u blox BMD341 User Manual

Abstract

This technical data sheet describes the BMD-341 stand-alone Bluetooth® low energy module. The
OEMs can embed their own application on top of the integrated Bluetooth low energy stack using
Nordic Semiconductor SDK or Arm® Mbed™ integrated development environment (IDE).

www.u-blox.com

UBX-19033643 - R03

BMD-341

Stand-alone Bluetooth 5 low energy modules

Data sheet

BMD-341 - Data sheet

Title

BMD-341

Subtitle

Stand-alone Bluetooth 5 low energy modules

Document type

Data sheet

Document number

UBX-19033643

Revision and date

R03

27-Sep-2019

Disclosure restriction

Product status

Corresponding content status

Functional sample

Draft

For functional testing. Revised and supplementary data will be published later.

In development /
Prototype

Objective specification

Target values. Revised and supplementary data will be published later.

Engineering sample

Advance information

Data based on early testing. Revised and supplementary data will be published later.

Initial production

Early production information

Data from product verification. Revised and supplementary data may be published later.

Mass production /
End of life

Production information

Document contains the final product specification.

Product name

Type number

Firmware version

PCN reference

Product status

BMD-341

BMD-341-A-R-00

N/A

N/A

Initial production

u-blox or third parties may hold intellectual property rights in the products, names, logos and designs included in this
document. Copying, reproduction, modification or disclosure to third parties of this document or any part thereof is only
permitted with the express written permission of u-blox.
The information contained herein is provided “as is” and u-blox assumes no liability for its use. No warranty, either express or
implied, is given, including but not limited to, with respect to the accuracy, correctness, reliability and fitness for a particular
purpose of the information. This document may be revised by u-blox at any time without notice. For the most recent
documents, visit www.u-blox.com.
Copyright © u-blox AG.

Document information

This document applies to the following products:

UBX-19033643 - R03 Document information Page 2 of 36

BMD-341 - Data sheet

Contents

Document information ................................................................................................................................ 2

Contents .......................................................................................................................................................... 3

1 Functional description ......................................................................................................................... 5

1.1 Features ........................................................................................................................................................ 5

1.2 Applications ................................................................................................................................................. 6

1.3 Block diagram .............................................................................................................................................. 6

1.4 Radio performance ..................................................................................................................................... 7

2 Pin definition ........................................................................................................................................... 9

2.1 Pin assignment ............................................................................................................................................ 9

2.2 Peripheral pins ...........................................................................................................................................11

2.3 BMD-300 series footprint compatibility and migration ....................................................................12

2.3.1 BMD-300/301/330/360 to BMD-341 pad differences ..............................................................13

2.3.2 BMD-300/301/330/360 to BMD-341 design migration ...........................................................13

2.4 BMD-341 fan-out example ......................................................................................................................14

3 Electrical specifications ................................................................................................................... 15

3.1 Absolute maximum ratings ....................................................................................................................15

3.2 Operating conditions ................................................................................................................................15

3.3 Power and DCDC configuration ..............................................................................................................15

3.3.1 USB power ..........................................................................................................................................16

3.3.2 Normal (LV) power mode examples ..............................................................................................16

3.3.3 High voltage (HV) power mode examples ....................................................................................17

3.4 General purpose I/O ..................................................................................................................................18

3.5 Module reset ..............................................................................................................................................18

3.6 Debug and programming .........................................................................................................................19

3.7 Clocks ..........................................................................................................................................................19

3.7.1 32.768 kHz crystal (LFXO) ..............................................................................................................19

3.7.2 32.768 kHz clock source comparison ...........................................................................................19

4 Firmware ................................................................................................................................................ 20

4.1 Factory image ............................................................................................................................................20

4.2 SoftDevices ................................................................................................................................................20

4.2.1 S140 ....................................................................................................................................................20

4.2.2 S340 ....................................................................................................................................................20

4.2.3 IEEE 802.15.4 (Thread and Zigbee) ..............................................................................................21

4.3 Bluetooth address .....................................................................................................................................21

5 Mechanical specifications ............................................................................................................... 22

5.1 Dimensions .................................................................................................................................................22

5.2 Recommended PCB land pads ...............................................................................................................22

5.3 Module marking .........................................................................................................................................23

6 RF design notes ................................................................................................................................... 24

6.1 Recommended RF layout and ground plane ........................................................................................24

UBX-19033643 - R03 Contents Page 3 of 36

BMD-341 - Data sheet

6.2 Mechanical enclosure ...............................................................................................................................24

6.3 Approved external antennas ..................................................................................................................24

7 BMD-341 evaluation development kit ......................................................................................... 25

8 Qualification and approvals............................................................................................................. 26

8.1 United States (FCC): ................................................................................................................................26

8.1.1 Labeling and user information requirements .............................................................................26

8.1.2 RF exposure .......................................................................................................................................26

8.2 Canada (ISED) ............................................................................................................................................27

8.2.1 Labeling and user information requirements .............................................................................27

8.2.2 RF exposure .......................................................................................................................................27

8.3 Europe (CE-RED) .......................................................................................................................................28

8.3.1 Labeling and user information requirements .............................................................................28

8.4 Australia / New Zealand (RCM) ..............................................................................................................28

8.5 Bluetooth qualification .............................................................................................................................28

9 Environmental...................................................................................................................................... 29

9.1 RoHS ............................................................................................................................................................29

9.2 REACH .........................................................................................................................................................29

9.3 California proposition 65 (P65) ..............................................................................................................29

10 Product handling ................................................................................................................................. 30

10.1 Packaging ...................................................................................................................................................30

10.2 Reel packaging ...........................................................................................................................................30

10.3 Carrier tape dimensions ..........................................................................................................................30

10.4 Moisture sensitivity level .........................................................................................................................30

10.6 Reflow soldering ........................................................................................................................................31

11 Labeling and ordering information ............................................................................................... 32

11.1 Batch Label .................................................................................................................................................32

11.2 Multipack label...........................................................................................................................................32

11.3 Ordering information ................................................................................................................................33

12 Support and other high-risk use warning .................................................................................. 34

Related documents ................................................................................................................................... 35

Revision history .......................................................................................................................................... 35

Contact .......................................................................................................................................................... 36

UBX-19033643 - R03 Contents Page 4 of 36

BMD-341 - Data sheet

1 Functional description

The BMD-341 is an advanced, highly flexible, ultra-low power multiprotocol SoM that enables
Bluetooth 5 (Bluetooth low energy) and IEEE 802.15.4 (Thread and Zigbee) connectivity for portable,
extremely low power embedded systems. With an ARM® Cortex™-M4F CPU, integrated 2.4 GHz
transceiver, and a U.FL connector for an external antenna, the BMD-341 provides a complete RF
solution allowing faster time to market with reduced development costs. Providing full use of the
Nordic Semiconductor nRF52840 capabilities and peripherals, the BMD-341 can power the most
demanding applications, all while simplifying designs and reducing BOM costs. The BMD-341 is an
ideal solution for designs that require the latest Bluetooth 5 features or 802.15.4 based networking
for Thread. Increased integration with built in USB and 5.5V compatible DC/DC supply reduces design
complexity and BOM cost, while expanding possible applications. BMD-341 designs are footprint
compatible with the BMD-300/301/330/360, providing low-cost flexibility for tiered product lineups.

