Boron Datasheet (v009)

Functional description

Overview

The Boron is a powerful LTE Cat M1 or 2G/3G enabled development kit that supports cellular networks and Bluetooth LE (BLE). It is based on the Nordic nRF52840 and has built-in battery charging circuitry so it’s easy to connect a Li-Po and deploy your local network in minutes.

The Boron is great for connecting existing projects to the Particle Device Cloud where Wi-Fi is missing or unreliable.

Features

  • u-blox SARA-R410-02B LTE modem (Boron LTE, BRN404 and BRN402)
    • LTE Cat M1 module with global hardware support (MVNO support for US only)
    • 3GPP Release 13 LTE Cat M1
    • Cat M1 bands: 2, 3, 4, 5, 8, 12, 13, 20, 28
  • u-blox SARA U201 2G/3G modem (Boron 2G/3G, BRN314 and BRN310)
    • HSPA/GSM with global hardware and SIM support
    • Bands 800/850/900/1900/2100 MHz
    • 3GPP Release 7
  • Nordic Semiconductor nRF52840 SoC
    • ARM Cortex-M4F 32-bit processor @ 64MHz
    • 1MB flash, 256KB RAM
    • Bluetooth 5: 2 Mbps, 1 Mbps, 500 Kbps, 125 Kbps
    • Supports DSP instructions, HW accelerated Floating Point Unit (FPU) calculations
    • ARM TrustZone CryptoCell-310 Cryptographic and security module
    • Up to +8 dBm TX power (down to -20 dBm in 4 dB steps)
    • NFC-A tag
  • On-board additional 4MB SPI flash
  • 20 mixed signal GPIO (6 x Analog, 8 x PWM), UART, I2C, SPI
  • Micro USB 2.0 full speed (12 Mbps)
  • Integrated Li-Po charging and battery connector
  • JTAG (SWD) Connector
  • RGB status LED
  • Reset and Mode buttons
  • Dual SIM support: Nano 4FF and MFF2
  • On-board PCB antenna
  • U.FL connector for external antenna
  • Meets the Adafruit Feather specification in dimensions and pinout
  • FCC and PTCRB certified
  • RoHS compliant (lead-free)

Interfaces

Block diagram

Block Diagram

Power

USB PORT

The USB port is the easiest way to power up the Boron. Please make sure that the USB port is able to provide at least 500mA. Power from the USB is regulated down to 3.3V by the on board Torex XC9258A step-down regulator.

For powering the Boron 2G/3G version, you'll either need a USB port that is able support 2A current, or have the LiPo battery plugged in when powering over USB. This is because the on-board u-blox modem can consumes up to 1.8A peak current when operating in 2G mode. The Boron will intelligently source power from the USB most of the time and keep the battery charged. During peak current requirements, the additional power will be sourced from the battery. This reduces the charge-discharge cycle load on the battery, thus improving its longevity.

VUSB PIN

The pin is internally connected to the VBUS of the USB port. The nominal output should be around 4.5 to 5 VDC when the device is plugged into the USB port and 0 when not connected to a USB source. You can use this pin to power peripherals that operate at such voltages. Do not exceed the current rating of the USB port, which is nominally rated to 500mA.

LiPo

If you want to make your projects truly wireless, you can power the device with a single cell LiPo (3.7V). The Boron has an on board LiPo charger that will charge and power the device when USB source is plugged in, or power the device from the LiPo alone in the absence of the USB.

NOTE: Please pay attention to the polarity of the LiPo connector. Not all LiPo batteries follow the same polarity convention!

Li+ PIN

This pin is internally connected to the positive terminal of the LiPo connector. You can connect a single cell LiPo/Lithium Ion or a DC supply source to this pin for powering the Boron. Remember that the input voltage range on this pin is 3.6 to 4.2 VDC.

For the Boron 2G/3G version, make sure that the external DC supply is able to support 2A peak current requirements.

3V3 PIN

This pin is the output of the on board 3.3V step-down switching regulator (Torex XC9258A). The regulator is rated at 1000mA max. When using this pin to power other devices or peripherals remember to budget in the current requirement of the Boron first. Unlike the Photon, this pin CANNOT be used to power the Boron.

