BlueNRG-M2

Datasheet

Very low power application processor module for Bluetooth® low energy v5.2

Features
• Bluetooth v5.2 certified
– Supports master and slave modes
– Multiple roles supported simultaneously
– LE data packet length extension
• Embedded ST BlueNRG-2 BLE SoC
– High performance, ultra-low power Cortex-M0 32-bit based core
– Programmable embedded 256 kB Flash
– 24 kB embedded RAM with data retention
– Up to +8 dBm available output power
– Down to -88 dBm Rx sensitivity
– Up to 96 dB link budget with excellent link reliability
• Embedded BALF-NRG-02D3 integrated matched balun with harmonic filter
• Interfaces:
– 1 x UART, 1 x I2C, 1xSPI, 14 x GPIO, 2 x multifunction timer, 10-bit
ADC, watchdog and RTC, DMA controller, PDM stream processor, SWD
debug interface
• On-board chip antenna (BLUENRG-M2SA) or PCB antenna (BLUENRG-
M2SP)
• Small form factor: 11.5 mm x13.5 mm
Product status link
• Complemented with Bluetooth low energy protocol stack library (GAP, GATT,
BlueNRG-M2 SM, L2CAP, LL)
• AES secutity co-processor
Product label • Bluetooth low energy SDK with a wide range of available profiles
• Certification
– CE qualified
– FCC, IC modular approval certified
– TYPE qualified
– BQE qualified
– WPC certification
– SRRC certification (BlueNRG-M2SA)
– KCC cerification
• Pre-programmed UART bootloader
• Operating supply voltage: from 1.7 to 3.6 V
• Operating temperature range: -40 °C to 85 °C

Applications
• Internet of Things
• Smart Home
• Building and industrial automation
• Smart Lighting
• Remote and access control
• Fitness, wellness and sports
• Consumer medical

DS13053 - Rev 8 - March 2024 www.st.com

For further information contact your local STMicroelectronics sales office.
 BlueNRG-M2

• Security and proximity

• Assisted living
• PC and smart phone peripherals

Description
The BlueNRG-M2 is a Bluetooth® low energy system-on-chip application processor certified module, certified
under BT specifications v5.2 and BQE qualified. The BlueNRG-M2 module supports multiple roles simultaneously
and can act at the same time as Bluetooth master and slave device. The BlueNRG-M2 is based on the
BlueNRG-2 system-on-chip and entire Bluetooth low energy stack and protocols are embedded into module. The
BlueNRG-M2 module provides a complete RF platform in a tiny form factor. Radio, embedded antenna and high
frequency oscillators are integrated to offer a certified solution to optimize the time-to-market of the final
applications. The BlueNRG-M2 can be powered directly with a pair of AAA batteries or any power source from 1.7
to 3.6 V.

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 BlueNRG-M2
General description

1 General description

The BlueNRG-M2 is a Bluetooth low energy application processor modules certified under Bluetooth® v5.2
specifications.
The BlueNRG-M2 module has been designed around the ST BlueNRG-2 SoC where its Cortex-M0 core can
execute both Bluetooth protocols and customer application. Optimized memory architecture includes 256 kB of
Flash memory and 24 kB of ultra-low-leakage RAM (with full data retention). A complete power-optimized
Bluetooth stack library provides:
• Master, slave, multiple role support
• GAP: central, peripheral, observer or broadcaster roles
• Simultaneous advertising and scanning
• Capability of being slave of up to two masters simultaneously
• ATT/GATT: client and server
• SM: privacy, authentication and authorization
• L2CAP
• Link Layer: AES-128 encryption and decryption
In the BLUENRG-M2SA module both 32 MHz and 32 kHz crystal oscillators are available. It has been designed to
leverage the BlueNRG-2 integrated DC-DC step down converter in order to achieve the best power consumption
in active mode. It also embeds a high efficiency chip antenna. It can be configured to support both application
processor (host-less) and network processor (hosted) modes.
Being based on the BlueNRG-2 SoC, the BlueNRG-M2 module leverages all tools and documentation of its
ecosystem: development kit, application notes, user manuals, design notes & Tips. A wide set of sample
programs are also available in C source code.
The BlueNRG-M2 module has a wide set of peripherals available for customer applications (1 x UART interface, 1
x SPI interface, 1 x I2C interface, 14 GPIO, 2 x multifunction timer, 10-bit ADC, watchdog & RTC, DMA controller,
PDM stream processor).
The BlueNRG-M2 module enables wireless connectivity into electronic devices, not requiring any RF experience
or expertise for integration into the final product. The BlueNRG-M2 module provides a complete RF application
platform in a tiny form factor (11.5 x 13.5 x 2.0 mm) and being a certified solution optimizes the time to market of
the final applications.
The BlueNRG-M2 module allows applications to meet the tight advisable peak current requirements imposed with
the use of standard coin cell batteries. Optimized results are obtained when the embedded high-efficiency DC-DC
step-down converter is used (BLUENRG-M2SA). Instead, for the BLUENRG-M2SP the best performance in terms
of power consumption is achieved using a 1.8 V DC power supply. The BlueNRG-M2 can be powered directly
with a standard 3 V coin cell battery as with a pair of AAA batteries or any power source from 1.7 to 3.6 V.

