Sterling™-EWB IoT Module

Recommended for New Design (RND)

Overview

A match made for IoT.

New: AT command set firmware and sample applications!

The Sterling-EWB wifi module is a simple, secure, reliable way to gather meaningful IoT intelligence. It’s easier than ever to gather sensor data and wirelessly send it to cloud services like Amazon AWS. Available as an ultra-compact SiP and as a PCB module (chip antenna or U.FL connector), it's a comprehensive IoT platform in a cost-effective embedded module package.

  • A Full Hostless Platform - High performance STM32F412 Cortex M4
  • Power Conscious - Light power usage for long life on battery power
  • Multiple form factors - including all-in-one chip antenna module
  • Rugged Design - Supports industrial temperatures from -40°C to +85°C
  • Enterprise Security - WPA/WPA2, AES, TKIP, and more
  • Personal Support - Free antenna scans, design reviews, on-site EMC support and global FAEs / Tier 2 Support

Laird Connectivity is an Infineon Preferred Partner

Laird Connectivity is honored to be approved as an Infineon Preferred Partner. A partnership which leverages Infineon’s AIROC™ Wi-Fi chipsets and ModusToolbox™ solutions combined with Laird Connectivity’s superior software enablement and integration support.

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partner-infineon.png

Now with Easy-to-Use AT Command Set!

The Sterling-EWB now features an intuitive AT command set for development, configuration and deployment of customer applications for their host MCU. AT commands are an easy and familiar way to develop for both the 802.11 and Bluetooth LE wireless interfaces inside the Sterling-EWB. They use simple commands to configure, connect and send data to the cloud using the Sterling-EWB, with minimal wireless experience needed.

The AT command set dramatically reduces development time with a popular Hayes style interface familiar to many developers and can abstract hundreds of lines of C code into a few simple, pre-programmed functions. 