EN PIN

The EN pin is not a power pin, per se, but it controls the 3V3 and cellular modem power via a load switch (XC8107, U2). The EN pin is pulled high by a 100K resistor to PMIC_SYS (3.8V), which is powered by VUSB, the micro USB connector, or the LiPo battery. Because the pull-up can result in voltages above 3.3V you should never directly connect EN to a 3.3V GPIO pin. Instead, you should only pull EN low, such as by using an N-channel MOSFET or other open-collector transistor.

The EN pin can force the device into a deep power-down state where it uses very little power. It also can used to assure that the device is completely reset, similar to unplugging it, with one caveat:

If using the EN pin to deeply reset the device, you must be careful not to allow leakage current back into the nRF52 MCU by GPIO or by pull-ups to 3V3. If you only power external devices by 3V3 you won't run into this, as 3V3 is de-powered when EN is low.

However, if you have circuitry that is powered by a separate, external power supply, you must be careful. An externally powered circuit that drives a nRF52 GPIO high when EN is low can provide enough current to keep the nRF52 from powering down and resetting. Likewise, a pull-up to an external power supply can do the same thing. Be sure that in no circumstances can power by supplied to the nRF52 when 3V3 is de-powered.

See the power supply schematic, below, for more information.


Antenna

There are two radios on the Boron. A BLE radio (nRF52840) and a cellular radio (u-blox). For the cellular radio, we have provided a u.FL connector to plug in the cellular antenna. This is required if you wish to use the cellular connectivity.

There are two options for the BLE antenna on the Boron. It comes with an on-board PCB antenna which is selected by default in the device OS and a u.FL connector if you wish to connect an external antenna. If you wish to use the external antenna, you'll need to issue an appropriate command in the firmware.

FCC approved antennas

BLE

The following antenna is optional, as the Boron comes with an on-board chip antenna for BLE. It can be purchased in the Particle online store.

Particle Device Frequency Antenna Type Manufacturer MFG. Part # Gain
Boron 2400-2500 MHz PCB Antenna Particle ANT-FLXV2 2.0dBi peak

It is also possible to use most antennas designed for Wi-Fi (2.4 GHz) as a BLE antenna. In some cases, a u.FL to RP-SMA adapter will be required. If you are building a product using alternative antennas, additional certification may be required.

Cellular

Particle Device Frequency Antenna Type Manufacturer MFG. Part # Gain
Boron 698-3000 MHz PCB Antenna Taoglas FXUB63.07.0150C 5.00dBi peak

Peripherals and GPIO

Peripheral Type Qty Input(I) / Output(O)
Digital 20 I/O
Analog (ADC) 6 I
UART 1 I/O
SPI 2 I/O
I2C 1 I/O
USB 1 I/O
PWM 8 O

Note: All GPIOs are only rated at 3.3VDC max.

SWD

The Boron has a dedicated 10 pin debug connector that exposes the SWD interface of the nRF52840. This interface can be used to debug your code or reprogram your Boron bootloader, device OS, or the user firmware using any standard SWD tools including our Gen 3 Debugger.

Memory map

nRF52840 Flash Layout Overview

  • Bootloader (48KB, @0xF4000)
  • User Application
    • 256KB @ 0xB4000 (Device OS 3.1 and later)
    • 128KB @ 0xD4000 (Device OS 3.0 and earlier)
  • System (656KB, @0x30000)
  • SoftDevice (192KB)

External SPI Flash Layout Overview (DFU offset: 0x80000000)

  • OTA (1500KB, @0x00289000)
  • Reserved (420KB, @0x00220000)
  • FAC (128KB, @0x00200000)
  • LittleFS (2M, @0x00000000)

Pins and button definitions

Pin markings

Pinout diagram

Pinout

You can download a high resolution PDF version of the pin out here.

Pin description

Pin Description
Li+ This pin is internally connected to the positive terminal of the LiPo battery connector.
VUSB This pin is internally connected to the USB (+ve) supply.
3V3 This pin is the output of the on-board 3.3V regulator.
GND System ground pin.
EN Device enable pin is internally pulled-up. To disable the device, connect this pin to GND.
RST Active-low system reset input. This pin is internally pulled-up.
MD This pin is internally connected to the MODE button. The MODE function is active-low.
RX Primarily used as UART RX, but can also be used as a digital GPIO.
TX Primarily used as UART TX, but can also be used as a digital GPIO.
SDA Primarily used as data pin for I2C, but can also be used as a digital GPIO.
SCL Primarily used as clock pin for I2C, but can also be used as a digital GPIO.
MO,MI,SCK These are the SPI interface pins, but can also be used as a digital GPIO.
D2-D8 These are generic GPIO pins. D2-D8 are PWM-able.
A0-A5 These are analog input pins that can also act as standard digital GPIO. A0-A5 are PWM-able.