DS13053 - Rev 8 page 3/31

 BlueNRG-M2
Block diagram

2 Block diagram

Figure 1. HW block diagram for the BlueNRG-M2

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 BlueNRG-M2
Software architecture

3 Software architecture

3.1 Software development kit

The BlueNRG-M2 module embeds the BlueNRG-2 application processor. Refer to the BlueNRG-2 web page
(http://www.st.com) to get access to:
• BlueNRG-2 datasheet
• development kit
• Application notes
• User manuals
• Tools and software
• Design note and tips
Software and firmware should be configured taking into account the BlueNRG-M2 specific configuration as
described in Section 2: Block diagram.
The BLUENRG-M2SA module has:
• 32 MHz crystal oscillator
• 32 kHz crystal oscillator
• SMPS DC-DC converter
• 10 µH SMPS inductor
The projects provided with the development kit should be customized defining as following:
• HS_SPEED_XTAL=HS_SPEED_XTAL_32MHZ
• LS_SOURCE=LS_SOURCE_EXTERNAL_32KHZ
• SMPS_INDUCTOR=SMPS_INDUCTOR_10uH
The BLUENRG-M2SP module has:
• 32 MHz crystal oscillator
• LDO converter
The projects provided with the development kit should be customized as follows:
• HS_SPEED_XTAL=HS_SPEED_XTAL_32MHZ
• LS_SOURCE=LS_SOURCE_INTERNAL_RO
• SMPS_INDUCTOR=SMPS_INDUCTOR_NONE

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 BlueNRG-M2
Software architecture

3.2 Software structure

There are two possible software architectures:
1. Host-less mode (application processor): customer application runs on the BlueNRG-M2 module. Many sample
projects are available in the development kit

Figure 2. BlueNRG-M2 - BLE application processor

1. Hosted mode (network processor): the module is configured as network module controlled by an external host
connected via SPI or UART. A project named DTM is available in the development kit that configures the
BlueNRG-M2 module as a network module.

Figure 3. BlueNRG-M2 as BLE network processor

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 BlueNRG-M2
General characteristics

4 General characteristics

4.1 Absolute maximum ratings

Table 1. Absolute maximum ratings

Ratings Min. Typ. Max. Unit

Storage temperature range -40 - +85 °C

Supply voltage, VIN -0.3 - 3.9 V

I/O pin voltage, VIO -0.3 - 3.9 V

RF saturation input power - 8 - dBm

VESD-HBM electrostatic discharge voltage - ±2.0 - kV

4.2 Operating conditions

Table 2. Operating conditions

Ratings Min. Typ. Max. Unit

Storage temperature range -40 - +85 °C

Operating ambient temperature range -40 - +85 °C
Supply voltage, VIN 1.7 3.3 3.6 V

Signals and I/O pin voltage (according supply voltage) 1.7 - 3.6 V
Frequency range 2402 - 2480 MHz

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 BlueNRG-M2
Electrical specifications

5 Electrical specifications

5.1 Electrical characteristics

Characteristic measured over recommended operating conditions unless otherwise specified. Typical values are
referred to VIN= 3.3 V, 25 °C, SMPS on, XO 32 kHz and 32 MHz.

