Laird Connectivity BL651 Bluetooth 5.0 Module w/Integrated PCB Antenna / Bluetooth 5.0 Module w/External Antenna User Manual

Laird Technologies Bluetooth 5.0 Module w/Integrated PCB Antenna / Bluetooth 5.0 Module w/External Antenna Users Manual

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Datasheet

BL651 Series

Supports Laird Part Numbers:

 453-00005

 453-00006

 453-00005C

 453-00006C

Version 0.3

BL651 Series

Datasheet

www.lairdtech.com/bluetooth

Americas: +1-800-492-2320

Europe: +44-1628-858-940

Hong Kong: +852 2923 0610

REVISION HISTORY

Version

Date

Notes

Contributor(s)

Approver

0.x

27 June 2018

Initial Release

Andrew Chen

0.2

4 July 2018

updates

Raj Khatri

0.3

6-7August2018

Updated to close comments left

for me from review

Raj Khatri

BL651 Series

Datasheet

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Americas: +1-800-492-2320

Europe: +44-1628-858-940

Hong Kong: +852 2923 0610

CONTENTS

1 Overview and Key Features ................................................................................................................................................. 6

1.1 Features and Benefits ................................................................................................................................................. 6

1.2 Application Areas ........................................................................................................................................................ 6

2 Specification ......................................................................................................................................................................... 7

Specification Summary ................................................................................................................................................................. 7

3 Hardware Specifications ...................................................................................................................................................... 9

3.1 Block Diagram and Pin-out ......................................................................................................................................... 9

3.2 Pin Definitions ........................................................................................................................................................... 10

3.3 Electrical Specifications ............................................................................................................................................ 11

3.3.1 Absolute Maximum Ratings ................................................................................................................................ 11

3.3.2 Recommended Operating Parameters ............................................................................................................... 12

4 Power Consumption........................................................................................................................................................... 15

4.1 Power Consumption ................................................................................................................................................. 15

4.2 Peripheral Block Current Consumption .................................................................................................................... 16

5 Functional Description ....................................................................................................................................................... 17

5.1 Power Management (includes Brown-out and Power on Reset) ............................................................................. 18

5.2 Clocks and Timers ..................................................................................................................................................... 19

5.2.1 Clocks .................................................................................................................................................................. 19

5.2.2 Timers ................................................................................................................................................................. 19

5.3 Memory .................................................................................................................................................................... 19

5.4 Radio Frequency (RF) ................................................................................................................................................ 19

5.5 UART Interface .......................................................................................................................................................... 19

5.6 SPI Bus....................................................................................................................................................................... 20

5.7 I2C Interface.............................................................................................................................................................. 21

5.8 General Purpose I/O, ADC, PWM, and FREQ ............................................................................................................ 21

5.8.1 GPIO .................................................................................................................................................................... 21

5.8.2 ADC ..................................................................................................................................................................... 22

5.8.3 PWM Signal Output on SIO Pins .......................................................................................................................... 22

5.9 nRESET pin ................................................................................................................................................................ 22

5.10 Two-wire Interface SWD ........................................................................................................................................... 23

5.11 BL651 Wakeup .......................................................................................................................................................... 24

5.11.1 Waking Up BL651 from Host ............................................................................................................................... 24

5.12 Low Power Modes .................................................................................................................................................... 24

5.13 Temperature Sensor ................................................................................................................................................. 24

BL651 Series

Datasheet

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Europe: +44-1628-858-940

Hong Kong: +852 2923 0610

5.14 Security/Privacy ........................................................................................................................................................ 24

5.14.1 AES Encryption/Decryption ................................................................................................................................. 24

5.14.2 Readback Protection ........................................................................................................................................... 25

5.14.3 Elliptic Curve Cryptography................................................................................................................................. 25

5.15 Optional External 32.768 kHz Crystal ....................................................................................................................... 25

5.16 453-00005 On-board PCB Trace Antenna Characteristics ........................................................................................ 26

6 Hardware Integration Suggestions ..................................................................................................................................... 28

6.1 Circuit ........................................................................................................................................................................ 28

6.2 PCB Layout on Host PCB - General ............................................................................................................................ 29

6.3 PCB Layout on Host PCB for 453-00005 .................................................................................................................... 29

6.3.1 Antenna Keep-out on Host PCB .......................................................................................................................... 29

6.3.2 Antenna Keep-out and Proximity to Metal or Plastic ......................................................................................... 30

6.4 External Antenna Integration with 453-00006 ......................................................................................................... 30

7 Mechanical Details ............................................................................................................................................................. 31

7.1 BL651 Mechanical Details ......................................................................................................................................... 31

7.2 Host PCB Land Pattern and Antenna Keep-out for 453-00005 ................................................................................. 32

8 Application Note for Surface Mount Modules ................................................................................................................... 33

8.1 Introduction .............................................................................................................................................................. 33

8.2 Shipping .................................................................................................................................................................... 33

8.2.1 Tape and Reel Package Information ................................................................................................................... 33

8.2.2 Carton Contents .................................................................................................................................................. 34

8.2.3 Packaging Process ............................................................................................................................................... 35

8.2.4 Labeling ............................................................................................................................................................... 35

8.3 Reflow Parameters ................................................................................................................................................... 36

9 FCC and IC Regulatory ........................................................................................................................................................ 38

9.1 Antenna Information ................................................................................................................................................ 38

9.2 Power Exposure Information .................................................................................................................................... 39

9.3 OEM Responsibilities ................................................................................................................................................ 39

9.4 Federal Communication Commission Interference Statement ................................................................................ 39

9.5 Industry Canada Statement ...................................................................................................................................... 40

10 Japan (MIC) Regulatory ............................................................................................................................................. 42

10.1 Antenna Information ................................................................................................................................................ 42

11 CE Regulatory ............................................................................................................................................................ 42

11.1 Antenna Information ................................................................................................................................................ 42

11.2 EU Declarations of Conformity ................................................................................................................................. 43

BL651 Series

Datasheet

www.lairdtech.com/bluetooth

Americas: +1-800-492-2320

Europe: +44-1628-858-940

Hong Kong: +852 2923 0610

12 Ordering Information ................................................................................................................................................ 43

13 Bluetooth SIG Qualification ...................................................................................................................................... 44

13.1 Overview ................................................................................................................................................................... 44

13.2 Qualification Steps When Referencing a Laird End Product Design ......................................................................... 44

13.3 Qualification Steps When Deviating from a Laird End Product Design .................................................................... 44

14 Additional Assistance ................................................................................................................................................ 45

BL651 Series

Datasheet

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Europe: +44-1628-858-940

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1 OVERVIEW AND KEY FEATURES

Laird’s BL651 Series contains the latest Nordic nRF52810 silicon with Bluetooth 5 Low Energy, ANT and Proprietary 2.4

GHz capabilities and groundbreaking ultra-low power performance. Building on Laird’s multi-generation module

developments utilizing Nordic silicon (BL600, BL652, BL654) – now comes the latest series offering cost effective Bluetooth

5 enablement for simple BLE applications.

The BL651 series exposes all the capabilities of the Nordic nRF52810 silicon in a small, fully certified module with simple

soldering castellation for easy prototyping and mass production manufacturing. Use the Nordic SDK & SoftDevice to

deliver your BLE application. Let Laird’s innovative BL651 series and decades of expertise in Bluetooth module design speed

your product to market.

In addition, the BL651 series is 100% PCB footprint drop in compatible with the BL652 Series of modules.

1.1 Features and Benefits

 Bluetooth v5.0 – Single mode

 External or internal antennas

 Application development via Nordic SDK or Zephyr

 Compact footprint (pin compatible with BL652)

 Programmable Tx power +4 dBm to -20 dBm

 Tx whisper mode (-40 dBm)

 Rx sensitivity: -96 dBm

 Ultra-low power consumption

 Tx: 4.6 mA peak (at 0 dBm, DCDC on) – See Power

Consumption section Note 1

 Rx: 4.6 mA peak (DCDC on) – See Power Consumption

section Note 1

 System ON IDLE: 1.5 uA typical

 System OFF: 0.3 uA – See Power Consumption section

Note 4

 UART, GPIO, ADC, PWM, timers, I2C, and SPI

interfaces

 Fast time-to-market

 FCC, CE, IC, and Japan certified; Full Bluetooth

Declaration ID

 Other regulatory certifications on request (all

certifications are in process)

 No external components required

 Industrial temperature range (-40 to + 85)

1.2 Application Areas

 Beacons

 Computer peripherals

 Home healthcare

 Fitness sensors

 IoT sensors

 Home automation

Note: Figures on this page are gathered from the nRF52810 datasheet v1.2 provided by Nordic.

BL651 Series

Datasheet

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Americas: +1-800-492-2320

Europe: +44-1628-858-940

Hong Kong: +852 2923 0610

2 SPECIFICATION

Specification Summary

Table 1: BL651 Specifications

Categories

Feature

Implementation

Ultra Low Power Modes

System ON IDLE

System OFF

1.5 uA typical (See Module Specification Note 4)

300 nA (See Module Specification Note 4)

Antenna Options

Internal

PCB trace monopole antenna – on-board

part # 453-00005

External

Connection via IPEX MHF4 – part # 453-00006

See the Antenna Information sections for FCC and IC, MIC,

and CE.

Physical

Dimensions

14 mm x 10 mm x 2.1 mm

Pad Pitch: 0.75 mm

Pad Type: Plated half-moon edge pads (easy to hand solder)

Weight

<1 gram

Environmental

Operating

-40 ˚C to +85 ˚C (VCC 1.8V-3.6V)

Storage

-40 ˚C to +85 ˚C

Miscellaneous

Lead Free

Lead-free and RoHS compliant

Warranty

1-Year Warranty

MSL Level

Approvals

Bluetooth®

Full Bluetooth SIG Declaration ID (pending)

FCC/IC/CE/MIC/RCM

All BL651 Series (pending)

Module Specification Notes:

Note 1

With I2C interface selected, pull-up resistors on I2C SDA and I2C SCL must be connected externally as per I2C

standard.

Note 2

SPI interface consists of SPI MOSI, SPI MISO, and SPI CLK. SPI CS is created by using any spare SIO pin within the

customer’s application allowing multi-dropping.

Note 3

Use of the internal DCDC convertor or LDO is decided by the underlying BLE stack.