LED status

System RGB LED

For a detailed explanation of different color codes of the RGB system LED, please take a look here.

Charge status LED

State Description
ON Charging in progress
OFF Charging complete
Blink at 1Hz Fault condition[1]
Rapid blinking Battery disconnected[2]

Notes:

[1] A fault condition can occur due to several reasons, for example, battery over/under voltage, temperature fault or safety timer fault. You can find the root cause by reading the fault register of the power management IC in firmware.

[2] You can stop this behavior by either plugging in the LiPo battery or by disabling charging using firmware command: PMIC().disableCharging();.

Technical specifications

Absolute maximum ratings [1]

Parameter Symbol Min Typ Max Unit
Supply Input Voltage VIN-MAX +6.2 V
Battery Input Voltage VLiPo +6.5 V
Supply Output Current I3V3-MAX-L 1000 mA
Storage Temperature Tstg -30 +75 °C
ESD Susceptibility HBM (Human Body Mode) VESD 1 kV

[1] Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under recommended operating conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

Parameter Symbol Min Typ Max Unit
LiPo Battery Voltage VLiPo +3.3 +4.4 V
Supply Input Voltage V3V3 +3.0 +3.3 +3.6 V
Supply Output Voltage V3V3 +3.3 V
Operating Temperature Top -20 +60 °C
Humidity Range Non condensing, relative humidity 95 %

Power consumption (Boron 2G/3G)

Parameter Symbol Min Typ Peak Unit
Peak Current, 3G ILi+ pk 800 mA
Peak Current, 2G ILi+ pk 1800 mA
Operating Current (uC on, peripherals and radio disabled) Iidle 3.76 3.77 3.79 mA
Operating Current (uC on, cellular on but not connected) Icell_idle 3.84 25.2 901 mA
Operating Current (uC on, cellular connecting to tower) Icell_conn_twr 11.6 56.9 579 mA
Operating Current (uC on, cellular connecting to cloud) Icell_conn_cloud 22.4 97.9 957 mA
Operating Current (uC on, cellular connected but idle) Icell_cloud_idle 15.6 18.7 84.7 mA
Operating Current (uC on, cellular connected and transmitting) Icell_cloud_tx 19.5 86.1 981 mA
STOP mode sleep, GPIO wake-up Istop_gpio 594 631 665 uA
STOP mode sleep, analog wake-up Istop_analog 579 585 591 uA
STOP mode sleep, RTC wake-up Istop_intrtc 589 607 630 uA
STOP mode sleep, BLE wake-up, advertising Istop_ble_adv 17.0 907 2400 uA
STOP mode sleep, BLE wake-up, connected Istop_ble_conn 443 906 1540 uA
STOP mode sleep, serial wake-up Istop_usart 589 606 627 uA
STOP mode sleep, cellular wake-up Istop_cell 6.49 15.6 81.0 mA
ULP mode sleep, GPIO wake-up Iulp_gpio 160 171 182 uA
ULP mode sleep, analog wake-up Iulp_analog 166 178 188 uA
ULP mode sleep, RTC wake-up Iulp_intrtc 163 174 185 uA
ULP mode sleep, BLE wake-up, advertising Iulp_ble_adv 494 2100 uA
ULP mode sleep, BLE wake-up, connected Iulp_ble_conn 55.9 515 1090 uA
ULP mode sleep, serial wake-up Iulp_usart 590 610 634 uA
ULP mode sleep, cellular wake-up Iulp_cell 6.96 16.4 81.1 mA
HIBERNATE mode sleep, GPIO wake-up Ihib_gpio 139 146 162 uA
HIBERNATE mode sleep, analog wake-up Ihib_analog 139 147 163 uA
Power disabled (EN pin = LOW) Idisable 70 75 uA

1The min, and particularly peak, values may consist of very short transients. The typical (typ) values are the best indicator of overall power consumption over time. The peak values indicate the absolute minimum capacity of the power supply necessary, not overall consumption.


