Fiche technique pour BMD-34 Series Summary

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BMD-34 series
Stand-alone Bluetooth 5 low energy modules
Full Bluetooth 5, Thread, and Zigbee (IEEE 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 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
Product summary
Product description
The BMD-34 series are advanced, highly flexible, ultra-
low-power multiprotocol modules that enable concurrent
Bluetooth 5, Thread and Zigbee (IEEE 802.15.4) connectivity
for portable, extremely low power embedded systems,
offering the greatest radio range and coverage. With an
Arm® Cortex®-M4 with FPU, integrated 2.4 GHz transceiver,
an extended range of interfaces and embedded hardware
cryptographic engine, the BMD-34 modules provide a
complete RF solution allowing faster time to market
with reduced development costs and advanced security
capabilities. Providing full use of the Nordic nRF52840’s
capabilities and peripherals, the BMD-34 can power the most
demanding applications, all while simplifying designs and
reducing BOM costs.
The BMD-34 is an ideal solution for designs that require
Bluetooth 5 features or 802.15.4 based networking for
Thread and Zigbee. The Bluetooth 5 long range feature
provides extended range, and the optional PA/LNA boost the
link budget even further, bringing range and coverage to the
maximum. Built in USB and 5.5 V compatible DC-DC supply
reduces design complexity and BOM cost, while expanding
possible applications. The modules are certified for Europe,
US, Canada, and Australia/New Zealand, including antenna
alternatives for either internal PCB antenna, or a U.FL
antenna connector for external antenna. BMD-34 designs
are footprint compatible with a range of other BMD-modules,
thus providing flexibility for tiered product lineups.
pcb = Internal PCB antenna
U.FL = U.FL antenna connector
M4F = 64 MHz Arm® Cortex®-M4 with FPU
= Feature enabled by HW. The
actual support depends on
the open CPU application SW.
BMD-340
BMD-341
BMD-345
Grade
Automotive
Professional
Standard •••
Radio
Chip inside nRF52840
Bluetooth qualification v5.0 v5.0 v5.0
Bluetooth low energy •••
Thread / Zigbee •••
Bluetooth output power EIRP [dBm] 710 18
Max range [meters] 500 750 1000
NFC •••
Antenna type (see footnotes) pcb U.FL U.FL
Application software
Open CPU for embedded applications •••
Interfaces
UART 
SPI 
I2C 
I2S 
USB 
PDM and PWM 
GPIO pins 48 48 44
AD converters [number of bits] 12 12 12
Features
MCU (see footnotes) M4F M4F M4F
RAM [kB] 256 256 256
Flash [kB] 1024 1024 1024
Simultaneous GATT server and client 
Throughput [Mbit/s] 1.4 1.4 1.4
Maximum Bluetooth connections 20 20 20
Secure boot 
Bluetooth mesh 
FOTA 
UBX-19033359 - R05
10.2 × 15.0 × 2.0 mm
Standard
Professional
Automotive
10.2 × 15.0 × 1.9 mm
BMD-34 series
Features
Bluetooth v5.0 (Bluetooth low energy)
NFC NFC-A tag support
Range BMD-340: 500 m
BMD-341: 750 m
BMD-345: 1000 m
Max. radiated
output power
(EIRP)
BMD-340: 7 dBm
BMD-341: 10 dBm
BMD-345: 18 dBm
Conducted
sensitivity
(Bluetooth mode)
BMD-340, -341: –96 dBm (1 Mbit/s)
–103 dBm (125 Kbit/s)
BMD-345: –102 dBm (1 Mbit/s)
–107 dBm (125 kbit/s)
Bluetooth address Unique public Bluetooth address provided (in
flash, on label)
Bluetooth
operating modes
Simultaneous central and peripheral roles
LE 2M PHY (2 Mbps)
LE 1M PHY (1 Mbps)