Table 3. Electrical characteristics for the BLUENRG-M2SA

Symbol Parameter Test conditions Min. Typ. Max. Unit

Reset - 5 - nA
Standby - 0.5 - uA
Sleep mode: 32 kHz XO ON (24 kB retention
- 0.9 - μA
RAM)
Active mode - 1.89 - mA
RX - 7.55 - mA
TX +8 dBm - 14.78 - mA
IDD Supply current
TX +4 dBm - 10.73 - mA
TX +2 dBm - 9.27 - mA
TX -2 dBm - 8.46 - mA
TX -5 dBm - 7.89 - mA
TX -8 dBm - 7.45 - mA
TX -11 dBm - 7.17 - mA
TX -14 dBm - 7.01 - mA

Characteristic measured over recommended operating conditions unless otherwise specified. Typical values are
referred to VIN= 3.3 V, 25 °C, SMPS off, RO 32 kHz and 32 MHz.

Table 4. Electrical characteristics for the BLUENRG-M2SP

Symbol Parameter Test conditions Min. Typ. Max. Unit

Reset - 5 - nA
Standby - 0.5 - uA
Sleep mode: 32 kHz RO ON (24 kB retention
- 2.1 - μA
RAM)
Active mode - 2.75 - mA
RX - 15 - mA
TX +8 dBm - 33.9 - mA
IDD Supply current
TX +4 dBm - 22.6 - mA
TX +2 dBm - 19.1 - mA
TX -2 dBm - 16.9 - mA
TX -5 dBm - 15.6 - mA
TX -8 dBm - 14.7 - mA
TX -11 dBm - 14.1 - mA
TX -14 dBm - 13.7 - mA

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 BlueNRG-M2
Electrical specifications

5.2 Digital I/O specifications

IO pins are directly connected to the embedded state of the art BlueNRG-2 chipset. For more details about the
digital I/O specifications, please refer directly to the BlueNRG-2 datasheet available on www.st.com.

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 BlueNRG-M2
Electrical specifications

5.3 RF general characteristics

Characteristic measured over recommended operating conditions unless otherwise specified. Typical value are
referred to VIN= 3.3 V, 25 °C, DC/DC on, XO 32 kHz (BLUENRG-M2SA only) and XO 32 MHz.

Table 5. RF general characteristics

Symbol Parameter Test conditions Min. Typ. Max. Unit

FREQ Frequency range - 2400 - 2483.5 MHz

FCH Channel spacing - - 2 - MHz
RFch RF channel center frequency - 2402 - 2480 MHz

Table 6. BLUENRG-M2SA RF characteristics

Symbol Parameter Test conditions Min. Typ. Max. Unit

RPMAX(1) Output power(2) Radiated - +5 - dBm

RXSENS Sensitivity(2) Conducted - -85 - dBm

1. PA-Level set to 0x07 and En-High_Power set to 0x01 (corresponding to +8 dBm in conducted mode).
2. Radiated power may be impacted by application board / housing / etc.

Table 7. BLUENRG-M2SP RF characteristics

Symbol Parameter Test conditions Min. Typ. Max. Unit

RPMAX(1) Radiated output power(2) Radiated - +7 - dBm

RXSENS Sensitivity(2) Conducted - -85 - dBm

1. PA-Level set to 0x07 and En-High_Power set to 0x01 (corresponding to +8dBm in conducted mode).
2. Radiated power may be impacted by application board / housing / etc.

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 BlueNRG-M2
Electrical specifications

5.4 Pin assignment

Figure 4. Pin connection for the BLUENRG-M2SA

Figure 5. Pin connection for the BLUENRG-M2SP

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 BlueNRG-M2
Electrical specifications

Table 8. Pin connection

Function
Pin # Name
Mode “000” Mode “001” Mode “100” Mode “010”

1 ADC2 ADC input 2

2 ADC1 ADC input 1
3 DIO4 GPIO4 UART_RXD I2C2_CLK PWM0
4 DIO5 GPIO5 UART_TXD I2C2_DAT PWM1
5 VIN Power Supply
6 ANATEST0/DIO14 GPIO14 I2C1_CLK SPI_CLK ADC_DAT

7 DIO7/BOOT (1) GPIO7 UART_CTS I2C2_DAT PDM_CLK

8 GND Ground
9 DIO6 GPIO6 UART_RTS I2C2_CLK PDM_DAT
10 DIO8 GPIO8 UART_TXD SPI_CLK PDM_DAT
11 DIO11 GPIO11 UART-RXD SPI_CS1 -

12 DIO9 GPIO9 SWCLK SPI_IN(2) -

13 DIO10 GPIO10 SWDIO SPI_out(3) -

14 ANATEST1 Anatest1
15 DIO0 GPIO0 UART_CTS SPI_CLK -
16 DIO2 GPIO2 PWM0 SPI_OUT PDM_CLK
17 DIO3 GPIO3 PWM1 SPI_IN ADC_CLK
18 DIO1 GPIO1 UART_RTS SPI_CS1 PDM_DAT
19 RESETN Reset