Note 4

 System OFF current for BL651 300nA (typical)

 System ON IDLE current for BL651 1.5 uA (typical)

BL651 Series

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Hong Kong: +852 2923 0610

3 HARDWARE SPECIFICATIONS

3.1 Block Diagram and Pin-out

Figure 1: BL651 Block diagram

Figure 2: BL651 module pin-out (top view)

BL651 Series

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3.2 Pin Definitions

Table 2: Pin definitions

BL651

Pin #

BL651

Pin Name

nRF52810

QFN Name

nRF52810

QFN Pin#

BL652 Equivalent

Pin Name

Notes

Comment

GND

P0.24/SPI_MISO

P0.24

SIO_24/SPI_MISO

Pin Definitions

Note 1

P0.23/SPI_MOSI

P0.23

SIO_23/SPI_MOSI

Pin Definitions

Note 1

P0.22

SIO_22

SWDIO

Pin Definitions

Note 2

SWDCLK

Pin Definitions

Note 2

nRESET/ P0.21

P0.21/nRESET

nRESET

Pin Definitions

Note 3

System Reset

(Active Low)

P0.20

SIO_20/SFLASH_MOSI

P0.18

SIO_18

P0.16

SIO_16/SFLASH_CLK

P0.14

SIO_14/SFLASH_MISO

P0.12

SIO_12/SFLASH_CS

P0.11

SIO_11

P0.10

NFC2/SIO_10

P0.09

NFC1/SIO_09

GND

P0.08/UART_RX

P0.08

SIO_08/UART_RX

Pin Definitions

Note 1

P0.07/UART_CTS

P0.07

SIO_07/UART_CTS

Pin Definitions

Note 1

P0.06/UART_TX

P0.06

SIO_06/UART_TX

Pin Definitions

Note 1

P0.05/UART_RTS/AIN

P0.05/AIN3

SIO_05/UART_RTS/AIN3

Pin Definitions

Note 1

P0.04/AIN2

SIO_04/AIN2

P0.03/AIN1

SIO_03/AIN1

P0.02/AIN0

SIO_02/AIN0

P0.01/XL2

SIO_01/XL2

Pin Definitions

Note 4

P0.00/XL1

SIO_00/XL1

Pin Definitions

Note 4

VDD_nRF

1.7V to 3.6V

GND

P0.13

SIO_13/nAutoRUN

P0.15

SIO_15

P0.17

SIO_17

P0.19

SIO_19

P0.31/AIN7

SIO_31/AIN7

P0.30/AIN6

SIO_30/AIN6

P0.29/AIN5

SIO_29/AIN5

BL651 Series

Datasheet

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BL651

Pin #

BL651

Pin Name

nRF52810

QFN Name

nRF52810

QFN Pin#

BL652 Equivalent

Pin Name

Notes

Comment

P0.28/AIN4

SIO_28/AIN4

P0.27/I2C_SCL

P0.27

SIO_27/I2C_SCL

Pin Definitions

Note 1

P0.26/I2C_SDA

P0.26

SIO_26/I2C_SDA

Pin Definitions

Note 1

P0.25/SPI_CLK

P0.25

SIO_25/SPI_CLK

Pin Definitions

Note 1

GND

Pin Definition Notes:

Note 1

The BL651 module PIO pins to which UART, I2C, and SPI interfaces are mapped, are those found on the Nordic

development board as well as the BL652 development board. You can bring out UART, I2C, and SPI on any pins

allowed by Nordic within the user developed application.

Note 2

SWD (two-wire interface), pin 5 (SWDIO) and pin 6 (SWDCLK).

We recommend that you use SWD (2-wire interface) to handle customer developed BL651 module firmware

upgrades. You MUST wire out the SWD (2-wire interface) on your host design (see Figure 4, where four lines

should be wired out, namely SWDIO, SWDCLK, GND and VCC).

Note 3

Pull the nRESET pin (pin 7) low for a minimum of 100 milliseconds to reset the BL651.

Note 4

Not required for BL651 module normal operation. Nordic SDK examples by default assume that the external

32.768 kHz crystal is connected. You must modify the Nordic SDK example to reflect if the external 32.768 kHz

crystal is fitted or not. The on-chip 32.768 kHz RC oscillator provides the standard accuracy of ±500 ppm, with

calibration required at least every eight seconds to stay within ±500 ppm.

BL651 also allows the option of connecting an external higher accuracy (±20 ppm) 32.768 kHz crystal to the

BL651 pins SIO_01/XL2 (pin 24) and SIO_00/XL1 (pin 25). This provides higher accuracy protocol timing and

helps with radio power consumption in the SYSTEM ON IDLE or SYSTEM OFF modes by reducing the time that

the Rx window must be open.

3.3 Electrical Specifications

3.3.1 Absolute Maximum Ratings

Absolute maximum ratings for supply voltage and voltages on digital and analogue pins of the module are listed in Table 3.

Exceeding these values causes permanent damage.

Table 3: Maximum current ratings

Parameter

Min

Max

Unit

Voltage at VDD_nRF pin

-0.3

+3.9

(Maximum Ratings Note 1)

Voltage at GND pin

Voltage at GPIO pin (at VDD_nRF≤3.6V)

-0.3

VDD_nRF +0.3

Voltage at GPIO pin (at VDD_nRF≥3.6V)

-0.3

3.9

Radio RF input level

dBm

Environmental

Storage temperature

-40

+85

ºC

MSL (Moisture Sensitivity Level)

BL651 Series

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Parameter

Min

Max

Unit

ESD (as per EN301-489)

Conductive

Air Coupling

Flash Memory (Endurance)

(Maximum Ratings Note 2)

10000

Write/erase cycles

Flash Memory (Retention)

10 years at 40°C

Maximum Ratings Notes:

Note 1

The absolute maximum rating for VCC pin (max) is 3.9V for the BL651.

Note 2

Standard wear levelling techniques can be used to increase the lifetime of the module.

3.3.2 Recommended Operating Parameters

Table 4: Power supply operating parameters

Parameter

Min

Typ

Max

Unit

VDD_nRF (independent of DCDC)

(Recommended Operating Parameters Note 1 )

1.7

3.0

3.6

VCC Maximum ripple or noise

(Recommended Operating Parameters Note 2 )

VCC rise time (0 to 1.7V)

(Recommended Operating Parameters Note 3 )

Operating Temperature Range

-40

+85

ºC

Recommended Operating Parameters Notes:

Note 1

4.7 uF internal to module on VCC.

Note 2

This is the maximum VCC ripple or noise (at any frequency) that does not disturb the radio.

Note 3

The on-board power-on reset circuitry may not function properly for rise times outside the noted interval.

Table 5: Signal levels for digital IO interfaces

Parameter

Min

Typ

Max

Unit

VIH Input high voltage

0.7 VDD_nRF

VDD_nRF

VIL Input low voltage

VSS

0.3 x VDD_nRF

VOH Output high voltage

(standard drive, 0.5 mA, VDD_nRF≥1.7V)

(high-drive, 3 mA, VDD_nRF≥1.7V)

(high-drive, 5 mA, VDD_nRF≥2.7V)

VDD_nRF -0.4

VDD_nRF

VOL Output low voltage

(standard drive, 0.5 mA, VDD_nRF≥1.7V)

(high-drive, 3 mA, VDD_nRF≥1.7V)

(high-drive, 5 mA, VDD_nRF≥2.7V)

VSS

VSS+0.4

VOL Current at VSS+0.4V, output set low

(standard drive, 0.5 mA, VDD_nRF≥1.7V)

BL651 Series

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Parameter

Min

Typ

Max

Unit

(high-drive, 3 mA, VDD_nRF≥1.7V)

(high-drive, 5 mA, VDD_nRF≥2.7V)

VOL Current at VDD_nRF -0.4, output set high

(standard drive, 0.5mA, VDD_nRF≥1.7V)

(high-drive, 3mA, VDD_nRF≥1.7V)

(high-drive, 5mA, VDD_nRF≥2.7V)

Pull up resistance

kΩ

Pull down resistance

kΩ

Pad capacitance

Table 6: AIN (ADC) specification

Parameter

Min

Typ

Max

Unit

ADC Internal reference voltage

-1.5%

0.6 V

+1.5%

ADC pin input internal selectable scaling

4, 2, 1, 1/2, 1/3, 1/4, 1/5 1/6

scaling

ADC input pin (AIN) voltage maximum without damaging ADC

w.r.t

(Recommended Operating Parameters Note 1 )

VCC Prescaling

0V-VDD_nRF 4, 2, 1, ½ , 1/3, ¼ , 1/5, 1/6

VDD_nRF + 0.3

Configurable

8-bit mode

10-bit mode

12-bit mode

bits

Acquisition Time, source resistance ≤10 kΩ Acquisition Time,

source resistance ≤40 kΩ

Acquisition Time, source resistance ≤100 kΩ

Acquisition Time, source resistance ≤200 kΩ

Acquisition Time, source resistance ≤400 kΩ

Acquisition Time, source resistance ≤800 kΩ

Conversion Time3

ADC input impedance (during operation)

(Recommended Operating Parameters Note 3

Input Resistance

Sample and hold capacitance at maximum gain

2.5

MOhm

Recommended Operating Parameters Notes:

Note 1

Stay within internal 0.6 V reference voltage with given pre-scaling on AIN pin and do not violate ADC maximum

input voltage (for damage) for a given VCC, e.g. If VCC is 3.6V, you can only expose AIN pin to VDD+0.3 V.

Note 2

Through customer firmware the resolution (8-bit, 10-bit, or 12-bit mode or oversample 14-bit) and acquisition

time is configurable. The sampling frequency is limited by the sum of sampling time and acquisition time. The

maximum sampling time is 2us. For acquisition time of 3us the total conversion time is 5us, which makes

maximum sampling frequency of 1/5us = 200 kHz. Similarly, if acquisition time of 40us chosen, then the conversion

time is 42us and the maximum sampling frequency is 1/42us = 23.8 kHz

Note 3

ADC input impedance is estimated mean impedance of the ADC (AIN) pins.

BL651 Series

Datasheet

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Americas: +1-800-492-2320

Europe: +44-1628-858-940

Hong Kong: +852 2923 0610

BL651 Series

Datasheet

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Americas: +1-800-492-2320

Europe: +44-1628-858-940

Hong Kong: +852 2923 0610

4 POWER CONSUMPTION

VCC_nRF of 3.0 V with internal (to chipset) LDO ON or with internal (to chipset) DCDC ON (see Power Consumption Note 1 )

and 25ºC.