1.1 Features

 Based on the Nordic Semiconductor nRF52840 SoC
 Bluetooth 5 2M low energy, Advertising Extensions, CSA #2, Coded PHY (Long Range)
 Bluetooth mesh
 IEEE 802.15.4 with Thread and Zigbee support
 Complete RF solution with U.FL connector for an external antenna
 Integrated DC-DC converter
 No external components required
 ARM® Cortex™-M4F 32-bit processor
 ARM® TrustZone® Cryptocell 310 security
 True random number generator
 Serial Wire Debug (SWD)
 Nordic Semiconductor SoftDevice ready
 1 MB embedded flash memory
 256 KB RAM
 48 General Purpose I/O Pins
 12-bit/200 KSPS ADC
 One Full-Speed USB (12 Mbps)
 Four SPI Master/Slave (8 Mbps)
 Quad SPI with Execute in Place (XIP)
 Low power comparator
 Temperature sensor
 Two 2-wire Master/Slave (I2C compatible)
 I2S audio interface
 Two UARTs (w/ CTS/RTS and DMA)
 20 channel CPU independent Programmable Peripheral Interconnect (PPI)
 Quadrature Demodulator (QDEC)
 128-bit AES HW encryption
 5 x 32 bit, 3 x 24 bit Real Timer Counters (RTC)
 NFC-A tag interface for OOB pairing
 Dimensions: 15.0 x 10.2 x 1.9 mm

UBX-19033643 - R03 Functional description Page 5 of 36

BMD-341 - Data sheet

1.2 Applications

 Climate control
 Lighting products
 Safety and security
 Home appliances
 Access control
 Internet of Things
 Home Health Care
 Advanced Remote Controls
 Smart Energy Management
 Low-Power Sensor Networks
 Interactive Entertainment Devices
 Environmental Monitoring
 Hotel Automation
 Office Automation

1.3 Block diagram

Figure 1: Block diagram of BMD-341

UBX-19033643 - R03 Functional description Page 6 of 36

BMD-341 - Data sheet

Detail

Description

Bluetooth

Bluetooth version

Bluetooth 5 Low Energy, Concurrent Central & Peripheral (S140)
Coded PHY (Long Range), 2 Mbps & 1 Mbps PHY, Advertising Extensions,
CSA #2, Bluetooth mesh

Security

AES-128

LE connections

Concurrent central, observer, peripheral, and broadcaster roles with up to
twenty concurrent connections along with one Observer and one
Broadcaster (S140)

IEEE 802.15.4

Thread stack

OpenThread, Thread 1.1 certified

Thread security

AES-128, ARM® Cryptocell accelerated

Zigbee stack

Zigbee 3.0 compliant

Radio

Frequency

2.360 GHz to 2.500 GHz

Modulations

GFSK at 1 Mbps and 2 Mbps, QPSK at 250 Kbps

Transmit power

+8 dBm maximum (at IC pin)

Receiver sensitivity

-96 dBm (BLE 1Mbps PHY)

Antenna

U.FL connector for an external antenna

Current consumption

TX only @ +8 dBm, 0 dBm @ 3V, DCDC enabled

14.8 mA, 4.8 mA

TX only @ +8 dBm, 0 dBm

32.7 mA, 10.6 mA

RX only @ 1 Mbps @ 3V, DCDC enabled

4.6 mA

RX only @ 1 Mbps

9.9 mA

CPU @ 64 MHz from flash, from RAM

6.3 mA, 5.2 mA

CPU @ 64 MHz from flash, from RAM @ 3V,
DCDC enabled

3.3 mA, 2.8 mA

System Off, On (Supply on VCC), no RAM
retention

0.4 µA, 0.97 µA

System Off, On (Supply on VCC), full 256 KB
RAM retention

1.86 µA, 2.35 µA

Dimensions

BMD-341

Length: 15.0 mm ± 0.3mm

Width: 10.2 mm ± 0.3mm

Height: 1.9 mm ± 0.1mm

Hardware

Interfaces

SPI Master/Slave x 4
Quad SPI x 1
UART x 2
Two-Wire Master/Slave (I2C) x 2
GPIO x 48
I2S x1
PWM x 12
PDM x 1
USB 2.0 x 1
Analog input x 8

Power supply

VCC: 1.7 V to 3.6 V, 1.75 V required to start DCDC
VCCH: 2.5 V to 5.5 V
VBUS: 4.35 V to 5.5 V (For USB operation)

1.4 Radio performance

UBX-19033643 - R03 Functional description Page 7 of 36

BMD-341 - Data sheet

Detail

Description

Temperature range

-40 °C to +85 °C

Certifications

USA (FCC)

Canada (ISED)
Europe (CE) (Pending)

Australia / New Zealand (RCM) (Pending)
Bluetooth

FCC part 15.247 modular certification
FCC ID: XPYBMD341
Innovation, Science and Economic Development Canada RSS-247 modular
certification IC: 8595A-BMD341
EN 60950-1: A2:2013 3.1 (a): Health and Safety of the User
EN 301 489-1 V2.1.1 & 3.1 (b): Electromagnetic Compatibility
EN 301 489-17 V3.1.1
EN 300 328 V2.1.1 3.2: Effective use of spectrum allocated
AS/NZS 4268:2017, Radio equipment and systems – Short range devices

BMD-341 RF-PHY Component (Tested) – DID: D040773; QDID: 95452

Export

BMD-341

ECCN: 5A992.C, Exception 742.15(b)(1)
HTS: 8473.30.1180

Nordic Semiconductor nRF52840

nRF52840 Product Specification
nRF5 Software Development Kit

UBX-19033643 - R03 Functional description Page 8 of 36

BMD-341 - Data sheet

No.

Name

I/O

Description

nRF52 pin

Remarks

1

GND

Power

Electrical Ground

GND

2

GND

Power

Electrical Ground

GND 3

GND

Power

Electrical Ground

GND 4

GND

Power

Electrical Ground

GND 5

GND

Power

Electrical Ground

GND 6

P0.25

I/O

GPIO

P0.25

7 P0.26

I/O

GPIO

P0.26

8 P0.27

I/O

GPIO

P0.27

9 P0.28

I/O

GPIO/AIN4

P0.28

Standard drive, low frequency I/O only (<10 kHz)

10

P0.29

I/O

GPIO/AIN5

P0.29

Standard drive, low frequency I/O only (<10 kHz)

11

P0.30

I/O

GPIO/AIN6

P0.30

Standard drive, low frequency I/O only (<10 kHz)

12

P0.31

I/O

GPIO/AIN7

P0.31

Standard drive, low frequency I/O only (<10 kHz)

13

P0.00

I/O

GPIO/XTAL1 (32.768 kHz)

P0.00

14

P0.01

I/O

GPIO/XTAL2 (32.768 KHz)

P0.01

15

P0.02

I/O

GPIO/AIN0

P0.02

Standard drive, low frequency I/O only (<10 kHz)

16

GND

Power

Electrical Ground

GND

17

VCC

Power
In/Out

LV Mode: 1.7 V to 3.6 V in
HV Mode: 1.8 V to 3.3 V
supply out1

VCC

An internal 4.7 µF bulk capacitor is included on
the module. However, it is good design practice to
add additional bulk capacitance as required for
your application, i.e. those with heavy GPIO usage
and/or current draw.