Power consumption (Boron LTE)

Parameter Symbol Min Typ Peak Unit
Peak Current ILi+ pk 120 490 mA
Operating Current (uC on, peripherals and radio disabled) Iidle 3.89 3.90 3.92 mA
Operating Current (uC on, cellular on but not connected) Icell_idle 5.78 16.9 mA
Operating Current (uC on, cellular connecting to tower) Icell_conn_twr 14.7 58.9 178 mA
Operating Current (uC on, cellular connecting to cloud) Icell_conn_cloud 14.6 53.4 207 mA
Operating Current (uC on, cellular connected but idle) Icell_cloud_idle 17.9 108 mA
Operating Current (uC on, cellular connected and transmitting) Icell_cloud_tx 63.9 184 mA
STOP mode sleep, GPIO wake-up Istop_gpio 565 575 590 uA
STOP mode sleep, analog wake-up Istop_analog 565 577 593 uA
STOP mode sleep, RTC wake-up Istop_intrtc 568 584 602 uA
STOP mode sleep, BLE wake-up, advertising Istop_ble_adv 91.6 885 2210 uA
STOP mode sleep, BLE wake-up, connected Istop_ble_conn 486 866 1440 uA
STOP mode sleep, serial wake-up Istop_usart 569 587 612 uA
STOP mode sleep, cellular wake-up Istop_cell 12.2 104 mA
ULP mode sleep, GPIO wake-up Iulp_gpio 127 137 uA
ULP mode sleep, analog wake-up Iulp_analog 130 141 uA
ULP mode sleep, RTC wake-up Iulp_intrtc 128 138 uA
ULP mode sleep, BLE wake-up, advertising Iulp_ble_adv 442 2120 uA
ULP mode sleep, BLE wake-up, connected Iulp_ble_conn 438 1050 uA
ULP mode sleep, serial wake-up Iulp_usart 568 584 601 uA
ULP mode sleep, cellular wake-up Iulp_cell 14.2 112 mA
HIBERNATE mode sleep, GPIO wake-up Ihib_gpio 98.7 106 118 uA
HIBERNATE mode sleep, analog wake-up Ihib_analog 99.4 106 120 uA
Power disabled (EN pin = LOW) Idisable 70 75 uA

1The min, and particularly peak, values may consist of very short transients. The typical (typ) values are the best indicator of overall power consumption over time. The peak values indicate the absolute minimum capacity of the power supply necessary, not overall consumption.


Radio specifications

Boron has two radio modules.

Nordic Semiconductor nRF52840 for BLE.

Feature Description
Operating Frequencies 2360 to 2500 MHz
Output Power Programmable -20dBm to +8dBm
PLL channel spacing 1 MHz
On the air data rate 125 to 2000 kbps

u-blox SARA U201 (2G/3G) and R410 (LTE Cat M1) for cellular.

BORON Compatible Countries
2G/3G Worldwide
LTE USA, Canada, and Mexico (LTE Cat M1)

I/O Characteristics

These specifications are based on the nRF52840 datasheet.

Parameter Symbol Conditions Min Typ Max Unit
Input high voltage VIH 0.7*3.3 -- 3.3 V
Input low voltage VIL 0 0.3*3.3 V
Current at GND+0.4 V, output set low, high drive IOL,HDL V3V3 >= 2.7V 6 10 15 mA
Current at V3V3-0.4 V, output set high, high drive IOH,HDH V3V3 >= 2.7V 6 9 14 mA
Current at GND+0.4 V, output set low, standard drive IOL,SD V3V3 >= 2.7V 1 2 4 mA
Current at V3V3-0.4 V, output set high, standard drive IOH,SD V3V3 >= 2.7V 1 2 4 mA
Pull-up resistance RPU 11 13 16
Pull-down resistance RPD 11 13 16

GPIO default to standard drive (2mA) but can be reconfigured to high drive (9mA) in Device OS 2.0.0 and later using the pinSetDriveStrength() function.

Mechanical specifications

Dimensions and Weight

  • Weight = 10 grams

Mating connectors

The Boron uses two single row 0.1" pitch male header pins. One of them is 16 pin while the other is 12 pin. It can be mounted with matching 0.1" pitch female headers with a typical height of 0.335" (8.5mm). When you search for parts like these it can be difficult to navigate the thousands of parts available online so here are a few good choices for the Boron:

Description MFG MFG Part Number
16-pin 0.1" (2.54mm) Female Header Sullins PPTC161LFBN-RC
16-pin 0.1" (2.54mm) Female Header TE 6-535541-4
12-pin 0.1" (2.54mm) Female Header Sullins PPTC121LFBN-RC
12-pin 0.1" (2.54mm) Female Header TE 6-534237-0

The Boron can be directly soldered onto the PCB or be mounted with the above mentioned female headers.