20 DIO12 GPIO12 (4) - I2C1_CLK -

21(5) GND Ground or leave unconnected

22(5) N.C. Leave unconnected

23(5) N.C. Leave unconnected

1. The pin DIO7/BOOT is monitored by bootloader after power-up or hardware reset and it should be low to prevent unwanted
bootloader activation.
2. The function SPI_IN indicates that the pin is always an input when configured for SPI. Thus in case of SPI master role, it
acts as MISO pin. In case of SPI slave role, this pin act as MOSI
3. The function SPI_OUT indicates that the pin is always an output when configured for SPI. Thus in case of SPI master role, it
acts as MOSI pin. In case of SPI slave role, this pin act as MISO.
4. DI012 can only be general purpose input pins (not output), or I2C1 clock pin.
5. BLUENRG-M2SA only.

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 BlueNRG-M2
Hardware design

6 Hardware design

Note: • All unused pins should be left floating; do not ground

• All GND pins must be well grounded
• The area around the module should be free of any ground planes, power planes, trace routings, or metal
for 6 mm from the module antenna position, in all directions.
• Traces should not be routed underneath the module

6.1 Reset circuitry

The BlueNRG-M2 module requires an external reset circuitry to ensure proper operation at power-on. Refer to the
"Reset management" section of the BlueNRG-2 datasheet for details.

Figure 6. Reset circuitry

If reset pin is controlled by an external host, RC circuit on the RESETn line is not required.

6.2 Debug interface

The BlueNRG-M2 embeds the ARM serial wire debug (SWD) port. It is two pin (clock and single bi-directional
data) debug interface, providing all the debug functionality plus real time access to system memory without halting
the processor or requiring any target resident code

Table 9. Debug interface

Pin functionality Module PIN Pin description

SWCLK 12 SWD clock signal

SWDIO 13 SWD data signal

For more information refer to the BlueNRG-2 technical documentation (https://www.st.com).

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 BlueNRG-M2
Hardware design

6.3 Reflow soldering

The BlueNRG-M2 is a high temperature strength surface mount Bluetooth® module supplied on a 23-pin
(BLUENRG-M2SA) or 20 pin (BLUENRG-M2SP), 4-layer PCB. The final assembly recommended reflow profiles
are indicated here below.
Soldering phase has to be executed with care: in order to avoid undesired melting phenomenon, particular
attention has to be taken on the set up of the peak temperature.
Here are some suggestions for the temperature profile based on the following recommendations.

Table 10. Soldering profile

Profile feature PB-free assembly

Average ramp up rate (TSMAX to Tp) 3°C/ s max.

Preheat
temperature min (TS min.) 150 °C
200 °C
temperature max (TS max.)
60-100 s
time (tS min to tS max.) (tS)

Time maintained above

Temperature TL 217 °C
60-70 s
Time tL

Peak temperature (TP) 240 +0 °C

Time within 5 °C of peak temperature (TP -5°) 10-20 s

Ramp down rate 6 °C/s

Time from 25 °C to peak temperature 8 minutes max.

Figure 7. Soldering profiles

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 BlueNRG-M2
Regulatory compliance

7 Regulatory compliance

7.1 FCC certification

This module has been tested and found to comply with the FCC part 15 rules. These limits are designed to
provide reasonable protection against harmful interference in approved installations. 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 may not occur in a particular installation.
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
2. this device must accept any interference received, including interference that may cause undesired operation
Modifications or changes to this equipment not expressly approved by STMicroelectronics may render void the
user's authority to operate this equipment.
Modular approval
FCC ID: S9NBNRGM2SA & S9NBNRGM2SP
In accordance with FCC part 15, the BLUENRG-M2SA and BLUENRG-M2SP is listed as a modular transmitter
device.
This module is evaluated for stand-alone use only. Finished products incorporating multiple transmitters must
comply with collocation and RF exposure requirements in accordance with FCC multi-transmitter product
procedures. Collocated transmitters operating in portable RF Exposure conditions (e.g. <20 cm from persons
including but not limited to body worn and hand held devices) may require separate approval.

