power EIRP [dBm]7 13 16
Maximum range [m]500 750 1000
Maximum number of connections20
Bluetooth profiles and servicesBluetooth GATT
CPU Features  
Microprocessor on boardStandalone module open CPU
Interfaces  
UART2
USB1
GPIO48 48 44
ADC8
SPI4
TWI (I2C compatible)2
I2S1
PDM1
PWM16
Electrical data  
Maximum supply [V]5.5 5.5 3.6
Minimum supply [V]1.7 1.7 2
Environmental data,
quality & reliability
 
Maximum temperature [°C]85
Minimum temperature [°C]-40
Features 
Bluetooth high speed (LE 2M PHY)
Bluetooth long range (coded PHY)
Bluetooth mesh
FOTA
Secure boot ready
Simultaneous GATT server and client
Supports customer applications
General Features 
AntennasInternal antennaU.FL connectorU.FL connector
Dimensions 
Dimensions [mm]10.2×15.0×1.9(2.0) x
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