Schematic

The complete schematic and board files are open source and available on Particle's GitHub repository here.

Power

Power Schematic

nRF52840

nRF52 Schematic

u-blox

u-blox Schematic

SIM

SIM Schematic

SPI Flash

SPI Flash

Fuel Gauge

Fuel Gauge

Interfaces

Interfaces

Country compatibility

Country Model Technologies Carriers
Afghanistan BRN314 2G, 3G MTN
Albania BRN314 2G, 3G ALBtelecom, Telekom, Vodafone
Algeria BRN314 2G, 3G Mobilis, Ooredoo
Anguilla BRN314 2G, 3G Flow
Antigua and Barbuda BRN314 2G, 3G Flow
Argentina BRN314 2G, 3G Claro, Movistar, Personal
Armenia BRN314 2G, 3G Beeline, Ucom
Australia BRN314 3G Optus, Telstra, Vodafone
Austria BRN314 2G, 3G 3 (Drei), A1, T-Mobile
Azerbaijan BRN314 2G, 3G Azercell, Bakcell, NAR Mobile
Bahamas BRN314 2G, 3G Aliv, BTC Bahamas
Bahrain BRN314 2G, 3G Zain
Bangladesh BRN314 2G, 3G Bangalink, GrameenPhone
Barbados BRN314 2G, 3G Flow
Belarus BRN314 2G, 3G A1
Belgium BRN314 2G, 3G Base, Orange, Proximus
Bolivia BRN314 2G, 3G NuevaTel
Bosnia and Herzegovina BRN314 2G, 3G BH Telecom, HT Eronet
Brunei BRN314 2G, 3G DST
Bulgaria BRN314 2G, 3G A1, Telenor, Vivacom
Burkina Faso BRN314 2G, 3G Orange
Cambodia BRN314 2G, 3G Metfone
Canada BRN404 M1 Bell Mobility, Rogers Wireless, Telus
Cayman Islands BRN314 2G, 3G Flow
Chad BRN314 2G, 3G Airtel
Chile BRN314 2G, 3G Claro, Entel, Movistar
Colombia BRN314 2G, 3G Movistar, Tigo
Congo (Brazzaville) BRN314 2G, 3G Airtel
Congo (Kinshasa) BRN314 2G, 3G Airtel
Costa Rica BRN314 2G, 3G Movistar
Côte d'Ivoire BRN314 2G, 3G MTN
Croatia BRN314 2G, 3G Hrvatski Telekom, Tele2
Cyprus BRN314 2G, 3G Cytamobile-Vodafone, MTN, PrimeTel
Czechia BRN314 2G, 3G O2, T-Mobile, Vodafone
Denmark BRN314 2G, 3G 3 (Tre), TDC, Telenor, Telia
Dominica BRN314 2G, 3G Flow
Dominican Republic BRN314 2G, 3G Altice Dominicana, Claro, Viva
Ecuador BRN314 2G, 3G Claro, Movistar
Egypt BRN314 2G, 3G Etisalat, Orange
El Salvador BRN314 2G, 3G Claro, Telefonica
Estonia BRN314 2G, 3G Elisa, Tele2, Telia
eSwatini BRN314 2G, 3G MTN
Ethiopia BRN314 2G, 3G Ethio Telecom
Faroe Islands BRN314 2G, 3G Faroese Telecom, Vodafone
Finland BRN314 2G, 3G DNA, Elisa, Telia
France BRN314 2G, 3G Bouygues, Free Mobile, Orange, SFR
French Guiana BRN314 2G, 3G Digicel
Gabon BRN314 2G, 3G Airtel
Georgia BRN314 2G, 3G Beeline, Geocell
Germany BRN314 2G, 3G O2, Telekom, Vodafone
Ghana BRN314 2G, 3G AirtelTigo, MTN, Vodafone
Gibraltar BRN314 2G, 3G Gibtel
Greece BRN314 2G, 3G Cosmote, Vodafone, Wind
Grenada BRN314 2G Flow
Guadeloupe BRN314 2G, 3G Orange
Guatemala BRN314 2G, 3G Claro, Movistar
Guinea BRN314 2G, 3G MTN
Guinea-Bissau BRN314 2G, 3G MTN
Guyana BRN314 2G Digicel
Haiti BRN314 2G, 3G Digicel
Honduras BRN314 2G, 3G Claro, Tigo
Hong Kong BRN314 2G, 3G CMHK, CSL, SmarTone
Hungary BRN314 2G, 3G Magyar Telekom, Telenor, Vodafone
Iceland BRN314 2G, 3G Nova, Siminn, Vodafone
Indonesia BRN314 2G, 3G Indosat, Telkomsel, XL Axiata
Ireland BRN314 2G, 3G 3 (Tre), Meteor, O2, Vodafone
Israel BRN314 2G, 3G Hot Mobile, Orange, Pelephone