18

GND

Power

Electrical Ground

GND 19

P0.03

I/O

GPIO/AIN1

P0.03

Standard drive, low frequency I/O only (<10 kHz)

20

P0.04

I/O

GPIO/AIN2

P0.04

21

P0.05

I/O

GPIO/AIN3

P0.05

22

P0.06

I/O

GPIO

P0.06

23

P0.07

I/O

GPIO/TRACECLK

P0.07

2 Pin definition

2.1 Pin assignment

Figure 2: BMD-341 Pin assignment (Top view)

UBX-19033643 - R03 Pin definition Page 9 of 36

BMD-341 - Data sheet

No.

Name

I/O

Description

nRF52 pin

Remarks

24

P0.08

I/O

GPIO

P0.08

25

P0.09

I/O

GPIO/NFC1

P0.09

Standard drive, low frequency I/O only (<10 kHz)

26

P0.10

I/O

GPIO/NFC2

P0.10

Standard drive, low frequency I/O only (<10 kHz)

27

P0.11

I/O

GPIO/TRACEDATA[2]

P0.11

28

P0.12

I/O

GPIO/TRACEDATA[1]

P0.12

29

GND

Power

Electrical Ground

GND 30

GND

Power

Electrical Ground

GND 31

P0.13

I/O

GPIO

P0.13

32

P0.14

I/O

GPIO

P0.14

33

P0.15

I/O

GPIO

P0.15

34

P0.16

I/O

GPIO

P0.16

35

P0.17

I/O

GPIO

P0.17

36

P0.21

I/O

GPIO

P0.21

37

P0.19

I/O

GPIO

P0.19

38

P0.20

I/O

GPIO

P0.20

39

P0.18

I/O

GPIO/RESET_N

P0.18

40

P0.22

I/O

GPIO

P0.22

41

P0.23

I/O

GPIO

P0.23

42

P0.24

I/O

GPIO

P0.24

43

SWCLK

I

SWD Clock

SWCLK

44

SWDIO

I/O

SWD IO

SWDIO

45

GND

Power

Electrical Ground

GND 46

GND

Power

Electrical Ground

GND 47

GND

Power

Electrical Ground

GND 48

P1.05

I/O

GPIO

P1.05

Standard drive, low frequency I/O only (<10 kHz)

49

P1.06

I/O

GPIO

P1.06

Standard drive, low frequency I/O only (<10 kHz)

50

P1.07

I/O

GPIO

P1.07

Standard drive, low frequency I/O only (<10 kHz)

51

P1.08

I/O

GPIO

P1.08

52

P1.09

I/O

GPIO/TRACEDATA[3]

P1.09

53

P1.10

I/O

GPIO

P1.10

Standard drive, low frequency I/O only (<10 kHz)

54

P1.11

I/O

GPIO

P1.11

Standard drive, low frequency I/O only (<10 kHz)

55

GND

Power

Electrical Ground

GND

56

P1.00

I/O

GPIO/TRACEDATA[0]/SWO

P1.00

57

P1.01

I/O

GPIO

P1.01

Standard drive, low frequency I/O only (<10 kHz)

58

P1.02

I/O

GPIO

P1.02

Standard drive, low frequency I/O only (<10 kHz)

59

P1.03

I/O

GPIO

P1.03

Standard drive, low frequency I/O only (<10 kHz)

60

P1.04

I/O

GPIO

P1.04

Standard drive, low frequency I/O only (<10 kHz)

61

P1.12

I/O

GPIO

P1.12

Standard drive, low frequency I/O only (<10 kHz)

62

P1.13

I/O

GPIO

P1.13

Standard drive, low frequency I/O only (<10 kHz)

63

P1.14

I/O

GPIO

P1.14

Standard drive, low frequency I/O only (<10 kHz)

64

P1.15

I/O

GPIO

P1.15

Standard drive, low frequency I/O only (<10 kHz)

67

USB-D-

I/O

USB Data-

USB-D-

68

USB-D+

I/O

USB Data+

USB-D+

66

VBUS

Power

USB PHY supply: 4.35 V to

5.5 V in

VBUS

UBX-19033643 - R03 Pin definition Page 10 of 36

BMD-341 - Data sheet

No.

Name

I/O

Description

nRF52 pin

Remarks

Connect to USB Host device 5
V supply

65

VCCH

Power

LV Mode: Connect to VCC
HV Mode: 2.5 V to 5.5 V in

VCCH

An internal 4.7 µF bulk capacitor is included on
the module. However, it is good design practice to
add additional bulk capacitance as required for
your application, i.e. those with heavy GPIO usage
and/or current draw.

Peripheral

Signal

Pin Options

UART0, UART1,
I2C0, I2C1,
SPI0, SPI1, SPI2, SPI3,
I2S0, QSPI0, PDN0,
PWM0, PWM1, PWM2, PWM3

All

P0.00-P0.31, P1.00-P1.15

ADC, COMP, LPCOMP

All

P0.02-P0.05, P0.28-P0.31 (AIN0-AIN7)

NFC

NFC1
NFC2

P0.09
P0.10

Reset

RESET_N

P0.18

Trace

TRACECLK
SWO/TRACEDATA[0]
TRACEDATA[1]
TRACEDATA[2]
TRACEDATA[3]

P0.07
P1.00
P0.12
P0.11
P1.09

SWD

SWD Clock
SWD IO

SWCLK
SWDIO

32.768 kHz Crystal

XTAL1
XTAL2

P0.00
P0.01

USB

USB Data +
USB Data -

USB-D+
USB-D-

Peripheral ID

Base Address

Shared Peripherals

3

0x40003000

SPI0

I2C0 4 0x40004000

SPI1

I2C1

Table 1: BMD-341 pin-out

1: In HV mode, VCC acts as a regulated supply that can power other external devices. The voltage output of VCC can be
configured in software but is limited to no more than VCCH-0.3 V. In System Off mode, VCC can supply no more than 1mA.

2.2 Peripheral pins

The BMD-341 features a pin multiplexing system that allows most internal peripherals, such as UART
and SPI, to be used on any GPIO pin. This freedom in pin choice enables better optimization of designs
and PCB layout. Note that only one peripheral signal can be multiplexed to a GPIO pin at a time. Some
functions are restricted to certain pins due to additional internal circuitry required by the interface.
These include: Trace signals, analog inputs, XTAL signals, USB signals, SWD interface, and reset. See
Table 2 for details:

Table 2: Peripheral pin options

☞ Some peripherals on the BMD-341 share the same memory location for their registers. This means

that only one of these peripherals can be used at a time. It is possible to switch between
peripherals sharing a register location by clearing and reinitializing the associated configuration
registers. See the Nordic Semiconductor nRF52840 Product Specification for details.