4.1 Power Consumption

Table 7: Power consumption

Parameter

Min

Typ

Max

Unit

Active mode ‘peak’ current (Power Consumption Note 1 )

(Advertising or Connection)

Tx only run peak current @ Txpwr = +4 dBm

Tx only run peak current @ Txpwr = 0 dBm

Tx only run peak current @ Txpwr = -4 dBm

Tx only run peak current @ Txpwr = -8 dBm

Tx only run peak current @ Txpwr = -12 dBm

Tx only run peak current @ Txpwr = -16 dBm

Tx only run peak current @ Txpwr = -20 dBm

Tx only run peak current @ Txpwr = -40 dBm

With DCDC [with LDO]

7.0 [15.4]

4.6 [10.1]

3.6 [7.8]

3.2 [6.8]

2.9 [6.2]

2.7 [5.7]

2.5 [5.4]

2.1 [4.3]

Active Mode (Power Consumption Note 1 )

Rx only ‘peak’ current

4.6 [10.0]

Ultra-low Power Mode 1 (Power Consumption Note 2)

System ON IDLE + 24kB RAM retention, wake on any

event + LFRC

1.5

Ultra-low Power Mode 2 (Power Consumption Note 3)

System OFF (no RAM retention, wake on any event)

300

Active Mode Average current

Advertising Average Current draw

Max, with advertising interval (min) 20 mS

Min, with advertising interval (max)10240 mS

Connection Average Current draw

Max, with connection interval (min) 7.5 mS

Min, with connection interval (max) 4000 mS

(Power Cons. Note 4 )

dadf

(Power Cons. Note 4 )

Power Consumption Notes:

Note 1

This is for Peak Radio Current only, but there is additional current due to the MCU. The use of the internal

DCDC convertor or LDO is decided by the underlying BLE stack.

Note 2

BL651: System ON IDLE current is 1.5 uA typical. System ON IDLE is entered automatically through a command

in the customer-developed firmware. In System ON IDLE, all enabled peripherals remain on and may re-awaken

the chip. Depending on active peripherals, current consumption ranges from ~1.5 μA to 270 uA (when UART is

ON). See individual peripherals current consumption data in the Peripheral Block Current Consumption section.

Through customers FW development, functionality to detect GPIO change with no current consumption cost, it

is possible to close the UART and get to the 1.5uA current consumption regime and still detect incoming data

and be woken up so that the UART can be re-opened at expense of losing that first character.

The BL651 System ON IDLE current consists of the below nRF52810 blocks:

BL651 Series

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 nRF52 System ON IDLE current (no RAM retention) (1.2 uA) – This is the base current of the CPU

 LFRC (0.6 uA) and RTC (0.1uA) running as well as 24 k RAM retention (0.2 uA) – This adds to the total of 1.5

uA typical.

Note 3

In System OFF, everything is disabled and the only wake-up sources are reset and changes on GPIO on which

sense is enabled. The current consumption is ~300 nA typical in BL651.

 Hardware reset to come out of System OFF.

 Can come out from System OFF to System ON IDLE through GPIO signal through the reset vector.

Note 4

Average current consumption depends on several factors (including Tx power, VCC, accuracy of 32 MHz and

32.768 kHz), all peripherals off (UART OFF after radio event), slave latency of 0 (in a connection). With these

factors fixed, the largest variable is the advertising or connection interval set.

Advertising Interval range:

 20 milliseconds to 10240 milliseconds (10485759.375 mS in BT5.0) in multiples of 0.625 milliseconds.

For an advertising event:

 The minimum average current consumption is when the advertising interval is large 10240 milliseconds

(10485759.375 mS - in BT5.0) although this may cause long discover times (for the advertising event) by

scanners

 The maximum average current consumption is when the advertising interval is small 20 mS

Other factors that are also related to average current consumption include the advertising payload bytes in

each advertising packet and whether it’s continuously advertising or periodically advertising.

Connection Interval range (for a peripheral device):

 7.5 milliseconds to 4000 milliseconds in multiples of 1.25 milliseconds.

For a connection event (for a peripheral device):

 The minimum average current consumption is when the connection interval is large 4000 milliseconds

 The maximum average current consumption is with the shortest connection interval of 7.5 ms; no slave

latency.

Other factors that are also related to average current consumption include:

 Number of packets per connection interval with each packet payload size

 An inaccurate 32.768 kHz master clock accuracy would increase the average current consumption.

4.2 Peripheral Block Current Consumption

The following values are calculated for a typical operating voltage of 3V.

Table 8: UART power consumption

Parameter

Min

Typ

Max

Unit

UART Run current @ 115200 bps

UART Run current @ 1200 bps

Idle current for UART (no activity)

UART Baud rate

1.2

1000

kbps

Table 9: Power consumption

Parameter

Min

Typ

Max

Unit

SPI Master Run current @ 2 Mbps

BL651 Series

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SPI Master Run current @ 8 Mbps

SPI bit rate

0.125

Mbps

Table 10: I2C power consumption

Parameter

Min

Typ

Max

Unit

I2C Run current @ 100 kbps

I2C Run current @ 400 kbps

I2C Bit rate

100

400

kbps

Table 11: ADC power consumption

Parameter

Min

Typ

Max

Unit

ADC current during conversion

700

The above current consumption is for the given peripheral only; to operate that peripheral requires some other internal

blocks which consume base current. This base current is consumed when the UART, SPI, I2C, or ADC is opened (operated).

For asynchronous interface like the UART (asynchronous as the other end can communicate at any time), the UART on the

BL651 must be kept open (by a command in customers application), resulting in the base current consumption penalty.

For a synchronous interface like the I2C or SPI, the interface can be closed and opened only when needed, resulting in

current saving (no base current consumption penalty). There’s a similar argument for ADC (open ADC when needed).

5 FUNCTIONAL DESCRIPTION

The BL651 BLE (Bluetooth Low Energy) module is a self-contained product and requires only power and a user’s application

to implement full BLE functionality. The integrated, high performance PCB trace antenna combined with the RF and base-

band circuitry provides the BLE wireless link, and any of the GPIO lines provide the OEM’s chosen interface connection to the

sensors.

BL651 module hardware is functionally capable as the nRF52810 chipset used in the module design and Table 12 shows the

nRF52810 features list from Nordic Documentation http://infocenter.nordicsemi.com/index.jsp. For details, refer to the

nRF52810 datasheet

http://infocenter.nordicsemi.com/topic/com.nordic.infocenter.nrf52/dita/nrf52/chips/nrf52810.html?cp=2_2

Table 12: nRF52810 features

Features

nRF52810

CPU

Cortex M4 (no FPU)

64 MHz

Memory

192 kB flash

24 kB RAM

No cache

Easy DMA MAXCNT bit length

PDM

PWM

Radio

SAADC

SPIM

SPIS

TWIM

TWIS

UARTE

Crypto

AES engine

BL651 Series

Datasheet

www.lairdtech.com/bluetooth

Americas: +1-800-492-2320

Europe: +44-1628-858-940

Hong Kong: +852 2923 0610

Features

nRF52810

Clock

32 MHz crystal (onboard BL651)

64 MHz on-chip PLL

32.768 kHz crystal (optional and external to

BL651)

32.768 kHz on-chip RC

External 32.768 kHz clock

Power Management

One stage LDO and DCDC

Digital Interfaces

One SPI master and slave

One TWI master and slave

One UARTE

One PWM

QDEC

PDM

Analog Interfaces

64-level Analog Comp

8-channel 12-bit ADC

True Random Number Generator

Timers

Three 32-bit 16-MHz timers

Two 32.768 kHz RTC

Watchdog timer (32.768 kHz)

Other Interfaces

Four GPIOTEs

SWI debug interface

PPI

20 programmable channels

12 fixed channels

Six channel groups

Other Features

BPROT (Block Protection)

Six SWI

Two EGU

Power Fail

Power fail comparator and brownout

GPIO

Up to 32 pins

Eight GPIOTEs channels

To provide the widest scope for integration, a variety of physical host interfaces/sensors are provided. The major BL651

series module functional blocks described in the following section.

5.1 Power Management (includes Brown-out and Power on Reset)

Power management features:

 System ON IDLE and System OFF modes

 Open/Close peripherals (UART, SPI, I2C, GPIO’s, ADC). Peripherals consume current when open; each peripheral can be

individually closed to save power consumption

 Use of the internal DCDC convertor or LDO is decided by the underlying BLE stack

 VCC voltage to be read (through the internal ADC)

 Pin wake-up system from deep sleep

Power supply features:

 Supervisor hardware to manage power during reset, brownout, or power fail

 1.7V to 3.6V supply range using internal DCDC convertor or LDO decided by the underlying BLE stack

BL651 Series

Datasheet

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Europe: +44-1628-858-940

Hong Kong: +852 2923 0610

5.2 Clocks and Timers

5.2.1 Clocks

The integrated high accuracy 32 MHz (±10 ppm) crystal oscillator helps with radio operation and reducing power

consumption in the active modes.

The integrated on-chip 32.768 kHz RC oscillator (±500 ppm) provides protocol timing and helps with radio power

consumption in the system StandByDoze and Deep Sleep modes by reducing the time that the RX window must be open.

To keep the on-chip 32.768 kHz RC oscillator within ±500 ppm (which is needed to run the BLE stack) accuracy, the RC

oscillator must be calibrated (which takes 16-17 milliseconds) regularly. The default calibration interval is at least eight

seconds which is enough to keep within ±500 ppm. The calibration interval ranges from 0.25 seconds to 31.75 seconds (in

multiples of 0.25 seconds).

5.2.2 Timers

 Regular Timer – There are five built-in timers (regular timers) derived from a single RTC clock; the resolution of the

regular timer is 976 microseconds.

 Tick Timer (Counter) – A 31-bit free running counter that increments every (one) millisecond. The resolution of this

counter is 488 microseconds.

5.3 Memory

The nRF52810 has 192 kBytes Flash and 24 kB RAM.

5.4 Radio Frequency (RF)

 2402–2480 MHz Bluetooth Low Energy radio BT5.0 (1 Mbps and 2 Mbps over-the-air data rate)

 Tx output power of +4 dBm programmable to -20 dBm in steps of 4 dB and further down -40 dBm

 Receiver (with integrated channel filters) to achieve maximum sensitivity -96 dBm @ 1 Mbps BLE and 93 dBm @ 2

Mbps BLE.