Italy BRN314 2G, 3G TIM, Vodafone, Wind
Jamaica BRN314 2G, 3G Digicel, Flow
Japan BRN314 3G NTT DoCoMo, Softbank
Jordan BRN314 2G, 3G Zain
Kazakhstan BRN314 2G, 3G Beeline, K-Cell
Kenya BRN314 2G, 3G Airtel
Kuwait BRN314 2G, 3G Viva, Zain
Kyrgyzstan BRN314 2G, 3G Beeline
Latvia BRN314 2G, 3G Bite, LMT, Tele2
Liechtenstein BRN314 2G, 3G Mobilkom, Orange
Lithuania BRN314 2G, 3G Bite, Omnitel, Tele2
Luxembourg BRN314 2G, 3G Orange, POST, Tango
Malawi BRN314 2G, 3G Airtel
Malaysia BRN314 2G, 3G Celcom, DiGi, Maxis
Malta BRN314 2G, 3G Go Mobile, Vodafone
Mexico BRN404 M1 AT&T
Moldova BRN314 2G, 3G Moldcell, Orange
Mongolia BRN314 2G, 3G Mobicom, Unitel
Montenegro BRN314 2G, 3G Mtel, T-Mobile, Telenor
Mozambique BRN314 2G, 3G Vodacom
Myanmar BRN314 2G, 3G MPT, Telenor
Namibia BRN314 2G, 3G Telecom Namibia
Netherlands BRN314 2G, 3G KPN, T-Mobile, Vodafone
New Zealand BRN314 2G, 3G 2degrees, Spark, Vodafone
Nicaragua BRN314 2G, 3G Movistar
Nigeria BRN314 2G, 3G 9mobile, Airtel, Glo, MTN
Norway BRN314 2G, 3G TDC, Telenor, Telia
Oman BRN314 2G, 3G Ooredoo
Pakistan BRN314 2G, 3G Mobilink, Telenor, Ufone, Warid
Palestine BRN314 2G, 3G Jawwal
Panama BRN314 2G, 3G Digicel, Movistar
Papua New Guinea BRN314 2G, 3G bmobile
Paraguay BRN314 2G, 3G Claro, Personal, Tigo, Vox
Peru BRN314 2G, 3G Claro, Entel, Movistar
Philippines BRN314 2G, 3G Globe, Smart
Poland BRN314 2G, 3G Orange, Play, Plus, T-Mobile
Portugal BRN314 2G, 3G NOS, TMN, Vodafone
Puerto Rico BRN314 2G, 3G Claro
Qatar BRN314 2G, 3G Ooredoo, Vodafone
Romania BRN314 2G, 3G DigiMobil, Orange, Telekom Romania, Vodafone
Rwanda BRN314 2G, 3G Airtel, MTN
Saint Kitts and Nevis BRN314 2G, 3G Flow
Saint Lucia BRN314 2G, 3G Flow
Saint Vincent and the Grenadines BRN314 2G, 3G Flow
Saudi Arabia BRN314 2G, 3G Mobily, STC, Zain
Serbia BRN314 2G, 3G Telenor, VIP
Sint Maarten BRN314 2G, 3G TelCell
Slovakia BRN314 2G, 3G O2, Orange, Telekom
Slovenia BRN314 2G, 3G A1, Mobitel
South Africa BRN314 2G, 3G Cell C, MTN, Vodacom
South Korea BRN314 3G KT, SK Telecom
South Sudan BRN314 2G, 3G MTN
Spain BRN314 2G, 3G Orange, Telefonica, Vodafone, Yoigo
Sri Lanka BRN314 2G, 3G Dialog, Mobitel
Suriname BRN314 2G, 3G Telesur
Sweden BRN314 2G, 3G 3 (Tre), Tele2, Telenor, Telia
Switzerland BRN314 2G, 3G Salt, Sunrise, Swisscom
Taiwan BRN314 3G Chunghwa, FarEasTone, T Star, Taiwan Mobile
Tajikistan BRN314 2G, 3G Beeline, Tcell
Tanzania BRN314 2G, 3G Airtel
Thailand BRN314 2G, 3G AIS, DTAC, True Move
Trinidad and Tobago BRN314 2G, 3G Digicel, TSTT
Tunisia BRN314 2G, 3G Orange Tunisie, Tunisie Telecom
Turks and Caicos Islands BRN314 2G, 3G Flow
Uganda BRN314 2G, 3G Africell, Airtel, MTN
Ukraine BRN314 2G, 3G Kyivstar, Life, MTS
United Kingdom BRN314 2G, 3G 3, EE, Manx, O2, Sure, Vodafone
United States BRN404 M1 AT&T
Uruguay BRN314 2G, 3G Antel, Claro, Movistar
Uzbekistan BRN314 2G, 3G Beeline
Venezuela BRN314 2G, 3G Movistar
Vietnam BRN314 2G, 3G MobiFone, Viettel, Vinaphone
Virgin Islands (British) BRN314 2G, 3G CCT, Flow
Zambia BRN314 2G, 3G Airtel