Coded PHY 500 kbps (long range)
Coded PHY 125 kbps (long range)
Advertising Extensions
LE Data Length Extension
Channel Selection Algorithm #2
Antenna BMD-340: Integrated PCB antenna
BMD-341, -345: U.FL antenna connector
Development
environment
Nordic SDK (including Bluetooth Mesh
HomeKit™, AirFuel™e, IoT)
Customers develop and embed their own
application on top of the Bluetooth stack in the
BMD-34 modules (open CPU concept)
Security Arm® TrustZone® CryptoCell™ cryptographic unit
Secure boot
Secure Simple Pairing
128-bit AES encryption
Bluetooth low energy secure connections
Interfaces and peripherals*
UART 2 blocks. 1200 baud to 1 M baud, parity, CTS
and RTS support
SPI Master 4 blocks. 125 kHz to 8 Mhz clock rates
SPI Slave 3 blocks. 125 kHz to 8 Mhz clock rates
QSPI Master 1 block. Max 32 MHz. XIP support
TWI (I2C) Master 2 blocks. 100 kHz to 400 kHz clock rates
TWI (I2C) Slave 2 blocks. 100 kHz to 400 kHz clock rates
NFC NFC-A, 13.56 MHz, 106 kbps, wake-on-field
PDM 1 block. 2 microphones (left/right) 16 kHz
sample rate, 16-bit
I2S 1 block. Master and slave, bidirectional
ADC 8-ch, 12-bit @ 200 ksps
PWM 4 blocks, 4 channels each
LP Comparator 8-ch, VCC, int and ext ref, 15 levels
GP Comparator 8-ch, VCC and internal ref, 64 levels
Temp. Sensor Internal, -40 °C to 85 °C, +/- 4 °C, 0.25 °C resolution
GPIO BMD-340, -341: 48; BMD-345: 44
Input High: 0.7 x VCC; Input Low: 0.3 x VCC;
13 kΩ pull-up/pull-down
Timers 5 x 32-bit and 3 x 24-bit RTC with 12-bit
prescaler, watchdog
USB peripheral 1 block. USB 2.0 full speed, 12 Mbps. 2 control,
14 bulk/interrupt endpoints
* Not all simultaneously
Package
Dimensions BMD-340, -341: 10.2 × 15.0 × 1.9 mm
BMD-345: 10.2 × 15.0 × 2.0 mm
Weight < 1.0 g
Mounting Machine mountable
Solder pins
Environmental data, quality & reliability
Operating
temperature
–40 °C to +85 °C
Storage
temperature
–40 °C to +125 °C
Humidity RH 5 – 90% non-condensing
RoHS RoHS 3 compliant
Electrical data
Power supply BMD-340, -341: 1.7 VDC to 5.5 VDC
BMD-345: 2.0 VDC to 3.6 VDC
Power consumption
in Bluetooth low
energy mode for
BMD-340, BMD-341
TX only @ max TX power: 14.8 mA @ 3 V
TX only @ 0 dBm: 4.8 mA @ 3 V
Off, no RAM retention: 0.4 µA at 3 V
On, no RAM retention: 0.97 µA at 3 V
Power consumption
in Bluetooth low
energy mode for
BMD-345
TX only @ max TX power: 51 mA @ 3 V
Off, no RAM retention: 0.7 µA @ 3 V
On, no RAM retention: 1.3 µA @ 3 V
Certifications and approvals
Type approvals Europe (ETSI RED); US (FCC/CFR 47 part 15
unlicensed modular transmitter approval);
Canada (ISED RSS); Australia and New
Zealand (RCM);
Japan (MIC) - only for BMD-340
Health and safety EN 62479, EN 62368-1
Bluetooth
qualification
v5.0 (Bluetooth low energy), Bluetooth RF PHY
Support products
BMD-340-Eval Evaluation kit for BMD-340 with open CPU and
internal PCB antenna
BMD-341-Eval Evaluation kit for BMD-341 with open CPU and
U.FL antenna connector
BMD-345-Eval Evaluation kit for BMD-345 with open CPU,
PA/LNA, and U.FL antenna connector
Product variants
BMD-340 With internal PCB antenna, open CPU
BMD-341 With U.FL antenna connector, open CPU
BMD-345 With U.FL antenna connector, PA/LNA,
open CPU
UBX-19033359 - R05
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For more product details and ordering information, see the product
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