7.1.1 Labeling instructions

When the BLUENRG-M2SA and BLUENRG-M2SP are integrated into the final product, the OEM must ensure
that the FCC labeling requirements are satisfied. A statement must be included on the exterior of the final product
which indicates the product includes a certified module. The label should state the following (or similar wording
that conveys the same meaning):
Contains FCC ID: S9NBNRGM2SA & S9NBNRGM2SP
OR
This product contains FCC ID: S9NBNRGM2SA & S9NBNRGM2SP
The OEM must include the following statements on the exterior of the final product unless the product is too small
(e.g. less than 4 x 4 inches):
This device complies with part 15 of the FCC rules. Operation is subjected to the following two conditions:
1. this device may not cause harmful interference and
2. this device must accept any interference received, including any interference that may cause undesired
operations.

7.1.2 Product manual instructions

This section applies to OEM final products containing the BlueNRG-M2 module, subjected to FCC compliance.
The final product manual must contain the following statement (or a similar statement that conveys the same
meaning):
Note: Changes or modifications not expressly approved by the party responsible for compliance could void the user's
authority to operate the equipment. (Part. 15.21)
In the case where an OEM seeks Class B (residential) limits for the final product, the following statement must be
included in the final product manual:

DS13053 - Rev 8 page 15/31

 BlueNRG-M2
Regulatory compliance

Note: 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 or more 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
In the case where an OEM seeks the lesser category of a Class A digital device for the final product, the following
statement must be included in the final product manual:
Note: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part
15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference
when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate
radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause
harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause
harmful interference in which case the user will be required to correct the interference at his expense.

7.2 IC certification
This device contains license-exempt transmitter(s)/receiver(s) that comply with innovation, science and economic
development Canada’s license-exempt RSS(s). Operation is subjected to the following two conditions:
1. this device may not cause interference
and
1. this device must accept any interference, including interference that may cause undesired operations of the
device.
In addition, in accordance with RSS-102 clause 2.6, the RF exposure compliance distance of the BlueNRG-M2 is
set equal to 15 mm.
Modular approval
IC: 8976C-BNRGM2SA and 8976C-BNRGM2SP
In accordance with IC RSS-247, the BlueNRG-M2 is listed as a modular transmitter device.
This module is evaluated for stand-alone use only. Finished products incorporating multiple transmitters must
comply with collocation and RF exposure requirements in accordance with IC multi-transmitter product
procedures. Collocated transmitters operating in portable RF Exposure conditions (e.g. <20 cm from persons
including but not limited to body worn and hand held devices) may require separate approval.

7.2.1 Labeling instructions

When the BlueNRG-M2 is integrated into the final product, the OEM must ensure that the IC labeling
requirements are satisfied. A statement must be included on the exterior of the final product which indicates that
the product includes a certified module. The label should state the following (or similar wording that conveys the
same meaning):
Contains IC: 8976C-BNRGM2SA and 8976C-BNRGM2SP
or
this product contains IC: 8976C-BNRGM2SA and 8976C-BNRGM2SP
The OEM must include the following statements on the exterior of the final product unless the product is too small
(e.g. less than 4 x 4 inches).

7.3 CE certification
The BlueNRG-M2 module has been certified according to the following certification rules:
• ETSI EN 300 328 V 2.2.2 (1)
• ETSI EN 301 489-17 V3.2.4 (2)
• ETSI EN 301 489-1 V2.2.3(3)
• EN 62368-1:2020/A11:2020(4)

DS13053 - Rev 8 page 16/31

 BlueNRG-M2
Regulatory compliance

• EN 62311:2008
1. ETSI EN 300 328 V2.2.2 (2019-07): "Wideband transmission systems;Data transmission equipment operating in the 2,4
GHz band;Harmonized Standard for access to radio spectrum".
2. ETSI EN 301 489-17 V3.2.4 (2020-09): "ElectroMagnetic Compatibility (EMC)standard for radio equipment and services;
Part 17: Specific conditions for Broadband Data Transmission Systems;Harmonised Standard for ElectroMagnetic
Compatibility.
3. ETSI EN 301 489-1 V2.2.3 (2019-11): "ElectroMagnetic Compatibility (EMC) standard for radio equipment and services;
Part 1: Common technical requirements; Harmonised Standard for ElectroMagnetic Compatibility.
4. EN 62368-1:2020/A11:2020: “Audio/video, information and communication technology equipment - Part 1: Safety
requirements”.