Table 3: Peripherals with shared registers

UBX-19033643 - R03 Pin definition Page 11 of 36

BMD-341 - Data sheet

2.3 BMD-300 series footprint compatibility and migration

Figure 3: BMD-340/341 and BMD-300/301/330/360 Footprint comparison

The BMD-341 footprint is identical to the BMD-340 and has been designed to allow for backwards
compatibility with the BMD-300, BMD-301, BMD-330, and BMD-360 modules with pins 1 through 47
of the BMD-341 directly mapping to the same pin numbers on the BMD-300/301/330/360. This allows
BMD-300, BMD-301, BMD-330, and BMD-360 modules to be placed directly onto the BMD-341
footprint for easy migration and enabling tiered product design. Care should be taken to follow ground
plane and keep-out areas if designing for modules with an integrated antenna.

Generally, all pin names and functions remain the same, except for some differences noted below.
Pins 48 through 68 of the BMD-341 footprint are new pads used for new features that are not present
on the BMD-300/301/330/360 modules, such as USB interface and additional GPIO and power
connections.

Figure 4: BMD-300 Module soldered to BMD-340/341 footprint

UBX-19033643 - R03 Pin definition Page 12 of 36

BMD-341 - Data sheet

Pin

BMD-300/301
Name

BMD-300/301
Function

BMD-341
Name

BMD-341
Function

39

P0.21

GPIO/RESET_N

P0.18

GPIO/RESET_N

38

P0.20

GPIO/TRACECLK

P0.20

GPIO

36

P0.18

GPIO/TRACEDATA[0]/SWO

P0.21

GPIO

34

P0.16

GPIO/TRACEDATA[1]

P0.16

GPIO

33

P0.15

GPIO/TRACEDATA[2]

P0.15

GPIO

32

P0.14

GPIO/TRACEDATA[3]

P0.14

GPIO

23

P0.07

GPIO

P0.07

GPIO/TRACECLK

56

N/A

N/A

P1.00

GPIO/TRACEDATA[0]/SWO

28

P0.12

GPIO

P0.12

GPIO/TRACEDATA[1]

27

P0.11

GPIO

P0.11

GPIO/TRACEDATA[2]

52

N/A

N/A

P1.09

GPIO/TRACEDATA[3]

New Pad VCCH:
Connect to VCC

2.3.1 BMD-300/301/330/360 to BMD-341 pad differences

Due to changes in the nRF52840 SoC used by the BMD-341, not all functions (such as SWO/TRACE
signals) are found on the same pins as on the BMD-300/301/330/360. Particularly of note is the reset
pin function which on the BMD-341 is now available on P0.18 instead of P0.21 as on the
BMD-300/301/330/360. To maintain pin for pin compatibility of the reset signal, P0.18 and P0.21
have swapped pad locations on the BMD-341 footprint. These differences are detailed in Table 4
below:

Table 4: BMD-300/301/330 to BMD-341 Pad differences

2.3.2 BMD-300/301/330/360 to BMD-341 design migration

Existing designs incorporating the BMD-300, BMD-301, BMD-330 or BMD-360 module can be
migrated over to the BMD-341 with the addition of a single footprint pad for VCCH (pin 65). This
migration option is only suitable for applications that do not require the new USB interface, additional
GPIO, or higher supply voltage functionality. The VCCH pad must be present and electrically
connected to the same supply as VCC for the module to operate correctly. Vias underneath the
BMD-341 should be tented to avoid shorts to unused module pads. Firmware written for the
BMD-300/301/330/360 can generally be ported to the BMD-341 with minimal effort. See the Nordic
Semiconductor SDK documentation for details.

Figure 5: BMD-300 to BMD-341 Migration Example

UBX-19033643 - R03 Pin definition Page 13 of 36

BMD-341 - Data sheet

Top Layer

Bottom Layer

Figure 6: BMD-341 two-layer fan-out example

Using the BMD-341 minimal footprint, with only the additional VCCH pad added, allows BMD-300
designs to gain the following BMD-341 features with typically minor layout re-work:

 Bluetooth 5 long range modes
 IEEE 802.15.4 (Thread and Zigbee) connectivity
 Doubled Flash memory (1 MB vs. 512 KB)
 Quadrupled RAM (256 KB vs. 64 KB)
 ARM® TrustZone® Cryptocell 310 security co-processor

To take advantage of new hardware features, such as the additional UART and Quad SPI interface,
the full BMD-341 footprint should be used. Designs that require the 5V DCDC converter, trace
interface, USB interface, or the additional GPIO (P1.00-P1.15) must use the full BMD-341 footprint.

☞ Since the BMD-300/301/330/360 can be soldered to the full BMD-340/341 footprint, it is

highly recommended that all new BMD-300/301/330/360 and BMD-340/341 projects use the
full
BMD-340/341 footprint. When migrating designs, the full BMD-341 footprint should be used
whenever possible as it is better suited for use with mass production SMT processing. Care
should be taken to follow ground plane and keep-out areas if designing for modules with an
integrated antenna.

2.4 BMD-341 fan-out example

The following figure is a BMD-341 fan-out example on a simple 2-layer PCB. This example is powered
via VCCH from a USB connection. See section 3.3 for details on power and DCDC operation.

UBX-19033643 - R03 Page 14 of 36

BMD-341 - Data sheet

Symbol

Description

Min

Max

Unit

V

CC_MAX

Voltage on VCC supply pin

-0.3

3.9

V

V

CCH_MAX

Voltage on VCCH supply pin

-0.3

5.8 V V

BUS_MAX

Voltage on VBUS supply pin

-0.3

5.8 V V

IO_MAX

Voltage on GPIO pins (VCC > 3.6V)

-0.3

3.9 V V

IO_MAX

Voltage on GPIO pins (VCC ≤ 3.6V)

-0.3

VCC+0.3 V

V

TS

Storage Temperature Range

-40

125

°C

Symbol

Parameter

Min

Typ.

Max

Unit

V

CC_IN

VCC operating supply voltage in

1.7

3.0

3.6

V

V

CC_START

VCC DCDC starting voltage

1.75 - - V V

CCH_HV

VCCH operating supply voltage in

2.5

5.0

5.5

V

V

BUS_IN

VBUS operating supply voltage in

4.35

5.0

5.5

V

T

R_VCC

VCC Supply rise time (0 V to 1.7 V)

- - 60

ms

T

R_VCCH

VCCH Supply rise time (0 V to 3.7 V)

- - 100

ms

TA

Operating Ambient Temperature Range

-40

25

85

°C

3 Electrical specifications

⚠ Stressing the device above one or more of the ratings listed in the Absolute maximum rating

section may cause permanent damage. These are stress ratings only. Operating the module at
these or at any conditions other than those specified in the Operating conditions section of this
document should be avoided. Exposure to absolute maximum rating conditions for extended
periods may affect device reliability.

☞ Operating condition ranges define those limits within which the functionality of the device is

guaranteed. Where application information is given, it is advisory only and does not form part of
the specification.

