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
Product variants
with internal PCB antenna
with U.FL connector for external antenna
with PA/LNA and U.FL connector for external antenna
| Product variants | BMD-340 | BMD-341 | BMD-345 |
|---|---|---|---|
| Antenna | |||
| Internal antenna | ✓ | – | |
| Connector for external antenna | – | ✓ | |
| Short range features | |||
| Chip inside | nRF52840 | ||
| Bluetooth qualification | v5.0 (Bluetooth Low Energy) | ||
| Bluetooth low energy output power EIRP [dBm] | 7 | 13 | 16 |
| Maximum range [m] | 500 | 750 | 1000 |
| Maximum number of connections | 20 | ||
| Additional standard | Thread / Zigbee, NFC | ||
| Microprocessor on board | |||
| Standalone module open CPU | ✓ | ||
| Interfaces | |||
| UART | 2 | ||
| USB | 1 | ||
| SPI | 4 | ||
| TWI (I2C compatible) | 2 | ||
| I2S | 1 | ||
| GPIO | 48 | 44 | |
| ADC | 8 | ||
| PWM | 16 | ||
| PDM | 1 | ||
| Electrical data | |||
| Minimum supply [V] | 1.70 | 2.00 | |
| Maximum supply [V] | 5.5 | 3.6 | |
| Environmental data, quality & reliability | |||
| Maximum temperature [°C] | 85 | ||
| Minimum temperature [°C] | -40 | ||
| Size [mm] | 10.2 x 15.0 x 1.9 | 10.2 x 15.0 x 2.0 | |
| Features | |||
| Bluetooth mesh | ✓ | ||
| FOTA | ✓ | ||
| Secure boot | ✓ | ||
| Simultaneous GATT server and client | ✓ | ||
Product Summary
01-Jul-2020
Quick Start
06-Nov-2019
User Guide
23-Apr-2021
23-Apr-2021
Data Sheet
Application Note
CAD/CAE Libraries
Information Note
08-Jul-2020
31-Mar-2020
24-Jan-2020
Conformity and Certification
03-Dec-2020
03-Dec-2020
06-Jul-2020
Overview
16-Mar-2021
08-Oct-2020