The module is provided by CE marking:

The module has obtained the RED certificate:

• 0051-RED-0092 (BLUENRG-M2SA)
• 0051-RED-0098 (BLUENRG-M2SP)
Hereby, STMicroelectronics declares that the radio equipment type BLUENRG-M2 is in compliance with Directive
2014/53/EU.
The full text of the EU declaration of conformity is available at the following internet address:
https://www.st.com/en/wireless-connectivity/bluenrg-m2.html#documentation
The certified module production firmware release is: 2.X
For additional information please refer to: STMicroelectronics Via C. Olivetti 2, Agrate Brianza 20864 (ITALY).

7.4 TYPE certification

The BlueNRG-M2 module has been tested according to following TYPE certification rules:
• Type of specified radio equipment
– Radio equipment according to certification ordinance article 2-1-9
• Sophisticated low power radio data communication system in 2.4 GHz band.
• Class of emissions, assigned frequency, and antenna power
– F1D 2402 - 2480 MHz channel separation 2 MHz/40 channel, 0.005 W
• Certification number:
– 006-000725 (BLUENRG-M2SA)
– 006-000726 (BLUENRG-M2SP)

7.5 WPC ETA certificate

The BlueNRG-M2 module is registered for equipment type approval (ETA) with WPC India.
• Registration No: ETA-SD-20190702736 BlueNRG-M2SP
• Registration No: ETA-SD-20210805996 BlueNRG-M2SA

7.6 SRRC certification

7.6.1 Modular approval

The BlueNRG-M2SA module complies with Chinese SRRC certification.
• SRRC CMIIT ID: 2021DP1341

7.6.2 SRRC labeling instructions

When the BlueNRG-M2SA is intergrated into the final product, the OEM must ensure that the FCC labeling
requirements are satisfied. A statement must be included on the exterior of the final product, which indicates the
product includes a certified module. The label should state the following (or similar wording that conveys the same

DS13053 - Rev 8 page 17/31

 BlueNRG-M2
Regulatory compliance

meaning):
this product uses the SRRC approved radio modular. CMIIT ID: 2021DP1341.

7.7 Bluetooth certification

The module with embedded stack and profile has been qualified in accordance with SIG qualification rules:
• Declaration ID: D043965
• Upgraded declaration ID: U053518
• Qualified design ID: 160033
• Product type: End Product
• Core spec version: 5.2
• Product description: Bluetooth low energy v5.2 module

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 BlueNRG-M2
Package information

8 Package information

In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK packages,
depending on their level of environmental compliance. ECOPACK specifications, grade definitions and product
status are available at: www.st.com. ECOPACK is an ST trademark.

8.1 BLUENRG-M2SA package information

Figure 8. BLUENRG-M2SA package outline

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 BlueNRG-M2
Package information

Table 11. BLUENRG-M2SA mechanical data

mm
Symbol
Min. Typ. Max.

A 2.1 2.3 2.5

A1 0.7 0.8 0.9
A2 1.4 1.5 1.6
D - 11.5 -
E - 13.5 -
F - 1 -
G - 1.46 -
dia - 0.7 -
Pad size X,Y (on bottom side) - 0.6x1 -
e-pitch - 1.27 tol.+/-0.025

Figure 9. BLUENRG-M2SA recommended footprint

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 BlueNRG-M2
Package information

8.2 BLUENRG-M2SP package information

Figure 10. BLUENRG-M2SP package outline

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 BlueNRG-M2
Package information

Table 12. BLUENRG-M2SP mechanical data

mm
Symbol
Min. Typ. Max.

A 2.1 2.3 2.5

A1 0.7 0.8 0.9
A2 1.4 1.5 1.6
D - 11.5 -
E - 13.5 -
F - 1 -
G - 1.46 -
dia - 0.7 -
Pad size X,Y (on bottom side) - 0.6x1 -
e-pitch - 1.27 tol.+/-0.025

Figure 11. BLUENRG-M2SP recommended footprint

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 BlueNRG-M2
Package information

8.3 BlueNRG-M2 packing information

Figure 12. BlueNRG-M2 tape outline

Figure 13. BlueNRG-M2 tape dimension outline

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 BlueNRG-M2
Package information

Figure 14. BlueNRG-M2 reel outline

Table 13. BlueNRG-M2 reel mechanical data

Reel
Dimensions
Min. Max.