Ordering information

Borons are available from store.particle.io in single quantities in 2G/3G and LTE Cat M1 versions.

SKU Description Region Modem EtherSIM Lifecycle Replacement
BRN314KIT Boron 2G/3G (Global) Starter Kit, [x1] Global U201 GA
BRN314TRAY50 Boron 2G/3G (Global), Tray [x50] Global U201 GA
BRN404 Boron LTE CAT-M1 (NorAm), [x1] NORAM R410 GA
BRN404KIT Boron LTE CAT-M1 (NorAm) Starter Kit, [x1] NORAM R410 GA
BRN404TRAY50 Boron LTE CAT-M1 (NorAm), Tray [x50] NORAM R410 GA
BRN310TRAY50 Boron 2G/3G (Global), Tray [x50] Global U201 NRND-US BRN314TRAY50
BRN310KIT Boron 2G/3G (Global) Starter Kit, [x1] Global U201 NRND BRN314KIT
BRN402 Boron LTE CAT-M1 (NorAm), [x1] NORAM R410 NRND BRN404
BRN402KIT Boron LTE CAT-M1 (NorAm) Starter Kit, [x1] NORAM R410 NRND BRN404KIT
BRN402TRAY50 Boron LTE CAT-M1 (NorAm), Tray [x50] NORAM R410 NRND BRN404TRAY50

Qualification and approvals

BORON LTE (Cat M1)

  • Model Number: BRN404, BRM402
  • RoHS
  • CE
  • PTCRB
  • FCC ID: 2AEMI-BRN402
  • IC: 20127-BRN402

BORON 2G/3G

  • Model Number: BRN314, BRN310
  • RoHS
  • CE
  • FCC ID: 2AEMI-BRN310
  • IC: 20127-BRN310

Product Handling

ESD Precautions

The Boron contains highly sensitive electronic circuitry and is an Electrostatic Sensitive Device (ESD). Handling Boron without proper ESD protection may destroy or damage it permanently. Proper ESD handling and packaging procedures must be applied throughout the processing, handling and operation of any application that incorporates Boron. ESD precautions should be implemented on the application board where the Boron is mounted. Failure to observe these precautions can result in severe damage to the Boron!

Connectors

There are four connectors on the Boron that will get damaged with improper usage. The JST connector on the circuit board, where you plug in the LiPo battery, is very durable but the connector on the battery itself is not. When unplugging the battery, take extra precaution to NOT pull the connector using the wires, but instead hold the plug at its base to avoid putting stress on the wires. This can be tricky with bare hands - nose pliers are your friend here.

The micro B USB connector on the Boron is soldered on the PCB with large surface pads as well as couple of through hole anchor points. Despite this reinforcement, it is very easy to rip out the connector if too much stress is put on in the vertical direction.