 RF conducted interface available in the following two ways:

– 453-00005: RF connected to on-board PCB trace antenna

– 453-00006: RF connected to on-board IPEX MH4 RF connector

 Antenna options:

– Integrated monopole PCB trace antenna on the 453-00005

– External dipole antenna connected with to IPEX MH4 RF connector on the 453-00006

 Received Signal Strength Indicator (RSSI):

– RSSI accuracy (valid range -90 dBm to -20 dBm) is ±2 dB typical

– RSSI resolution 1 dB typical

– Sample period 0.25 us

5.5 UART Interface

The Universal Asynchronous Receiver/Transmitter offers fast, full-duplex, asynchronous serial communication with built-in

flow control support (UART_CTS, UART_RTS) in hardware up to one Mbps baud.

UART_TX, UART_RX, UART_RTS, and UART_CTS form a conventional asynchronous serial data port with handshaking. The

interface is designed to operate correctly when connected to other UART devices such as the 16550A. The signaling levels

are nominal 0 V and 3.3 V (tracks VCC) and are inverted with respect to the signaling on an RS232 compliant cable.

Two-way hardware flow control is implemented by UART_RTS and UART_CTS. UART_RTS is an output and UART_CTS is an

input. Both are active low.

BL651 Series

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These signals operate according to normal industry convention. UART_RX, UART_TX, UART_CTS, UART_RTS are all 3.3 V level

logic (tracks VCC). For example, when RX and TX are idle, they sit at 3.3 V. Conversely, for handshaking pins CTS, RTS at 0 V is

treated as an assertion.

The module communicates with the customer application using the following signals:

 Port/TxD of the application sends data to the module’s UART_RX signal line

 Port/RxD of the application receives data from the module’s UART_TX signal line

Figure 3: UART signals

Note: The BL651 serial module output is at 3.3V CMOS logic levels (tracks VCC). Level conversion must be added to

interface with an RS-232 level compliant interface.

Some serial implementations link CTS and RTS to remove the need for handshaking. We do not recommend linking CTS and

RTS other than for testing and prototyping. If these pins are linked and the host sends data at the point that the BL651 de-

asserts its RTS signal, then there is significant risk that internal receive buffers will overflow. This could lead to an internal

processor crash which would drop the connection and may require a power cycle to reset the module. We recommend that

the correct CTS/RTS handshaking protocol be adhered to for proper operation.

The BL651 module PIO pins to which the UART interface is mapped are those found on the Nordic development board as

well as the BL652 development board. You can bring out UART on any pins allowed by Nordic within the user application.

Table 13: UART interface

BL651

Signal Name

BL651

Pin Number

I/O

Comments

P0.06 / UART_Tx

P0.06 (alternative function UART_Tx) is an output, set high (in customers application via Nordic

SDK)

P0.08 / UART_Rx

P0.08 (alternative function UART_Rx) is an input, set with internal pull-up (in customers

application via Nordic SDK)

P0.05 / UART_RTS

P0.05 (alternative function UART_RTS) is an output, set low (in customers application via

Nordic SDK)

P0.07 / UART_CTS

P0.07 (alternative function UART_CTS) is an input, set with internal pull-down (in customers

application via Nordic SDK)

5.6 SPI Bus

The SPI interface is an alternate function on GPIO pins.

The module can be a master device (or slave device) that uses terminals SPI_MOSI, SPI_MISO, and SPI_CLK. SPI_CS is

implemented using any spare SIO digital output pins to allow for multi-dropping. Each multidrop SPI slave device requires a

unique and dedicated SPI_CS line.

The SPI interface enables full duplex synchronous communication between devices. It supports a 3-wire (SPI_MOSI,

SPI_MISO, SPI_SCK) bi-directional bus with fast data transfers to and from multiple slaves. Individual chip select signals are

BL651

BL651 Series

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necessary for each of the slave devices attached to a bus, but control of these is left to the application through use of SIO

signals. I/O data is double-buffered.

The SPI peripheral supports SPI mode 0, 1, 2, and 3.

Table 14: SPI interfaces

BL651 Signal Name

BL651 Pin No

I/O

Comments

P0.23/SPI_MOSI

This interface is an alternate function.

P0.24/SPI_MISO

P0.25/SPI_CLK

Any_P0.xx/SPI_CS

SPI_CS is implemented using any spare SIO digital output pins to

allow for multi-dropping. On Laird BL652 devboard, SIO_22 (pin 4)

is used as SPI_CS.

The BL651 module PIO pins to which the SPI interface is mapped are those found on the Nordic development board as well

as the BL652 development board. You can bring out SPI on any pins allowed by Nordic within the user application.

5.7 I2C Interface

The I2C interface is an alternate function on GPIO pins.

The two-wire interface can interface a bi-directional wired-OR bus with two lines (SCL, SDA) and has master/slave topology.

Data rates of 100 kbps and 400 kbps are supported along with 250 kbps for master only. The interface is capable of clock

stretching.

An I2C interface allows multiple masters and slaves to communicate over a shared wired-OR type bus consisting of two lines

which normally sit at VCC. The BL651 module can only be configured as an I2C master or slave. The SCL is the clock line

which is always sourced by the master; and SDA is a bi-directional data line which can be driven by any device on the bus.

IMPORTANT: It is essential to remember that pull-up resistors on both SCL and SDA lines are not provided in the

module and MUST be provided external to the module.

Table 15: I2C interface

BL651 Signal Name

BL651 Pin No

I/O

Comments

P0.26/I2C_SDA

I/O

This interface is an alternate function on each pin

P0.27/I2C_SCL

I/O

The BL651 module PIO pins to which the I2C interface is mapped are those found on the Nordic development board as well

as the BL652 dev board. You can bring out I2C on any pins allowed by Nordic within the user application.

5.8 General Purpose I/O, ADC, PWM, and FREQ

5.8.1 GPIO

The 19 GPIO pins are user-configured features:

 Input/output direction

 Output drive strength (standard drive 0.5 mA or high drive 3 or 5 mA –depends on VDD_nRF)

 Internal pull-up and pull-down resistors (13 K Ohms typical) or no pull-up/down

 Wake-up from high or low-level triggers on all pins

 Input buffer disconnect

BL651 Series

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 Analog input (for selected pins)

5.8.2 ADC

The ADC is an alternate function on dedicated GPIO pins.

The BL651 provides access to 8-channel 8/10/12-bit successive approximation ADC in one-shot mode. This enables sampling

up to eight external signals through a front-end MUX. The ADC has configurable input and reference pre-scaling and sample

resolution (8, 10, and 12 bit).

5.8.2.1 Analog Interface (ADC)

Table 16: Analog interface

BL651 Signal Name

BL651 Pin

Comments

P0.05/UART_RTS/AIN3 –

Analog Input

This interface is an alternate function on each pin

Configurable 8-, 10-, 12-bit resolution

Configurable voltage scaling 4, 2, 1/1, 1/3, 1/3, 1/4, 1/5, 1/6

Configurable acquisition time 3 uS, 5 uS, 10 uS, 15 uS, 20 uS, 40 uS

Full scale input range (VCC)

P0.04/AIN2 – Analog Input

P0.03/AIN1 – Analog Input

P0.02/AIN0 – Analog Input

P0.31/AIN7 – Analog Input

P0.30/AIN6 – Analog Input

P0.29/AIN5 – Analog Input

P0.28/AIN4 – Analog Input

5.8.3 PWM Signal Output on SIO Pins

The PWM output is an alternate function on GPIO pins.

The PWM output signal has a frequency and duty cycle property. Frequency is adjustable (up to one MHz) and the duty cycle

can be set over a range from 0% to 100%

PWM output signal has a frequency and duty cycle property. PWM output is generated using dedicated hardware in the

chipset. There is a trade-off between PWM output frequency and resolution.

For example:

 PWM output frequency of 500 kHz (2 uS) results in resolution of 1:2

 PWM output frequency of 100 kHz (10 uS) results in resolution of 1:10

 PWM output frequency of 10 kHz (100 uS) results in resolution of 1:100

 PWM output frequency of 1 kHz (1000 uS) results in resolution of 1:1000

5.9 nRESET pin

Table 17: nRESET pin

BL651 Signal

Name

BL651

Number

I/O

Comments

nRESET

BL651 HW reset (active low). Pull the nRESET pin low for minimum 100 mS in order

for the BL651 to reset.

BL651 Series

Datasheet

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Europe: +44-1628-858-940

Hong Kong: +852 2923 0610

5.10 Two-wire Interface SWD

You can use the two-wire (SWD) interface for application programming and debugging.

Table 18: Two-wire interface SWD

BL651 Signal Name

BL651

Pin Number

I/O

Comments

SWDIO

I/O

Internal pull-up resistor

SWDCLK

Internal pull-down resistor

There is also the following JTAG connector which allows on-board JTAG J-link programmer signals to be routed off the

development board. The only requirement is that you should use the following JTAG connector on the host PCB.

Table 19 shows the SWD connector MPN:

Table 19: SWD connector MPN

Reference

Part

Description and MPN (Manufacturers Part Number)

JP1

FTSH-105

Header, 1.27mm, SMD, 10-way, FTSH-105-01-L-DV Samtech

Note: Reference on the BL652 development board schematic (Figure 4) shows the DVK-BL652 development schematic

wiring only for the SWD connector and the BL651 module SWD pins.

P0.18

GND

SWDIO_BLE

VCC_BLE

P0.18

SWDCLK_BLE

GND

P0.23/SPI_MOSI

P0.17 30

P0.15 29

P0.13 28

P0.22

GND

P0.10

14 P0.09

P0.25/SPI_CLK 38

nRESET/P0.21

VDD_nRF

P0.16

P0.24/SPI_MISO

GND

SWDIO

5SWDCLK

P0.20

8P0.18

P0.14

11 P0.12

12 P0.11

P0.08/UART_RX

17 P0.07/UART_CTS

18 P0.06/UART_TX

19 P0.05/UART_RTS/AIN3

20 P0.04/AIN2

21 P0.03/AIN1

22 P0.02/AIN0

23 P0.01/XL2

24 P0.00/XL1

P0.19 31

P0.31/AIN7 32

P0.30/AIN6 33

P0.29/AIN5 34

P0.28/AIN4 35

P0.27/I2C_SCL 36

P0.26/I2C_SDA 37

GND 39

GND

VCC_BLE

GND

nRESET_BLE

0.1uF,16V

GND

BL651 Series

Datasheet

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Europe: +44-1628-858-940

Hong Kong: +852 2923 0610

Figure 4: BL652 development board schematic

We recommend that you use SWD (2-wire interface) to handle customer developed BL651 module firmware upgrades. You

MUST wire out the SWD (2-wire interface) on your host design (see Figure 4, where four lines should be wired out, namely

SWDIO, SWDCLK, GND and VCC).

