u-blox

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
short_range
standard

Standard

professional

Professional

automotive

Automotive

Product variants

BMD-340

with internal PCB antenna

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BMD-341

with U.FL connector for external antenna

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BMD-345

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

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Related links
BMD-34 Product Summaryfile icon
BMD-340 Data Sheetfile icon
BMD-341 Data Sheetfile icon
BMD-345 Data Sheetfile icon
EVK-BMD-34/38eye icon
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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