3.1 Absolute maximum ratings

Table 5: Absolute maximum ratings

⚠ The product is not protected against overvoltage or reversed voltages. If necessary, voltage spikes

exceeding the power supply voltage specification, given in table above, must be limited to values
within the specified boundaries by using appropriate protection devices.

3.2 Operating conditions

☞ Unless otherwise specified, all operating condition specifications are at an ambient temperature

of 25 °C and a supply voltage of 3.3 V.

⚠ Operation beyond the specified operating conditions is not recommended and extended exposure

beyond them may affect device reliability.

Table 6: Operating conditions

3.3 Power and DCDC configuration

The BMD-341 has two internal regulator stages that each contain an LDO and DCDC regulator. The
first regulator, REG0, is fed by the VCCH pin and can accept a source voltage of 2.5 V to 5.5 V. The
output of REG0 is connected to the VCC pin and the input of the second regulator stage REG1. REG1
supplies power to the module core and can accept an input source voltage of 1.7 V to 3.6 V. Depending
on how the VCC and VCCH pins are connected, the module will operate in one of two modes:

UBX-19033643 - R03 Electrical specifications Page 15 of 36

BMD-341 - Data sheet

Mode

Pin

Name

Connection

Normal (LV)

17
65

VCC
VCCH

1.7 V to 3.6 V source in
Same source as VCC

High Voltage (HV)

17
65

VCC
VCCH

1.8 V to 3.3 V supply out

2.5 V to 5.5 V source in

Normal/Low Voltage (LV) or High Voltage (HV). The voltage present on the VCC pin is always the GPIO
high logic level voltage, regardless of power mode.

To enter LV Mode, the same source voltage is applied to both the VCC and VCCH pins causing REG0
to automatically shut down leaving only the REG1 stage active. To enter HV, the source voltage is only
applied to VCCH causing the VCC pin to become an output source supplied by REG0.

Table 7: Power mode pin connections

⚠ Important: In both LV and HV mode, the GPIO logic level voltage is determined by the VCC pin. In

HV mode, all external devices that are connected to the BMD-341’s GPIO must either be powered
by the module (from VCC) or use level translation.

REG0 can supply a maximum current of 25 mA for the module and external circuits in System On
Mode and 1 mA in System Off Mode. External circuits powered from VCC in HV mode should be limited
to no more than 5 mA to ensure stability at all radio transmit power levels.

3.3.1 USB power

The USB interface on the BMD-341 can be used when the module is in either Normal (LV) or High
Voltage (HV) mode. The BMD-341 USB PHY is powered by a dedicated, internal LDO regulator that is
fed by the VBUS pin (66). This means that applying power to only the VBUS pin will not power the
rest of the module. In order for the USB PHY to operate, VBUS must be externally powered.

3.3.2 Normal (LV) power mode examples

Figure 7: BMD-340/341 LV Mode w/ Coin Cell Example

UBX-19033643 - R03 Electrical specifications Page 16 of 36

BMD-341 - Data sheet

Figure 8: BMD-340/341 LV Mode w/ USB and external regulator

3.3.3 High voltage (HV) power mode examples

Figure 9: BMD-340/341 USB-powered HV mode example

UBX-19033643 - R03 Electrical specifications Page 17 of 36

BMD-341 - Data sheet

Symbol

Parameter

Min.

Typ.

Max.

Unit

VIH

Input High Voltage

0.7 x VCC

-

VCC V VIL

Input Low Voltage

GND - 0.3 x VCC

V

VOH

Output High Voltage

VCC − 0.4

-

VCC V VOL

Output Low Voltage

GND - GND + 0.4

V

RPU

Pull-up Resistance

11

13

16

kΩ

RPD

Pull-down Resistance

11

13

16

kΩ

Figure 10: BMD-340/341 LiPo-powered HV example with USB charger

⚠ Important: The LiPo circuit above is meant to be a generic example of how the BMD-341’s power

modes can be used. Great care must be taken when integrating Lithium-Ion batteries into a
design. Protection circuits suitable for the type of battery used and the application must always
be implemented.

3.4 General purpose I/O

The general purpose I/O is organized as two ports enabling access and control of the 48 available GPIO
pins. The first port allows access of P0.00 to P0.31, similar to the one port available on the
BMD-300/301. The second port, new to the BMD-341, allows access to P1.00 to P1.15. Each GPIO can
be accessed individually with the following user configurable features:

 Input/output direction
 Output drive strength
 Internal pull-up and pull-down resistors
 Wake-up from high- or low-level triggers on all pins
 Trigger interrupt on all pins
 All pins can be used by the PPI task/event system; the maximum number of pins that can be

interfaced through the PPI at the same time is limited by the number of GPIOTE channels

 All pins can be individually configured to carry serial interface or quadrature demodulator signals

Table 8: GPIO

3.5 Module reset

GPIO pin P0.18 may be used for a hardware reset. In order to utilize P0.18 as a hardware reset, the
UICR registers PSELRESET[0] and PSELRESET[1] must be set alike, to the value of 0x7FFFFFD2.

UBX-19033643 - R03 Electrical specifications Page 18 of 36

BMD-341 - Data sheet

Symbol

Parameter

Typ.

Max.

Unit

F

NOM_LFXO

Crystal frequency

32.768

-

kHz

F

TOL_LFXO_BLE

Frequency tolerance, Bluetooth low energy applications

-

±500

ppm

f

TOL_LFXO_ANT

Frequency Tolerance, ANT applications

-

±50

ppm

C

L_LFXO

Load Capacitance

-

12.5

pF

C

0_LFXO

Shunt Capacitance

- 2 pF

R

S_LFXO

Equivalent series resistance

-

100

kΩ

C

pin

Input Capacitance on XL1 & XL2 pads

4 - pF

Symbol

Parameter

Min.

Typ.

Max.

Unit

I

LFXO

Current for 32.768 kHz Crystal Oscillator

-

0.23 - µA

I

LFRC

Current for 32.768 kHz RC Oscillator

-

0.7 1 µA

I

LFSYNT

Current for 32.768 kHz Synthesized Oscillator

-

100 - µA

f

TOL_LFXO_BLE

Frequency Tolerance, 32.768 kHz Crystal Oscillator (Bluetooth
low energy Stack)1

- - ±500

ppm
f

TOL_LFXO_ANT

Frequency Tolerance, 32.768 kHz Crystal Oscillator (ANT Stack)1

- - ±50

ppm

f

TOL_LFRC

Frequency Tolerance, 32.768 kHz RC Oscillator

- - ±5

%

f

TOL_CAL_LFRC

Frequency tolerance, 32.768 kHz RC after calibration

- - ±500

ppm

f

TOL_LFSYNT

Frequency Tolerance, 32.768 kHz Synthesized Oscillator

- - ±48

ppm

When P0.18 is programmed as RESET_N, the internal pull-up is automatically enabled. Nordic
Semiconductor example applications and development kits program P0.18 as RESET_N.

3.6 Debug and programming

The BMD-341 supports the two pin Serial Wire Debug (SWD) interface and offers flexible and powerful
mechanism for non-intrusive debugging of program code. Breakpoints, single stepping, and
instruction trace capture of code execution flow are part of this support.