A 328 332
B 1.5 -
C 12.8 13.5
D 20.2 -
G 24.4 26.4
N 100 103
T 26.4 30.4

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 BlueNRG-M2
Traceability

9 Traceability

Each module is univocally identified by serial number stored in a 2D data matrix laser marked on the top side
(shield) of the module itself.
Each module bulk is identified by a bulk ID.
Bulk ID and module 2D data matrix are linked by a reciprocal traceability link. The module 2D data matrix traces
the lot number of any raw material used according to following rules:

Table 14. Traceability information

Letter Meaning

HA Reserved
YWW Year and week number
E Reserved
LL Lot sequence number
XX Lot sub-sequence number
0000 Serial number

DS13053 - Rev 8 page 25/31

 BlueNRG-M2

Revision history
Table 15. Document revision history

Date Version Changes

26-Jun-2019 1 Initial release.

Updated features in cover page, Figure 4. Pin connection for the BLUENRG-
24-Jul-2019 2 M2SA and Figure 6. Reset circuitry.
Added Section 8.3: BlueNRG-M2 packing information
Updated cover image, , Section Description, Section 1: General description,
Table 10. Soldering profile, Section 7.3: CE certification,
13-Jan-2021 3 Section 7.7: Bluetooth certification.
Added Section 7.5: WPC ETA certificate.
Updated .
04-Mar-2021 4 Added Section 7.6: SRRC certification, Section 7.6.1: Modular approval and
Section 7.6.2: SRRC labeling instructions.
19-Oct-2021 5 Updated and Section 7.3: CE certification.
28-Oct-2021 6 Updated Table 8. Pin connection.
10-Dec-2021 7 Updated , and Section 7.5: WPC ETA certificate.
20-Mar-2024 8 Updated Table 1.

DS13053 - Rev 8 page 26/31

 BlueNRG-M2
Contents

Contents
1 General description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
2 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
3 Software architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.1 Software development kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.2 Software structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4 General characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4.1 Absolute maximum ratings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4.2 Operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
5 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5.1 Electrical characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5.2 Digital I/O specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
5.3 RF general characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
5.4 Pin assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
6 Hardware design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
6.1 Reset circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
6.2 Debug interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
6.3 Reflow soldering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
7 Regulatory compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
7.1 FCC certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
7.1.1 Labeling instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
7.1.2 Product manual instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
7.2 IC certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
7.2.1 Labeling instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
7.3 CE certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
7.4 TYPE certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
7.5 WPC ETA certificate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
7.6 SRRC certification. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
7.6.1 Modular approval . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
7.6.2 SRRC labeling instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
7.7 Bluetooth certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
8 Package information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
8.1 BLUENRG-M2SA package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
8.2 BLUENRG-M2SP package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
8.3 BlueNRG-M2 packing information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

DS13053 - Rev 8 page 27/31

 BlueNRG-M2
Contents

9 Traceability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

DS13053 - Rev 8 page 28/31

 BlueNRG-M2
List of tables

List of tables
Table 1. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 2. Operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 3. Electrical characteristics for the BLUENRG-M2SA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Table 4. Electrical characteristics for the BLUENRG-M2SP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Table 5. RF general characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Table 6. BLUENRG-M2SA RF characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Table 7. BLUENRG-M2SP RF characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Table 8. Pin connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Table 9. Debug interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Table 10. Soldering profile. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Table 11. BLUENRG-M2SA mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Table 12. BLUENRG-M2SP mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Table 13. BlueNRG-M2 reel mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Table 14. Traceability information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Table 15. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

DS13053 - Rev 8 page 29/31

 BlueNRG-M2
List of figures

List of figures
Figure 1. HW block diagram for the BlueNRG-M2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Figure 2. BlueNRG-M2 - BLE application processor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 3. BlueNRG-M2 as BLE network processor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 4. Pin connection for the BLUENRG-M2SA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Figure 5. Pin connection for the BLUENRG-M2SP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Figure 6. Reset circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 7. Soldering profiles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 8. BLUENRG-M2SA package outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 9. BLUENRG-M2SA recommended footprint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 10. BLUENRG-M2SP package outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Figure 11. BLUENRG-M2SP recommended footprint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Figure 12. BlueNRG-M2 tape outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Figure 13. BlueNRG-M2 tape dimension outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Figure 14. BlueNRG-M2 reel outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

DS13053 - Rev 8 page 30/31

 BlueNRG-M2

IMPORTANT NOTICE – READ CAREFULLY

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Information in this document supersedes and replaces information previously supplied in any prior versions of this document.
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DS13053 - Rev 8 page 31/31