The U.FL antenna connector is not designed to be constantly plugged and unplugged. The antenna pin is static sensitive and you can destroy the radio with improper handling. A tiny dab of glue (epoxy, rubber cement, liquid tape or hot glue) on the connector can be used securely hold the plug in place.

The 10 pin SWD connector provides an easy in-system debugging access to the device. The pins on the connector can easily be damaged if the mating connector cable is inserted improperly. If you are trying to debug the device, you probably are not in a good mood to begin with. The last thing you want is to render the connector useless. Be nice, and be gentle on the connector. Good luck with the debugging!

Breadboarding

The breadboard provided with the Boron is specifically designed to require low insertion force. This makes it easy to plug the Boron in and out of the breadboard. If you end up using a different breadboard, remember that it may require more force. In this case, always remember to pinch-hold your precious Boron by the sides (along the header pins) when plugging-unplugging and not by the USB connector (don't be this person).

Default settings

The Boron comes preprogrammed with a bootloader and a user application called Tinker. This application works with an iOS and Android app also named Tinker that allows you to very easily toggle digital pins, take analog and digital readings and drive variable PWM outputs.

The bootloader allows you to easily update the user application via several different methods, USB, OTA, Serial Y-Modem, and also internally via the Factory Reset procedure. All of these methods have multiple tools associated with them as well.

FCC IC CE Warnings and End Product Labeling Requirements

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. 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.

FCC Radiation Exposure Statement: This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This transmitter module must not be co-located or operating in conjunction with any other antenna or transmitter. This End equipment should be installed and operated with a minimum distance of 20 centimeters between the radiator and your body.

IMPORTANT NOTE: In the event that these conditions can not 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 can not 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 FCC authorization.

End Product Labeling The final end product must be labeled in a visible area with the following:

  • Contains FCC ID: 2AEMI-BRN402 (BORON LTE)
  • Contains FCC ID: 2AEMI-BRN310 (BORON 2G/3G)

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.


Canada Statement This device complies with Industry Canada’s licence-exempt RSSs. Operation is subject to the following two conditions:

  1. This device may not cause interference; and
  2. This device must accept any interference, including interference that may cause undesired operation of the device.

Le présent appareil est conforme aux CNR d’Industrie Canada applicables aux appareils radio exempts de licence.

L’exploitation est autorisée aux deux conditions suivantes:

  1. l’appareil ne doit pas produire de brouillage;
  2. l’utilisateur de l’appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d’en compromettre le fonctionnement.

Caution Exposure: This device meets the exemption from the routine evaluation limits in section 2.5 of RSS102 and users can obtain Canadian information on RF exposure and compliance. Le dispositif répond à l'exemption des limites d'évaluation de routine dans la section 2.5 de RSS102 et les utilisateurs peuvent obtenir des renseignements canadiens sur l'exposition aux RF et le respect.

The final end product must be labelled in a visible area with the following: The Industry Canada certification label of a module shall be clearly visible at all times when installed in the host device, otherwise the host device must be labelled to display the Industry Canada certification number of the module, preceded by the words “Contains transmitter module”, or the word “Contains”, or similar wording expressing the same meaning, as follows:

  • Contains transmitter module IC: 20127-BRN402 (BORON LTE)
  • Contains transmitter module IC: 20127-BRN310 (BORON 2G/3G)

This End equipment should be installed and operated with a minimum distance of 20 centimeters between the radiator and your body. Cet équipement devrait être installé et actionné avec une distance minimum de 20 centimètres entre le radiateur et votre corps.

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

Revision history

Revision Date Author Comments
v001 2018 Oct 26 MB Initial release
v002 2020 Jan 21 RK Remove mesh
v003 2020 Sep 01 RK Add EN pin information
v004 16-Sep-2020 RK Added power consumption information
v005 15-Mar-2021 RK Updated model, carrier, ordering information
v005 26-Apr-2021 RK Added BRN314 and BRN404 model numbers
v006 28-Jun-2021 RK Added Device OS 3.1 memory map information
v007 09-Jul-2021 RK Number of accessible I2C ports is 1, not 2
v008 28-Jul-2021 RK Corrected number of SPI ports (2) in peripherals and GPIO
v009 10-Sep-2021 RK Changed wording of peak vs. max current

Known Errata

Contact

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