The BMD-341 also supports ETM and ITM trace. The trace data from the ETM and the ITM is sent to
an external debugger via a 4-bit wide parallel trace port. In addition to parallel trace, the TPIU supports
serial trace via the Serial Wire Output (SWO) trace protocol.

3.7 Clocks

The BMD-341 requires two clocks, a high frequency clock and a low frequency clock. The high
frequency clock is provided on-module by a high-accuracy 32 MHz crystal as required by the
nRF52840 for radio operation.

The low frequency clock can be provided internally by an RC oscillator or synthesized from the fast
clock, or externally by a 32.768 kHz crystal. An external crystal provides the lowest power
consumption and greatest accuracy. Using the internal RC oscillator with calibration provides
acceptable performance for Bluetooth low energy applications at a reduced cost and slight increase
in power consumption.

☞ The ANT protocol requires the use of an external crystal.
☞ f

TOL_LFXO_BLE

applications. Actual tolerance depends on the crystal used.

3.7.1 32.768 kHz crystal (LFXO)

Table 9: 32.768 kHz Crystal (LFXO)

3.7.2 32.768 kHz clock source comparison

and f

TOL_LFXO_ANT

are the maximum allowed for Bluetooth low energy and ANT

Table 10 – 32.768 kHz Clock source comparison

UBX-19033643 - R03 Electrical specifications Page 19 of 36

BMD-341 - Data sheet

4 Firmware

Projects for the BMD-341 should utilize the Nordic Semiconductor SDK and the nRF52840 tools for
new development. This will allow access to the very latest Bluetooth support from Nordic
Semiconductor and provide an ongoing path as new features are released.

4.1 Factory image

The BMD-341 module is not loaded with a factory firmware image.

4.2 SoftDevices

Nordic Semiconductor protocol stacks for Bluetooth and ANT are known as SoftDevices. SoftDevices
are pre-compiled, pre-linked binary files. SoftDevices can be programmed in nRF52 series SoCs and
are downloadable from the Nordic Semiconductor website. The BMD-341 with the nRF52840 SoC
supports the S140 (Bluetooth low energy Central & Peripheral) and S340 (ANT and Bluetooth low
energy) SoftDevices.

4.2.1 S140

The SoftDevice S140 is a feature complete Bluetooth 5 qualified protocol stack for the nRF52840
SoC. It supports up to 20 concurrent links in all roles. It supports Bluetooth 5 features: 2 Mbps, Long
Range, Advertising Extensions and channel selection algorithm #2. The number of connections and
bandwidth per connection are configurable, offering memory and performance optimization.

It is a complete stack with GAP, GATT, ATT, SM, L2CAP, and Link Layer. Both GATT Server and Client
are supported. The broad feature set also includes Privacy 1.2, LE Data Length Extension (DLE),
configurable ATT MTU, L2CAP connection-oriented channels and LE Secure Connections.

SoftDevice S140 is available for download here.

4.2.2 S340

SoftDevice S340 is a combined Bluetooth 5 and ANT™ protocol stack for the nRF52840 SoC,

supporting concurrent operation of the two.

It is a Bluetooth 5 qualified protocol stack that offers up to 20 concurrent links in all roles. It supports
all Bluetooth 5 features: 2 Mbps, Long Range, Advertising Extensions and channel selection algorithm
#2 (CSA #2). The number of connections and bandwidth per connection is configurable, offering
memory and performance optimization.

It is a complete Bluetooth LE stack with GAP, GATT, ATT, SM, L2CAP, and Link Layer. Both GATT
Server and Client are supported. The broad feature set also includes Privacy 1.2, LE Data Length
Extension (DLE), configurable ATT MTU, L2CAP connection-oriented channels and LE Secure
Connections.

It supports all ANT features and offers a variety of network topologies, including peer-to-peer, star
and tree. Up to 15 individual channels are available, with broadcast, acknowledged, or burst transfer
communication.

SoftDevice S340 is available for download here.

UBX-19033643 - R03 Firmware Page 20 of 36

BMD-341 - Data sheet

UICR Register

Address

Description

NRF_UICR + 0x80

0x10001080

Bluetooth_addr [0] (0xCC)

NRF_UICR + 0x81

0x10001081

Bluetooth_addr [1] (0xBB)

NRF_UICR + 0x82

0x10001082

Bluetooth_addr [2] (0xAA)

NRF_UICR + 0x83

0x10001083

Bluetooth_addr [3] (0xEB)

NRF_UICR + 0x84

0x10001084

Bluetooth_addr [4] (0x1D)

NRF_UICR + 0x85

0x10001085

Bluetooth_addr [5] (0x6C)

4.2.3 IEEE 802.15.4 (Thread and Zigbee)

IEEE 802.15.4 based protocols, such as Thread and Zigbee, on the BMD-341 are not implemented
using a SoftDevice. Nordic Semiconductor provides an IEEE 802.15.4 compliant MAC stack which
does not require a SoftDevice to be loaded to operate. Nordic Semiconductor also provides
pre-compiled Thread and Zigbee stacks. See the Nordic Semiconductor SDK for more information on
developing applications that utilize IEEE 802.15.4. Both allow for concurrent operation with Bluetooth
low energy SoftDevices.

4.3 Bluetooth address

The BMD-341 modules are preprogrammed from the factory with a unique public Bluetooth address
stored in the UICR. The u-blox organizationally unique identifier is 6C:1D:EB. This is combined with
the last six characters of the Bluetooth address that are printed on a 2D barcode and in human­readable text on the module label, as described in section 5.3 below.

Table 11: Bluetooth address

UBX-19033643 - R03 Firmware Page 21 of 36

BMD-341 - Data sheet

5 Mechanical specifications

5.1 Dimensions

Figure 11: BMD-341 mechanical drawing

5.2 Recommended PCB land pads

Figure 12: Recommended PCB land pads

☞ There is no RF Keep-out area for BMD-341.

UBX-19033643 - R03 Mechanical specifications Page 22 of 36

BMD-341 - Data sheet

Reference

Description

1

Date of unit production (year/week)

2

Product version

3

Product name

4

Data Matrix with unique serial number of 6 alphanumeric symbols, also in human-readable form. The full
Bluetooth address consists of the u-blox IEEE OUI (6C:1D:EB) with the six symbols appended:
6C:1D:EB:AA:BB:CC

1

2

4

3

5.3 Module marking

The labels of the BMD-341 modules include important product information, as described in this
section.

Figure 13 illustrates the label of the BMD-341 modules, which includes the u-blox logo, product
version, product name, Bluetooth address, and certification numbers.

Figure 13: Module marking

Table 12: BMD-341 label description

UBX-19033643 - R03 Mechanical specifications Page 23 of 36

BMD-341 - Data sheet

#

Mfg.