P0.18 is a trace output (called SWO, Serial Wire Output) and is not necessary for programming the BL651 over the SWD

interface.

nReset_BLE is not necessary for programming the BL651 over the SWD interface.

5.11 BL651 Wakeup

5.11.1 Waking Up BL651 from Host

Wake the BL651 from the host using wake-up pins (any PIO pin). You may configure the BL651’s wakeup pins in the

customers application to do any of the following:

 Wake up when signal is low

 Wake up when signal is high

 Wake up when signal changes

5.12 Low Power Modes

The BL651 has three power modes: Run (Active), Standby Doze (SYSTEM ON IDLE), and Deep Sleep (SYSTEM OFF).

The module wakes from Standby Doze via any interrupt (such as a received character on the UART Rx line). If the module

receives a UART character from either the external UART or the radio, it wakes up.

Deep sleep is the lowest power mode. Once awakened, the system goes through a system reset.

5.13 Temperature Sensor

The on-silicon temperature sensor has a temperature range greater than or equal to the operating temperature of the

device with accuracy ±5°C. Resolution is 0.25°C .

5.14 Security/Privacy

5.14.1 AES Encryption/Decryption

Exposed via Nordic SDK functions, refer to Nordic documentation.

GND

SWDIO

VCC_IO

SWDCLK

JP1

PIN HEADER,1.27mm 2X5P

1 2

3 4

5 6

7 8

910

PIN HEADER,2.54mm 1X3P

SWDCLK_BLE

nRESET_BLE

P0.18

SWDIO_BLE

BL651 Series

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5.14.2 Readback Protection

Exposed via Nordic SDK functions, refer to Nordic documentation.

The BL651 supports readback protection capability that disallows the reading of the memory on the nRF52810 using a JTAG

interface.

5.14.3 Elliptic Curve Cryptography

Exposed via Nordic SDK functions, refer to Nordic documentation.

The BL651 offers a range of functions for generating public/private keypair, calculating a shared secret, as well as generating

an authenticated hash.

5.15 Optional External 32.768 kHz Crystal

This is not required for normal BL651 module operation. Nordic SDK examples by default assume that he external 32.768

kHz crystal is connected. The customer must modify the Nordic SDK example to reflect whether or not the external 32.768

kHz crystal is fitted.

The BL651 uses the on-chip 32.76 kHz RC oscillator (LFCLK) by default (which has an accuracy of ±500 ppm); this requires

regulator calibration (at least every eight seconds) to within ±500 ppm.

You can connect an optional external high accuracy (±20 ppm) 32.768 kHz crystal to the BL651pins, P0.01/XL2 (pin 24) and

P0.00/XL1 (pin 25) to provide improved protocol timing and to help with radio power consumption in the system standby

doze/deep sleep modes by reducing the time that the RX window needs to be open. 錯誤! 找不到參照來源。 compares the

current consumption difference between RC and crystal oscillator.

Table 20: Current consumption difference between BL651 on-chip RC 32.76 kHz oscillator and optional external crystal (32.768 kHz)

based oscillator

BL651 On-chip 32.768 kHz RC Oscillator

(±500 ppm) LFRC

Optional External Higher Accuracy

(±20 ppm) 32.768 kHz

Crystal-based Oscillator XO

Current Consumption of

32.768 kHz Block

0.6 uA

0.25 uA

Standby Doze

Current (System ON

IDLE+24k RAM

retention+RTC+LFRC)

1.5 uA

2.0 uA

Calibration

Calibration is required regularly (default eight seconds interval)

Calibration takes 16-17 ms; with DCDC used, the total charge of a

calibration event is 7.4 uC.

The average current consumed by the calibration depends on the

calibration interval and can be calculated using the following formula:

CAL_charge/CAL_interval

The lowest calibration interval (0.25 seconds) provides an average

current of (DCDC enabled):

7.4uC / 0.25s = 29.6uA

To get the 500-ppm accuracy, the BLE stack specification states that a

calibration interval of eight seconds is enough. This gives an average

current of:

7.4uC/8s = 0.93 uA

Added to the LFRC run current and Standby Doze (IDLE) base current

shown above results in a total average current of:

LFRC + CAL = 1.5 + 0.93 = 2.43uA

Not applicable

Total

2.43 uA

1.45 uA

BL651 Series

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Summary

 Low current consumption

 Accuracy 500 ppm

 Lowest current consumption

 Needs external crystal

 High accuracy (depends on the crystal, usually 20

ppm)

Table 21: Optional external 32.768 kHz crystal specification

Optional external 32.768kHz crystal

Min

Typ

Max

Crystal Frequency

32.768 kHz

Frequency tolerance requirement of BLE stack

±250 ppm

Load Capacitance

12.5 pF

Shunt Capacitance

2 pF

Equivalent series resistance

100 kOhm

Drive level

1 uW

Input capacitance on XL1 and XL2 pads

4 pF

Run current for 32.768 kHz crystal based oscillator

0.25 uA

Startup time for 32.768 kHz crystal based oscillator

0.25 seconds

Peak to peak amplitude for external low swing clock input signal

must not be outside supply rails

200 mV

1000 mV

Be sure to tune the load capacitors on the board design to optimize frequency accuracy (at room temperature) so it matches

that of the same crystal standalone, Drive Level (so crystal operated within safe limits) oscillation margin (Rneg is at least 3 to

5 times ESR) over the operating temperature range.

5.16 453-00005 On-board PCB Trace Antenna Characteristics

The 453-00005 on-board PCB trace monopole antenna radiated performance depends on the host PCB layout.

A Laird internal BL651 development board was used for BL651 development and antenna performance evaluation. To obtain

similar performance, follow guidelines in section PCB Layout on Host PCB for 453-00005 to allow the on-board PCB trace

antenna to radiate and reduce proximity effects due to nearby host PCB GND copper or metal covers.

Table 22: Antenna radiation performance

Unit in dBi @2.44GHz

XY-plane

XZ-plane

YZ-plane

Peak

Avg

Peak

Avg

Peak

Avg

453-00005 module on-board PCB Trace antenna

-0.21

-3.95

-1.69

-8.1

-4.06

-6.4

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◆XY-plane

Figure 5: Trace antenna performance

◆XZ-plane

◆YZ-plane

Figure 6: 453-00005 on-board PCB Trace antenna performance (Antenna Gain, efficiency and S11 (whilst 453-00005 module on DVK-

BL652-xx development board)

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6 HARDWARE INTEGRATION SUGGESTIONS

6.1 Circuit

The BL651 is easy to integrate, requiring no external components on your board apart from those which you require for

development and in your end application.

The following are suggestions for your design for the best performance and functionality.

Checklist (for Schematic):

 VCC pins

External power source should be within the operating range, rise time and noise/ripple specification of the BL651. Add

decoupling capacitors for filtering the external source. Power-on reset circuitry within BL651 series module

incorporates brown-out detector, thus simplifying your power supply design. Upon application of power, the internal

power-on reset ensures that the module starts correctly.

 VCC and coin-cell operation

With built-in DCDC (operating range 1.7V to 3.6V), reduces the peak current required from a coin-cell, making it easier

to use with coin-cell.

 AIN (ADC) and GPIO pin IO voltage levels

BL651 GPIO voltage levels are at VCC. Ensure input voltage levels into GPIO pins are at VCC also (if VCC source is a

battery whose voltage will drop). Ensure ADC pin maximum input voltage for damage is not violated.

 AIN (ADC) impedance and external voltage divider setup

If you need to measure with ADC a voltage higher than 3.6V, you can connect a high impedance voltage divider to

lower the voltage to the ADC input pin.

 SWD

We recommend that use SWD (2-wire interface) to handle customer developed BL651 module firmware upgrades. You

MUST wire out the JTAG (2-wire interface) on your host design (see Figure 4, where four lines should be wired out,

namely SWDIO, SWDCLK, GND and VCC).

 UART

Add connector to allow interfacing with UART via PC (UART–RS232 or UART-USB). Laird recommends flow control to

prevent UART data loss.

 I2C

It is essential to remember that pull-up resistors on both I2C_SCL and I2C_SDA lines are not provided in the BL651

module and MUST be provided external to the module as per I2C standard.

 SPI

Implement SPI chip select using any unused GPIO pin within customers application then SPI_CS is controlled from

customers application allowing multi-dropping.

 GPIO pin direction

BL651 modules shipped from production are un-programmed. Remember to change the direction GPIO pin (in

customer developed application) if that particular pin is wired to a device that expects to be driven by the BL651 GPIO

pin configured as an output. Also, these GPIO pins if used as inputs have the internal pull-up or pull-down resistor. To

avoid floating inputs which can cause current consumption in low power modes (e.g. System ON IDLE) to drift with time;

customer can enable the PULL-UP or PULL-DOWN through their application.

Note: Internal pull-up, pull down will take current from VCC.

 nRESET pin (active low)

Hardware reset. Wire out to push button or drive by host.

By default module is out of reset when power applied to VCC pins.

 Optional External 32.768kHz crystal

BL651 Series

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Europe: +44-1628-858-940

Hong Kong: +852 2923 0610

If the optional external 32.768kHz crystal is needed then use a crystal that meets specification. Nordic SDK examples

by default assume external 32.768kHz crystal is connected. Customer must modify Nordic SDK example to reflect if

external 32.768kHz crystal is fitted or not.

6.2 PCB Layout on Host PCB - General

Checklist (for PCB):

 You MUST locate the BL651 module close to the edge of PCB (mandatory for 453-00005 for on-board PCB trace

antenna to radiate properly).

 Use solid GND plane on inner layer (for best EMC and RF performance).

 All module GND pins MUST be connected to host PCB GND.

 Place GND vias as close to module GND pads as possible.

 Unused PCB area on surface layer can flooded with copper but place GND vias regularly to connect copper flood to

inner GND plane. If GND flood copper underside the module then connect with GND vias to inner GND plane.

 Route traces to avoid noise being picked up on VCC supply and AIN (analogue) and SIO (digital) traces.

 Ensure no exposed copper is on the underside of the module (refer to Figure 10 land pattern of BL652 development

board).

