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-A-R

Bluetooth Low Energy Module stand-alone, PCB antenna, open CPU 10.2x15.0 mm, 1000 pcs/reel

BMD-341-A-R

Bluetooth Low Energy Module stand-alone, U.FL connector, open CPU 10.2x15.0 mm, 1000 pcs/reel

BMD-345-A-R

Bluetooth Low Energy Module stand-alone, U.FL, PA/LNA , open CPU 10.2x15.0 mm, 1000 pcs/reel
Related links
BMD-340 Data Sheetfile icon
BMD-341 Data Sheetfile icon
BMD-345 Data Sheetfile icon
BMD-34 Product Summaryfile icon
EVK-BMD-34/38eye icon
Product selection
Documentation & resources
Product variantsBMD-340BMD-341BMD-345
Bluetooth qualificationsv5.0 (Bluetooth Low Energy)
Chip insidenRF52840
Bluetooth low energy output power EIRP [dBm]71316
Maximum range [m]5007501700
Maximum number of connections20
MCUCortex-M4 with FPU, 64 MHz
RAM [kB]256 kB
Flash [kB]1024 kB
UART x 2✓
USB✓
SPI x 4✓
I2S✓
PDM✓
GPIO x 44-✓
GPIO x 48✓-
ADC x 8✓
PWM x 16✓
TWI (I2C compatible) x 2✓
Maximum supply [V]5.53.6
Minimum supply [V]1.72
Maximum temperature [°C]85
Minimum temperature [°C]-40
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✓
AntennasInternal PCB antennaU.FL connector
Dimensions [mm]10.2×15.0×1.9(2.0)
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