Part Number

Max Gain

Type

Size

Approvals

1

Pulse

W1030

2 dBi

1/4 Wave Dipole – Whip

Length: 108.3mm

FCC, ISED, MIC

2

Taoglas

FXP73.07.0100A

2.5 dBi

1/4 Wave Dipole – Flex

7 mm x 47 mm x 0.1 mm

FCC, ISED, MIC

3

Pulse

W1027

3.2 dBi

1/4 Wave Dipole – Whip

Length: 136.8mm

FCC, ISED, MIC

4

Kinsun

6670113050-145

2.0 dBi

1/4 Wave Dipole – PCB

12 mm x 65 mm x 0.46 mm

FCC, ISED, MIC

6 RF design notes

6.1 Recommended RF layout and ground plane

Since the BMD-341 relies on an external antenna, there are no ground plane requirements or keep-out
area for the module itself. Refer to the external antenna datasheet for antenna placement and
grounding recommendations.

6.2 Mechanical enclosure

For the BMD-341, refer to the external antenna datasheet for placement in or on a mechanical
enclosure.

6.3 Approved external antennas

The antennas listed below were tested for use with the BMD-341.

Table 13: BMD-341 Approved external antennas

UBX-19033643 - R03 RF design notes Page 24 of 36

BMD-341 - Data sheet

7 BMD-341 evaluation development kit

u-blox has developed full featured evaluation boards that provide a complete I/O pin out to headers,
on-board programming and debugging, 32.768 kHz crystal, power and virtual COM port over USB,
BMD-341 USB connector, 64 Mb quad SPI Flash, four user LEDs, and four user buttons. The
evaluation boards also provide the option to be powered from a CR2032 coin cell battery or a LiPo
battery through a JST-PH connecter and have current sense resistors and headers to allow for
convenient current measurements. Arduino Mega style headers are provided for easy prototyping of
additional functions. The evaluation boards also support programming off-board BMD-3xx series
modules.

Figure 14: BMD-341 evaluation board

UBX-19033643 - R03 BMD-341 evaluation development kit Page 25 of 36

BMD-341 - Data sheet

8 Qualification and approvals

8.1 United States (FCC):

The BMD-341 module has received Federal Communications Commission (FCC) CFR47
Telecommunications, Part 15 Subpart C “Intentional Radiators” modular approval in accordance with
Parts 15.212 and 15.247. The modular approval allows the end user to integrate the module into a
finished product without obtaining subsequent and separate FCC approvals for intentional radiation,
provided no changes or modifications are made to the module circuitry. Changes or modifications

could void the user’s authority to operate the equipment. The end user must comply with all of the

instructions provided by the Grantee, which indicate installation and/or operating conditions
necessary for compliance.

The finished product is required to comply with all applicable FCC equipment authorizations
regulations, requirements and equipment functions not associated with the transmitter module
portion. For example, compliance must be demonstrated to regulations for other transmitter
components within the host product; to requirements for unintentional radiators (Part 15 Subpart B

“Unintentional Radiators”), such as digital devices, computer peripherals, radio receivers, etc.; and to

additional authorization requirements for the non-transmitter functions on the transmitter module
(that is, Verification, or Declaration of Conformity) (for example, transmitter modules may also
contain digital logic functions) as appropriate.

☞ Modification to this product will void the users’ authority to operate this equipment.

⚠ The OEM is still responsible for verifying end product compliance with FCC Part 15, subpart B

limits for unintentional radiators through an accredited test facility.

KDB 996369 D03 sections 2.4 (limited module procedures) and 2.5 (trace antenna designs) are not
applicable to the BMD-341.

8.1.1 Labeling and user information requirements

The BMD-341 is assigned the FCC ID number: XPYBMD341

If the FCC ID is not visible when the module is installed inside another device, then the outside of the
finished product into which the module is installed must also display a label referring to the enclosed
module. This exterior label can use the following or similar wording:

Contains FCC ID: XPYBMD341

In addition to marking the product with the appropriate FCC ID, the end product shall bear the
following statement in a conspicuous location on the device (FCC Rules, Title 47, Subchapter A, Part

15, Subpart B, Chapter §15.19):

This device complies with part 15 of the FCC Rules. Operation is subject to the following two
conditions: (1) This device may not cause harmful interference, and (2) this device must
accept any interference received, including interference that may cause undesired operation.

8.1.2 RF exposure

All transmitters regulated by FCC must comply with RF exposure requirements. KDB 447498 General

RF Exposure Guidance provides guidance in determining whether proposed or existing transmitting

facilities, operations or devices comply with limits for human exposure to Radio Frequency (RF) fields
adopted by the Federal Communications Commission (FCC).

This module is approved for installation into mobile and/or portable host platforms and must not be
co-located or operating in conjunction with any other antenna or transmitter except in accordance

UBX-19033643 - R03 Qualification and approvals Page 26 of 36

BMD-341 - Data sheet

with FCC multi-transmitter guidelines. End users must be provided with transmitter operating
conditions for satisfying RF Exposure compliance.

8.2 Canada (ISED)

The BMD-341 module is certified for use in Canada under Innovation, Science and Economic
Development Canada (ISED) Radio Standards Specification (RSS) RSS-247 Issue 2 and RSSGen.

8.2.1 Labeling and user information requirements

The BMD-341 is assigned the IC ID number: 8595A-BMD341

Labeling Requirements for the Host Device (from Section 3.2.1, RSS-Gen, Issue 3, December 2010):
The host device shall be properly labeled to identify the module within the host device. The Industry
Canada certification label of a module shall be clearly visible at all times when installed in the host
device, otherwise the host device must be labeled to display the Industry Canada certification number

of the module, preceded by the words “Contains transmitter module”, or the word “Contains”, or

similar wording expressing the same meaning, as follows:

Contains transmitter module IC: 8595A-BMD341

User Manual Notice for License-Exempt Radio Apparatus (from Section 7.1.3 RSS-Gen, Issue 3,
December 2010): User manuals for license-exempt radio apparatus shall contain the following or
equivalent notice in a conspicuous location in the user manual or alternatively on the device or both:

This device complies with Industry Canada license exempt RSS standard(s). Operation is
subject to the following two conditions: (1) this device may not cause interference, and (2) this
device must accept any interference, including interference that may cause undesired
operation of the device.

Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radio
exempts de licence. L'exploitation est autorisée aux deux conditions suivantes: (1) l'appareil
ne doit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit accepter tout brouillage
radioélectrique subi, même si le brouillage est susceptible d'en compromettre le
fonctionnement.

Transmitter Antenna (from Section 7.1.2 RSS-Gen, Issue 3, December 2010): User manuals
for transmitters shall display the following notice in a conspicuous location:

Under Industry Canada regulations, this radio transmitter may only operate using an antenna
of a type and maximum (or lesser) gain approved for the transmitter by Industry Canada. To
reduce potential radio interference to other users, the antenna type and its gain should be so
chosen that the equivalent isotropically radiated power (e.i.r.p.) is not more than that
necessary for successful communication.

Conformément à la réglementation d'Industrie Canada, le présent émetteur radio peut
fonctionner avec une antenne d'un type et d'un gain maximal (ou inférieur) approuvé pour
l'émetteur par Industrie Canada. Dans le but de réduire les risques de brouillage radioélectrique
à l'intention des autres utilisateurs, il faut choisir le type d'antenne et son gain de sorte que la
puissance isotrope rayonnée équivalente (p.i.r.e.) ne dépasse pas l'intensité nécessaire à
l'établissement d'une communication satisfaisante.