6.3 PCB Layout on Host PCB for 453-00005

6.3.1 Antenna Keep-out on Host PCB

The 453-00005 has an integrated PCB trace antenna and its performance is sensitive to host PCB. It is critical to locate the

453-00005 on the edge of the host PCB (or corner) to allow the antenna to radiate properly. Refer to guidelines in the PCB

land pattern and antenna keep-out area for 453-00005 section. Some of those guidelines repeated below.

 Ensure there is no copper in the antenna keep-out area on any layers of the host PCB. Keep all mounting hardware and

metal clear of the area to allow proper antenna radiation.

 For best antenna performance, place the 453-00005 module on the edge of the host PCB, preferably the edge center.

 The BL651 development board (not commercially available) has the 453-00005 module on the edge of the board

(preferably the edge center). The antenna keep-out area is defined by the BL651 development board which was used

for module development and antenna performance evaluation is shown in Figure 7, where the antenna keep-out area

is ~4.95mm wide, 25.65 mm long; with PCB dielectric (no copper) height 0.85 mm sitting under the 453-00005 PCB

trace antenna.

 The 453-00005 PCB trace antenna is tuned when 453-00005 module is sitting on development board (host PCB) with

size of 120 mm x 93 mm.

 A different host PCB thickness dielectric will have a small effect on antenna.

 The antenna-keep-out defined in the Host PCB Land Pattern and Antenna Keep-out for 453-00005 section.

 Host PCB land pattern and antenna keep-out for the BL651 applies when the 453-00005 is placed in the edge of the

host PCB, preferably the edge center. Figure 7 shows an example.

BL651 Series

Datasheet

www.lairdtech.com/bluetooth

Americas: +1-800-492-2320

Europe: +44-1628-858-940

Hong Kong: +852 2923 0610

Figure 7: Antenna keep-out area (shown in red), corner of the BL651 development board for 453-00005 module.

Antenna Keep-out Notes:

Note 1

The BL651 module is placed on the edge of the host PCB, preferably edge center of the host PCB.

Note 2

Copper cut-away on all layers in the Antenna Keep-out area under 453-00005 on host PCB.

6.3.2 Antenna Keep-out and Proximity to Metal or Plastic

Checklist (for metal /plastic enclosure):

 Minimum safe distance for metals without seriously compromising the antenna (tuning) is 40 mm top/bottom and 30

mm left or right.

 Metal close to the 453-00005 PCB trace monopole antenna (bottom, top, left, right, any direction) will have

degradation on the antenna performance. The amount of that degradation is entirely system dependent, meaning you

must perform some testing with your host application.

 Any metal closer than 20 mm begins to significantly degrade performance (S11, gain, radiation efficiency).

 It is best that you test the range with a mock-up (or actual prototype) of the product to assess effects of enclosure

height (and materials, whether metal or plastic) and host PCB size (ground plane size).

6.4 External Antenna Integration with 453-00006

Please refer to the regulatory sections for FCC, IC, CE, and Japan for details of use of BL651 (453-00006) with external

antennas in each regulatory region.

The BL651 family is designed to operate with the following external antennas (with a maximum gain of

2.0 dBi). The required antenna impedance is 50 ohms. See Table 23. External antennas improve radiation efficiency.

BL651 module

Antenna Keep-out

BL651 Series

Datasheet

www.lairdtech.com/bluetooth

Americas: +1-800-492-2320

Europe: +44-1628-858-940

Hong Kong: +852 2923 0610

Table 23: External antennas for the BL651

Manufacturer

Model

Laird

Part Number

Type

Connector

Peak Gain

2400-2480 MHz

2400-2500 MHz

Laird

NanoBlue

EBL2400A1-10MH4L

PCB Dipole

IPEX MHF4

2 dBi

Laird

FlexPIFA

001-0022

PCB Dipole

IPEX MHF4

2 dBi

Mag.Layers

EDA-8709-2G4C1-B27-CY

0600-00057

Dipole

IPEX MHF4

2 dBi

Laird

mFlexPIFA

EFA2400A3S-10MH4L

PIFA

IPEX MHF4

2 dBI

Note 1: Integral RF co-axial cable with length 100 ±5 mm and MHF4 compatible connector.

These antennas are available through Laird, Mouser, or Digikey.

7 MECHANICAL DETAILS

7.1 BL651 Mechanical Details

Figure 8: BL651 mechanical drawings

BL651 Series

Datasheet

www.lairdtech.com/bluetooth

Americas: +1-800-492-2320

Europe: +44-1628-858-940

Hong Kong: +852 2923 0610

7.2 Host PCB Land Pattern and Antenna Keep-out for 453-00005

Figure 9: Land pattern and Keep-out for 453-00005

All dimensions are in millimeters (mm).

Host PCB Land Pattern and Antenna Keep-out for 453-00005 Notes:

Note 1

Ensure there is no copper in the antenna keep out area on any layers of the host PCB. Also keep all mounting

hardware or any metal clear of the area (Refer to 6.3.2) to reduce effects of proximity detuning the antenna

and to help antenna radiate properly.

Note 2

For the best on-board antenna performance, the module 453-00005 MUST be placed on the edge of the host

PCB and preferably in the edge centre of host PCB, the antenna keep out area is extended (see Note 4).

Note 3

BL651 development board has 453-00005 placed on the edge of the PCB board (and not in corner) for that the

Antenna keep out area is extended down to the corner of the development board, see the PCB Layout on Host

PCB for 453-00005 section. This was used for module development and antenna performance evaluation.

Note 4

Ensure that there is no exposed copper under the module on the host PCB.

Note 5

You may modify the PCB land pattern dimensions based on their experience and/or process capability.

BL651 Series

Datasheet

www.lairdtech.com/bluetooth

Americas: +1-800-492-2320

Europe: +44-1628-858-940

Hong Kong: +852 2923 0610

8 APPLICATION NOTE FOR SURFACE MOUNT MODULES

8.1 Introduction

Laird Technologies’ surface mount modules are designed to conform to all major manufacturing guidelines. This Application

Note section is considered a living document and will be updated as new information is presented.

The modules are designed to meet the needs of several commercial and industrial applications. They are easy to

manufacture and conform to current automated manufacturing processes.

8.2 Shipping

8.2.1 Tape and Reel Package Information

Note: The Laird part numbers for BL651 modules – 453-00005 and 453-00006 are for Tape and Reel packaging in 1k unit

reels. The addition of a ‘C’ at the end of the part number denotes Cut Tape option.

Figure 10: Reel specifications

BL651 Series

Datasheet

www.lairdtech.com/bluetooth

Americas: +1-800-492-2320

Europe: +44-1628-858-940

Hong Kong: +852 2923 0610

Figure 11: Tape specifications

There are 1000 pieces of BL651 modules taped in a reel (and packaged in a pizza box) and five boxes per carton (5000

modules per carton). Reel, boxes, and carton are labeled with the appropriate labels. See Carton Contents for more

information.

8.2.2 Carton Contents

The following are the contents of the carton shipped for the BL651 modules.

PCBA: 5000 pcs/ctn

BL651 Shipping Tape

BL651 Series

Datasheet

www.lairdtech.com/bluetooth

Americas: +1-800-492-2320

Europe: +44-1628-858-940

Hong Kong: +852 2923 0610

8.2.3 Packaging Process

Figure 13: BL651 packaging process

8.2.4 Labeling

The following labels are located on the antistatic bag:

Figure 14: Antistatic bag labels

Figure 12: Carton contents for the BL651

M/N: 453-00005

QTY: 1000 PCS

BL651 Series

Datasheet

www.lairdtech.com/bluetooth

Americas: +1-800-492-2320

Europe: +44-1628-858-940

Hong Kong: +852 2923 0610

The following package label is located on both sides of the master carton:

Figure 15: Master carton package label

The following is the packing slip label:

Figure 16: Packing slip label

8.3 Reflow Parameters

Prior to any reflow, it is important to ensure the modules were packaged to prevent moisture absorption. New packages

contain desiccate (to absorb moisture) and a humidity indicator card to display the level maintained during storage and

shipment. If directed to bake units on the card, see Table 24 and follow instructions specified by IPC/JEDEC J-STD-033. A copy

of this standard is available from the JEDEC website: http://www.jedec.org/sites/default/files/docs/jstd033b01.pdf

Note: The shipping tray cannot be heated above 65°C. If baking is required at the higher temperatures displayed in in

Table 24, the modules must be removed from the shipping tray.

Any modules not manufactured before exceeding their floor life should be re-packaged with fresh desiccate and a new

humidity indicator card. Floor life for MSL (Moisture Sensitivity Level) 4 devices is 168 hours in ambient environment

30°C/60%RH.

BL651 Series

Datasheet

www.lairdtech.com/bluetooth

Americas: +1-800-492-2320

Europe: +44-1628-858-940

Hong Kong: +852 2923 0610

Table 24: Recommended baking times and temperatures

MSL

125°C

Baking Temp.

90°C/≤ 5%RH

Baking Temp.

40°C/ ≤ 5%RH

Baking Temp.

Saturated

@ 30°C/85%

Floor Life Limit

+ 72 hours

@ 30°C/60%

Saturated

@ 30°C/85%

Floor Life Limit

+ 72 hours

@ 30°C/60%

Saturated

@ 30°C/85%

Floor Life Limit

+ 72 hours @

30°C/60%

9 hours

7 hours

33 hours

23 hours

13 days

9 days

Laird surface mount modules are designed to be easily manufactured, including reflow soldering to a PCB. Ultimately it is the

responsibility of the customer to choose the appropriate solder paste and to ensure oven temperatures during reflow meet

the requirements of the solder paste. Laird surface mount modules conform to J-STD-020D1 standards for reflow

temperatures.

Important: During reflow, modules should not be above 260° and not for more than 30 seconds.

Figure 17: Recommended reflow temperature

Temperatures should not exceed the minimums or maximums presented in Table 25.

Table 25: Recommended maximum and minimum temperatures

Specification

Value

Unit

Temperature Inc./Dec. Rate (max)

1~3

°C / Sec

Temperature Decrease rate (goal)

2-4

°C / Sec

Soak Temp Increase rate (goal)

.5 - 1

°C / Sec

Flux Soak Period (Min)

Sec

Flux Soak Period (Max)

120

Sec

Flux Soak Temp (Min)

150

°C

Flux Soak Temp (max)

190

°C

Time Above Liquidous (max)

Sec

Time Above Liquidous (min)

Sec

Time In Target Reflow Range (goal)

Sec

BL651 Series

Datasheet

www.lairdtech.com/bluetooth

Americas: +1-800-492-2320

Europe: +44-1628-858-940

Hong Kong: +852 2923 0610

Specification

Value

Unit

Time At Absolute Peak (max)

Sec

Liquidous Temperature (SAC305)

218

°C

Lower Target Reflow Temperature

240

°C

Upper Target Reflow Temperature

250

°C

Absolute Peak Temperature

260

°C

9 FCC AND IC REGULATORY

Model

US/FCC

Canada/IC

453-00005

SQGBL651

3147A-BL651

453-00006

SQGBL651

3147A-BL651

The BL651 Series hold full modular approvals. The OEM must follow the regulatory guidelines and warnings listed below to

inherit the modular approval.

