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

Standard

Professional

Automotive

BMD-340-A-R

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

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BMD-341-A-R

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

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BMD-345-A-R

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

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Documentation & resources

Product variants	BMD-340	BMD-341	BMD-345
Short Range Features
Bluetooth qualifications	5.0 (Bluetooth Low Energy)
Chip inside	nRF52840
Bluetooth low energy output power EIRP [dBm]	7	13	16
Maximum range [m]	500	750	1700
Maximum number of connections	20
Bluetooth profiles and services	Bluetooth GATT
CPU Features
Operation mode	Standalone module open CPU
MCU	Cortex-M4 with FPU, 64 MHz
RAM [kB]	256 kB
Flash [kB]	1024 kB
Interfaces
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	✓
Electrical data
Maximum supply [V]	5.5		3.6
Minimum supply [V]	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
Antennas	Internal PCB antenna	U.FL connector
Dimensions
Dimensions [mm]	10.2×15.0×1.9(2.0)