8.2.2 RF exposure

All transmitters regulated by ISED must comply with RF exposure requirements listed in RSS-102 ­Radio Frequency (RF) Exposure Compliance of Radiocommunication Apparatus (All Frequency
Bands). This module is approved for installation into mobile host platforms and must not be co­located or operating in conjunction with any other antenna or transmitter except in accordance with
Industry Canada's multi-transmitter guidelines. A minimum 20 cm separation distance between any

UBX-19033643 - R03 Qualification and approvals Page 27 of 36

BMD-341 - Data sheet

nearby person and the transmitter or antenna shall be maintained. End users must be provided with
transmitter operating conditions for satisfying RF Exposure compliance.

8.3 Europe (CE-RED)

The BMD-341 is a Radio Equipment Directive assessed radio module that is CE complaint and have
been manufactured and tested with the intention of being integrated into a final product.

The BMD-341 has been tested to current Radio Equipment Directives

EU - Radio Equipment Directive 2014/53/EU

 ETSI EN 300 328 V 2.1.1
 ETSI EN 301 489-1 V2.1.1
 ETSI EN 301 489-17 V3.1.1

The Radio Equipment Directive – Compliance Association (RED-CA) provides guidance on modular
devices at the RED-CA website: http://www.redca.eu/Pages/Documents%201.htm.

8.3.1 Labeling and user information requirements

The label on the final products which contain a u-blox module must follow CE marking requirements.

The “R&TTE Compliance Association Technical Guidance Note 01” provides guidance on final product

CE marking.

8.4 Australia / New Zealand (RCM)

The BMD-341 has been tested to comply with the AS/NZS 4268:2017, Radio equipment and systems
– Short range devices – Limits and methods of measurement. The report may be obtained from your
local FAE., and may be used as evidence in obtaining permission to use the Regulatory Compliance
Mark (RCM).

Information on registration as a Responsible Party, license and labeling requirements may be found
at the following websites:

Australia: http://www.acma.gov.au/theACMA/radiocommunications-short-range-devices-standard-

2004

New Zealand: http://www.rsm.govt.nz/compliance

Only Australian-based and New Zealand-based companies who are registered may be granted
permission to use the RCM. An Australian-based or New Zealand-based agent or importer may also
register as a Responsible Party to use the RCM on behalf of a company not in Australia or New
Zealand.

8.5 Bluetooth qualification

 The Bluetooth SIG maintains the Bluetooth Specification, and ensures that products are properly

tested and comply with the Bluetooth license agreements. Companies that list products with the
Bluetooth SIG are required to be members of the SIG and submit the listed fees. Refer to this link
for details: https://www.bluetooth.com/develop-with-bluetooth/qualification-listing

 The BMD-341 Bluetooth low energy module based on the Nordic Semiconductor nRF52840 is

listed as a “Tested Component”, with Qualified Design IDs (QDID) 95452. This allows an end­product based on a BMD-341 module to inherit the component listings without the need to run
through all of the tests again. The end-product will often inherit several QDIDs, and are identified
on a “Declaration of Compliance”. Refer to the BMD-3xx System Integration Manual for details on
creating an end product declaration.

 The BMD-341 primarily utilizes the S140 SoftDevice.

UBX-19033643 - R03 Qualification and approvals Page 28 of 36

BMD-341 - Data sheet

9 Environmental

9.1 RoHS

The BMD-341 module is in compliance with Directive 2011/65/EU, 2015/863/EU of the European
Parliament and the Council on the restriction of the use of certain hazardous substances in electrical
and electronic equipment.

9.2 REACH

BMD-341 modules do not contain the 201 SVHC (Substance of Very High Concern), as defined by
Directive EC/1907/2006 Article according to REACH Annex XVII.

9.3 California proposition 65 (P65)

This product can expose you to Nickel (metallic), which is known to the State of California to cause
cancer. For more information go to www.P65Warnings.ca.gov. Warnings are not required where the

listed chemical is inaccessible to the average user of the end product.

UBX-19033643 - R03 Environmental Page 29 of 36

BMD-341 - Data sheet

10 Product handling

10.1 Packaging

10.2 Reel packaging

Modules are packaged on 330 mm reels loaded with 1000 modules. Each reel is placed in an antistatic
bag with a desiccant pack and humidity card and placed in a 340x350x65 mm box. An antistatic
warning and reel label are adhered to the outside of the bag.

Figure 15 – Reel cartons

10.3 Carrier tape dimensions

Figure 16 – Carrier tape dimensions

10.4 Moisture sensitivity level

The BMD-341 is rated for MSL 3, 168-hour floor life after opening.

UBX-19033643 - R03 Product handling Page 30 of 36

BMD-341 - Data sheet

10.6 Reflow soldering

Figure 17: Reflow Profile for lead free solder

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BMD-341 - Data sheet

11 Labeling and ordering information

11.1 Batch Label

Figure 18 shows an example of the layout and contents of the batch label. The label is affixed to reels,
sealed bags, and individual packing cartons (inner cartons).

Figure 18: Batch label example

11.2 Multipack label

Figure 19 shows an example of the layout and contents of the multipack label. The label is affixed to
shipping parcels (outer cartons).

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BMD-341 - Data sheet

Ordering Code

Product

BMD-341-A-R

BMD-341 module, Rev A, nRF52840-QIAA, Tape & Reel, 1000 piece multiples

BMD-341-EVAL

BMD-341-A Evaluation Kit w/ SEGGER J-Link-OB debug probe

Figure 19: Multipack label example

11.3 Ordering information

Table 14: Product ordering codes

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BMD-341 - Data sheet

12 Support and other high-risk use warning

This product is neither designed nor intended for use in a life support device or system, nor for use in
other fault-intolerant, hazardous or other environments requiring fail-safe performance, such as any
application in which the failure or malfunction of the product could lead directly or indirectly to death,
bodily injury, or physical or property damage (collectively, “high-risk environments”).

⚠ u-blox expressly disclaims any express or implied warranty of fitness for use in high-risk

environments.

The customer using this product in a high-risk environment agrees to indemnify and defend u-blox
from and against any claims and damages arising out of such use.

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BMD-341 - Data sheet

Revision

Date

Name

Comments

0.5

16-Apr-2019

Preliminary release for engineering samples.

1.0

01-Jul-2019

Updated Nordic Semiconductor links
Updated HV power output specifications
Updated RC Oscillator specifications
Updated images throughout

R03

27-Sep-2019

Document converted from Rigado to u-blox style data sheet.

Related documents

[1] u-blox Package Information Guide, Doc. No. UBX-14001652
[2] Nordic Semiconductor, nRF52840 Product Specification
[3] Nordic Semiconductor, nRF5 Software Development Kit

☞ For regular updates to u-blox documentation and to receive product change notifications, register

on our homepage (www.u-blox.com).

Revision history

UBX-19033643 - R03 Related documents Page 35 of 36

BMD-341 - Data sheet

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