Part #

Form Factor

Tx Outputs

Antenna

453-00005

Surface Mount

4 dBm

PCB Trace

453-00006

Surface Mount

4 dBm

IPEX MHF4

*Last two slots "XX" in Part # are used for production firmware release changes. Can be values 01-99, aa-zz

9.1 Antenna Information

The BL651 family has been designed to operate with the antennas listed below with a maximum gain of 2 dBi. The required

antenna impedance is 50 ohms.

Manufacturer

Model

Laird

Part Number

Type

Connector

Peak Gain

2400-2480 MHz

2400-2500 MHz

Laird

NanoBlue

EBL2400A1-10MH4L

PCB Dipole

IPEX MHF4

2 dBi

Laird

FlexPIFA

001-0022

PCB Dipole

IPEX MHF4

2 dBi

Mag.Layers

EDA-8709-2G4C1-B27-CY

0600-00057

Dipole

IPEX MHF4

2 dBi

Laird

mFlexPIFA

EFA2400A3S-10MH4L

PIFA

IPEX MHF4

2 dBI

Laird

BL651 PCB printed antenna

Printed PCB

N/A

0 dBi

Note: The OEM is free to choose another vendor’s antenna of like type and equal or lesser gain as an antenna appearing

in the table and still maintain compliance. Reference FCC Part 15.204(c)(4) for further information on this topic.

To reduce potential radio interference to other users, the antenna type and gain should be chosen so that the

equivalent isotropic radiated power (EIRP) is not more than that permitted for successful communication.

BL651 Series

Datasheet

www.lairdtech.com/bluetooth

Americas: +1-800-492-2320

Europe: +44-1628-858-940

Hong Kong: +852 2923 0610

9.2 Power Exposure Information

Federal Communication Commission (FCC) Radiation Exposure Statement:

This EUT is in compliance with SAR for general population/uncontrolled exposure limits in ANSI/IEEE C95.1-1999 and had

been tested in accordance with the measurement methods and procedures specified in OET Bulletin 65 Supplement C.

This transceiver must not be co-located or operating in conjunction with any other antenna, transmitter, or external

amplifiers. Further testing / evaluation of the end product will be required if the OEM’s device violates any of these

requirements.

The BL651 is fully approved for mobile and portable applications.

9.3 OEM Responsibilities

WARNING: The OEM must ensure that FCC labelling requirements are met. This includes a clearly visible label on the

outside of the OEM enclosure specifying the appropriate Laird Technology FCC identifier for this product.

Contains FCC ID: SQGBL651 IC: 3147A-BL651

If the size of the end product is larger than 8x10cm, then the following FCC part 15.19 statement has to also

be available on visible on outside of device:

The enclosed 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

Label and text information should be in a size of type large enough to be readily legible, consistent with the dimensions of

the equipment and the label. However, the type size for the text is not required to be larger than eight point.

CAUTION: The OEM should have their device which incorporates the BL651 tested by a qualified test house to verify

compliance with FCC Part 15 Subpart B limits for unintentional radiators.

CAUTION: Any changes or modifications not expressly approved by Laird Technology could void the user’s authority to

operate the equipment.

9.4 Federal Communication Commission Interference Statement

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the

FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential

installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in

accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee

that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or

television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct

the interference by one of the following measures:

 Reorient or relocate the receiving antenna.

 Increase the separation between the equipment and receiver.

 Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

 Consult the dealer or an experienced radio/TV technician for help.

FCC Caution: Any changes or modifications not expressly approved by the party responsible for compliance could void the

user's authority to operate this equipment.

BL651 Series

Datasheet

www.lairdtech.com/bluetooth

Americas: +1-800-492-2320

Europe: +44-1628-858-940

Hong Kong: +852 2923 0610

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.

IMPORTANT NOTE

FCC Radiation Exposure Statement

The product complies with the US portable RF exposure limit set forth for an uncontrolled environment and are safe for

intended operation as described in this manual. The further RF exposure reduction can be achieved if the product can be

kept as far as possible from the user body or set the device to lower output power if such function is available.

This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.

This device is intended only for OEM integrators under the following condition:

1. The transmitter module may not be co-located with any other transmitter or antenna,

As long as the condition above is met, further transmitter testing is not required. However, the OEM integrator is still

responsible for testing their end-product for any additional compliance requirements required with this module installed

IMPORTANT NOTE

In the event that these conditions cannot be met (for example certain laptop configurations or co-location with another

transmitter), then the FCC authorization is no longer considered valid and the FCC ID cannot be used on the final product. In

these circumstances, the OEM integrator is responsible for re-evaluating the end product (including the transmitter) and

obtaining a separate FCC authorization.

End Product Labeling

The final end product must be labeled in a visible area with the following: “Contains FCC ID: SQGBL651”.

Manual Information to the End User

The OEM integrator must be aware not to provide information to the end user regarding how to install or remove this RF

module in the user’s manual of the end product which integrates this module.

The end user manual shall include all required regulatory information/warning as show in this manual.

9.5 Industry Canada Statement

This device contains licence-exempt transmitter(s)/receiver(s) that comply with Innovation, Science and Economic

Development Canada’s licence-exempt RSS(s). Operation is subject to the following two conditions:

(1) This device may not cause interference

(2) This device must accept any interference, including interference that may cause undesired operation of the device

Cet appareil contient des émetteurs / récepteurs exempts de licence qui sont conformes au (x) RSS (s) exemptés de licence

d'Innovation, Sciences et Développement économique Canada. L'opération est soumise aux deux conditions suivantes:

(1) Cet appareil ne doit pas causer d'interférences

(2) Cet appareil doit accepter toute interférence, y compris les interférences pouvant provoquer un fonctionnement

indésirable de l'appareil

Radiation Exposure Statement

The product complies with the Canada portable RF exposure limit set forth for an uncontrolled environment and are safe

for intended operation as described in this manual. The further RF exposure reduction can be achieved if the product can

be kept as far as possible from the user body or set the device to lower output power if such function is available.

BL651 Series

Datasheet

www.lairdtech.com/bluetooth

Americas: +1-800-492-2320

Europe: +44-1628-858-940

Hong Kong: +852 2923 0610

Déclaration d'exposition aux radiations:

Le produit est conforme aux limites d'exposition pour les appareils portables RF pour les Etats-Unis et le Canada établies

pour un environnement non contrôlé. Le produit est sûr pour un fonctionnement tel que décrit dans ce manuel. La

réduction aux expositions RF peut être augmentée si l'appareil peut être conservé aussi loin que possible du corps de

l'utilisateur ou que le dispositif est réglé sur la puissance de sortie la plus faible si une telle fonction est disponible.

This device is intended only for OEM integrators under the following conditions:

(1) The transmitter module may not be co-located with any other transmitter or antenna.

As long as 1 condition above are met, further transmitter test will not be required. However, the OEM integrator is still

responsible for testing their end-product for any additional compliance requirements required with this module installed.

Cet appareil est conçu uniquement pour les intégrateurs OEM dans les conditions suivantes:

(1) Le module émetteur peut ne pas être coïmplanté avec un autre émetteur ou antenne.

Tant que les 1 condition ci-dessus sont remplies, des essais supplémentaires sur l'émetteur ne seront pas nécessaires.

Toutefois, l'intégrateur OEM est toujours responsable des essais sur son produit final pour toutes exigences de conformité

supplémentaires requis pour ce module installé.

IMPORTANT NOTE:

In the event that these conditions cannot be met (for example certain laptop configurations or co-location with another

transmitter), then the Canada authorization is no longer considered valid and the IC ID cannot be used on the final product.

In these circumstances, the OEM integrator will be responsible for re-evaluating the end product (including the transmitter)

and obtaining a separate Canada authorization.

NOTE IMPORTANTE:

Dans le cas où ces conditions ne peuvent être satisfaites (par exemple pour certaines configurations d'ordinateur portable

ou de certaines co-localisation avec un autre émetteur), l'autorisation du Canada n'est plus considéré comme valide et l'ID

IC ne peut pas être utilisé sur le produit final. Dans ces circonstances, l'intégrateur OEM sera chargé de réévaluer le produit

final (y compris l'émetteur) et l'obtention d'une autorisation distincte au Canada.

End Product Labeling

The final end product must be labeled in a visible area with the following: “Contains IC: 3147A-BL651”.

Plaque signalétique du produit final

Le produit final doit être étiqueté dans un endroit visible avec l'inscription suivante: "Contient des IC: 3147A-BL651".

Manual Information to the End User

The OEM integrator has to be aware not to provide information to the end user regarding how to install or remove this RF

module in the user’s manual of the end product which integrates this module.

The end user manual shall include all required regulatory information/warning as show in this manual.

Manuel d'information à l'utilisateur final

L'intégrateur OEM doit être conscient de ne pas fournir des informations à l'utilisateur final quant à la façon d'installer ou

de supprimer ce module RF dans le manuel de l'utilisateur du produit final qui intègre ce module.

Le manuel de l'utilisateur final doit inclure toutes les informations réglementaires requises et avertissements comme

indiqué dans ce manuel.

BL651 Series

Datasheet

www.lairdtech.com/bluetooth

Americas: +1-800-492-2320

Europe: +44-1628-858-940

Hong Kong: +852 2923 0610

10 JAPAN (MIC) REGULATORY

The BL651 is approved for use in the Japanese market. The part numbers listed below hold WW type certification. Refer to

ARIB-STD-T66 for further guidance on OEM’s responsibilities.

Model

Certificate Number

Antenna

453-00005

201-180356

PCB Trace

453-00006

201-180356

IPEX MHF4

10.1 Antenna Information

The BL651 was tested with antennas listed below. The OEM can choose a different manufacturers antenna but must make

sure it is of same type and that the gain is lesser than or equal to the antenna that is approved for use.

Manufacturer

Model

Laird

Part Number

Type

Connector

Peak Gain

2400-2480

MHz

2400-2500 MHz

Laird

NanoBlue

EBL2400A1-10MH4L

PCB Dipole

IPEX MHF4

2 dBi

Laird

FlexPIFA

001-0022

PCB Dipole

IPEX MHF4

2 dBi

Mag.Layers

EDA-8709-2G4C1-B27-CY

0600-00057

Dipole

IPEX MHF4

2 dBi

Laird

mFlexPIFA

EFA2400A3S-10MH4L

PIFA

IPEX MHF4

2 dBI

Laird

BL654-SA PCB printed antenna

Printed PCB

N/A

0 dBi

11 CE REGULATORY

The BL651 series have been tested for compliance with relevant standards for the EU market. The 453-00006 module was

tested with a 2 dBi antenna. The OEM can operate the 453-00006 module with any other type of antenna but must ensure

that the gain does not exceed 2 dBi to maintain the Laird approval.

The OEM should consult with a qualified test house before entering their device into an EU member country to make sure all

regulatory requirements have been met for their complete device.

Reference the Declaration of Conformities listed below for a full list of the standards that the modules were tested to. Test

reports are available upon request.

11.1 Antenna Information

The antennas listed below were tested for use with the BL651. For CE mark countries, the OEM is free to use any

manufacturer’s antenna and type of antenna if the gain is less than or equal to the highest gain approved for use (2 dBi).

Contact a Laird representative for more information regarding adding antennas.

Manufacturer

Model

Laird

Part Number

Type

Connector

Peak Gain

2400-2480

MHz

2400-2500 MHz

Laird

NanoBlue

EBL2400A1-10MH4L

PCB Dipole

IPEX MHF4

2 dBi

Laird

FlexPIFA

001-0022

PCB Dipole

IPEX MHF4

2 dBi

Mag.Layers

EDA-8709-2G4C1-B27-CY

0600-00057

Dipole

IPEX MHF4

2 dBi

Laird

mFlexPIFA

EFA2400A3S-10MH4L

PIFA

IPEX MHF4

2 dBI

Laird

BL654-SA PCB printed antenna

Printed PCB

N/A

0 dBi

BL651 Series

Datasheet

www.lairdtech.com/bluetooth

Americas: +1-800-492-2320

Europe: +44-1628-858-940

Hong Kong: +852 2923 0610

Note: The BL651 module internal BLE chipset IC pins are rated 4 kV (ESD HBM). ESD can find its way through the

external JTAG connector (if used on the customer’s design), if discharge is applied directly. Customer should

ensure adequate protection against ESD on their end product design (using the BL651 module) to meet relevant

ESD standard (for CE, this is EN301-489).

11.2 EU Declarations of Conformity

Manufacturer

Laird

Products

453-00005, 453-00006

Product Description

Bluetooth v5.0 Module Series

EU Directives

2014/53/EU – Radio Equipment Directive (RED)

Reference standards used for presumption of conformity:

Article Number

Requirement

Reference standard(s)

3.1a

Low voltage equipment safety

EN 60950-1:2006 +A11:2009 +A1:2010 +A12:2011 +A2:2013

RF Exposure

EN 62311:2008

3.1b

Protection requirements –

Electromagnetic compatibility

EN 301 489-1 v2.2.0 (2017-03)

EN 301 489-17 v3.2.0 (2017-03)

3.2

Means of the efficient use of the

radio frequency spectrum (ERM)

EN 300 328 v2.1.1 (2016-11)

Wide-band transmission

systems

Declaration:

We, Laird, declare under our sole responsibility that the essential radio test suites have been carried out and that the above

product to which this declaration relates is in conformity with all the applicable essential requirements of Article 3 of the EU

Radio Equipment Directive 2014/53/EU, when used for its intended purpose.

Place of Issue:

Laird

W66N220 Commerce Court, Cedarburg, WI 53012 USA

tel: +1-262-375-4400 fax: +1-262-364-2649

Date of Issue:

July 2018

Name of Authorized Person:

Thomas T Smith, Director of EMC Compliance

Signature of Authorized Person:

12 ORDERING INFORMATION

453-00005

BL651 Series - Bluetooth v5 Module, Int. Antenna (Nordic nRF52810) – Tape & Reel

453-00006

BL651 Series - Bluetooth v5 Module, Ext. Antenna (Nordic nRF52810) – Tape & Reel

453-00005C

BL651 Series - Bluetooth v5 Module, Int. Antenna (Nordic nRF52810)– Cut Tape

453-00006C

BL651 Series - Bluetooth v5 Module, Ext. Antenna (Nordic nRF52810)– Cut Tape

BL651 Series

Datasheet

www.lairdtech.com/bluetooth

Americas: +1-800-492-2320

Europe: +44-1628-858-940

Hong Kong: +852 2923 0610

13 BLUETOOTH SIG QUALIFICATION

13.1 Overview

The BL651 series is listed on the Bluetooth SIG website as a qualified End Product.

Design

Name

Owner

Declaration ID

QD ID

Link to listing on the SIG website

BL651

Series

Laird

Technologies

TBC

It is a mandatory requirement of the Bluetooth Special Interest Group (SIG) that every product implementing Bluetooth

technology has a Declaration ID. Every Bluetooth design is required to go through the qualification process, even when

referencing a Bluetooth Design that already has its own Declaration ID. The Qualification Process requires each company to

registered as a member of the Bluetooth SIG – www.bluetooth.org

The following link provides a link to the Bluetooth Registration page: https://www.bluetooth.org/login/register/

For each Bluetooth Design, it is necessary to purchase a Declaration ID. This can be done before starting the new

qualification, either through invoicing or credit card payment. The fees for the Declaration ID will depend on your

membership status, please refer to the following webpage:

https://www.bluetooth.org/en-us/test-qualification/qualification-overview/fees

For a detailed procedure of how to obtain a new Declaration ID for your design, please refer to the following SIG document:

https://www.bluetooth.org/DocMan/handlers/DownloadDoc.ashx?doc_id=283698&vId=317486

13.2 Qualification Steps When Referencing a Laird End Product Design

To start a listing, go to: https://www.bluetooth.org/tpg/QLI_SDoc.cfm

In step 1, select the option, Reference a Qualified Design and enter TBC in the End Product table entry. You can then select

your pre-paid Declaration ID from the drop down menu or go to the Purchase Declaration ID page, (please note that unless

the Declaration ID is pre-paid or purchased with a credit card, it will not be possible to proceed until the SIG invoice is paid.

Once all the relevant sections of step 1 are finished, complete steps 2, 3, and 4 as described in the help document. Your new

Design will be listed on the SIG website and you can print your Certificate and DoC.

For further information, please refer to the following training material:

https://www.bluetooth.org/en-us/test-qualification/qualification-overview/listing-process-updates

Note:

13.3 Qualification Steps When Deviating from a Laird End Product Design

If you wish to deviate from the standard End Product design listed under D031950, the qualification process follows the

Traditional Project route, creating a new design. When creating a new design, it is necessary to complete the full

qualification listing process and also maintain a compliance folder for the new design.

The BL651 design under D031950 incorporates the following components:

Listing

reference

Design

Name

Core

Spec

Version

BL651 Series

Datasheet

www.lairdtech.com/bluetooth

Americas: +1-800-492-2320

Europe: +44-1628-858-940

Hong Kong: +852 2923 0610

In the future, Nordic may list updated versions of these components and it is possible to use them in your new design. Please

check with Nordic to make sure these software components are compatible with the nRF52 hardware (D029601).

If your design is based on un-modified BL651 hardware it is possible use the following process;

2. Reference the existing RF-PHY test report from the BL651 listing.

3. Combine the relevant Nordic Link Layer (LL) – check QDID with Nordic.

4. Combine in a Host Component (covering L2CAP, GAP, ATT, GATT, SM) - check QDID with Nordic.

5. Test any standard SIG profiles that are supported in the design (customs profiles are exempt).

Figure 18: Scope of the qualification for an End Product Design

The first step is to generate a project on the TPG (Test Plan Generator) system. This determines which test cases apply to

demonstrate compliance with the Bluetooth Test Specifications. If you are combining pre-tested and qualified components

in your design and they are within their three-year listing period, you are not required to re-test those layers covered by

these components.

If the design incorporates any standard SIG LE profiles (such as Heart Rate Profile), it is necessary to test these profiles using

PTS or other tools where permitted; the results are added to the compliance folder.

You are required to upload your test declaration and test reports (where applicable) and then complete the final listing steps

on the SIG website. Remember to purchase your Declaration ID before you start the qualification process, as it’s impossible

to complete the listing without it.

14 ADDITIONAL ASSISTANCE

Please contact your local sales representative or our support team for further assistance:

Laird Technologies Connectivity Products Business Unit

Support Centre: http://ews-support.lairdtech.com

Email: wireless.support@lairdtech.com

End

Product

Laird RF-PHY

Nordic LL

Host

Layers

Profiles

BL651 Series

Datasheet

www.lairdtech.com/bluetooth

Americas: +1-800-492-2320

Europe: +44-1628-858-940

Hong Kong: +852 2923 0610

Phone: Americas: +1-800-492-2320

Europe: +44-1628-858-940

Hong Kong: +852 2923 0610

Web: http://www.lairdtech.com/bluetooth

specifications are subject to change without notice. Responsibility for the use and application of Laird materials or products rests with the end user since

Laird and its agents cannot be aware of all potential uses. Laird makes no warranties as to non-infringement nor as to the fitness, merchantability, or

sustainability of any Laird materials or products for any specific or general uses. Laird, Laird Technologies, Inc., or any of its affiliates or agents shall not be

liable for incidental or consequential damages of any kind. All Laird products are sold pursuant to the Laird Terms and Conditions of Sale in effect from time

to time, a copy of which will be furnished upon request. When used as a tradename herein, Laird means Laird PLC or one or more subsidiaries of Laird PLC.

Laird™, Laird Technologies™, corresponding logos, and other marks are trademarks or registered trademarks of Laird. Other marks may be the property of

third parties. Nothing herein provides a license under any Laird or any third party intellectual property right.

Laird Connectivity BL651 Bluetooth 5.0 Module w/Integrated PCB Antenna / Bluetooth 5.0 Module w/External Antenna User Manual

Laird Technologies Bluetooth 5.0 Module w/Integrated PCB Antenna / Bluetooth 5.0 Module w/External Antenna Users Manual

Users Manual

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