Learn More

Monitor-Graphic-AT-Command-Set.png

Specifications

Wireless Specification
Wi-Fi 4 (802.11 b/g/n)
Bluetooth 5.1
Chipset (MCU)
ST Micro STM32F412 Cortex M4
Chipset (Wireless)
Cypress CYW4343W
Additional Features
ADC, I2C, I2S, GPIO, Timers
BT Class
Class 1
BT Interfaces
HCI Interface using High Speed UART
Certifications
FCC, ISED, EU, UKCA, MIC, AS-NZS, Bluetooth SIG
Compliance
REACH and RoHS Compliant
Development Tools
Infineon's WICED Studio OR AT Command Set
Dimensions
10 mm x 10 mm (SIP)
16 mm x 21 mm (PCB Module)
Logical Interfaces
SPI, QSPI, USART, PCM
Memory
256 KB SRAM, 1 MB Internal Flash, 2 MB SPI Flash
Operating Temperature
-40° C to +85° C
Security
Open, WEP, WPA Personal, WPA2 Personal, WPA2 Enterprise, AES, TKIP
Storage Temperature
-40° C to +125° C
Voltage
3.0 to 3.6 V
Part NumberAntenna OptionsAntenna TypeBulk or SingleChipset (Wireless)DimensionsForm FactorFrequency Range (Max)Frequency Range (Min)Frequency Range 2 (Max)Frequency Range 2 (Min)Logical InterfacesOS/SoftwareProduct TypeSystem ArchitectureTechnologyType
453-00013C
Recommended for New Design (RND)
Buy Now
U.FL Connector External Bulk (Cut Tape) Infineon (Cypress) CYW4343W 16 mm x 21 mm PCB Module 2495 MHz2400 MHzSerial, SPI, QSPI, PCM, ADC, I2C, I2S, GPIO Cypress WICED Embedded Module Hostless 802.11bgn, Bluetooth 5.1, Dual Mode (Classic + BLE) Module
453-00013R
Recommended for New Design (RND)
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U.FL Connector External Bulk (Tape and Reel) Infineon (Cypress) CYW4343W 16 mm x 21 mm PCB Module 2495 MHz2400 MHzSerial, SPI, QSPI, PCM, ADC, I2C, I2S, GPIO Cypress WICED Embedded Module Hostless 802.11bgn, Bluetooth 5.1, Dual Mode (Classic + BLE) Module
453-00014C
Recommended for New Design (RND)
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Integrated Chip Antenna Internal Bulk (Cut Tape) Infineon (Cypress) CYW4343W 16 mm x 21 mm PCB Module 2495 MHz2400 MHzSerial, SPI, QSPI, PCM, ADC, I2C, I2S, GPIO Cypress WICED Embedded Module Hostless 802.11bgn, Bluetooth 5.1, Dual Mode (Classic + BLE) Module
453-00014R
Recommended for New Design (RND)
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Integrated Chip Antenna Internal Bulk (Tape and Reel) Infineon (Cypress) CYW4343W 16 mm x 21 mm PCB Module 2495 MHz2400 MHzSerial, SPI, QSPI, PCM, ADC, I2C, I2S, GPIO Cypress WICED Embedded Module Hostless 802.11bgn, Bluetooth 5.1, Dual Mode (Classic + BLE) Module
453-00012C
Recommended for New Design (RND)
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Trace Pin External Bulk (Cut Tape) Infineon (Cypress) CYW4343W 10 mm x 10 mm SiP Module 2495 MHz2400 MHzSerial, SPI, QSPI, PCM, ADC, I2C, I2S, GPIO Cypress WICED Embedded Module Hostless 802.11bgn, Bluetooth 5.1, Dual Mode (Classic + BLE) Module
453-00012R
Recommended for New Design (RND)
Buy Now
Trace Pin External Bulk (Tape and Reel) Infineon (Cypress) CYW4343W 10 mm x 10 mm SiP Module 2495 MHz2400 MHzSerial, SPI, QSPI, PCM, ADC, I2C, I2S, GPIO Cypress WICED Embedded Module Hostless 802.11bgn, Bluetooth 5.1, Dual Mode (Classic + BLE) Module
455-00030
Recommended for New Design (RND)
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Integrated Chip Antenna Internal Single Infineon (Cypress) CYW4343W PCB Board 2495 MHz2400 MHzSerial, SPI, QSPI, PCM, ADC, I2C, I2S, GPIO Cypress WICED Development Kit Hostless 802.11bgn, Bluetooth 5.1, Dual Mode (Classic + BLE) Development Board
455-00031
Recommended for New Design (RND)
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Included FlexPIFA Antenna External Single Infineon (Cypress) CYW4343W PCB Board 2495 MHz2400 MHz5825 MHz5150 MHzSerial, SPI, QSPI, PCM, ADC, I2C, I2S, GPIO Cypress WICED Development Kit Hostless 802.11bgn, Bluetooth 5.1, Dual Mode (Classic + BLE) Development Board

Documentation

Name Part Type Last Updated
Product Brief - Sterling-EWB + AT Command Set All Product Brief 07/08/2021
Datasheet - Sterling-EWB All Datasheet 07/15/2021
Software DVK Guide - Sterling-EWB All Documentation 03/15/2021
Cypress Developer Community (external link) All Documentation 07/08/2019
Sterling-EWB Demo Repository (external link) All Documentation 07/08/2019
FCC Certifications - Sterling-EWB All Certification 03/15/2021
ISED (Canada) Certifications - Sterling-EWB All Certification 12/09/2020
MIC (Japan) Certifications - Sterling-EWB All Certification 12/09/2020
EU Certifications - Sterling-EWB All Certification 12/01/2022
AS/NZS Certifications - Sterling-EWB All Certification 12/09/2020
Hardware DVK Guide - Sterling-EWB All Documentation 03/15/2021
CAD Files - Sterling-EWB U.FL and Chip Antenna Modules All Technical Drawings 09/26/2019
CAD, Assembly Drawings, BOM and Schematics - Sterling-EWB Development Boards All Technical Drawings 06/18/2020
RoHS 3 Compliance - Wi-Fi Products All Certification 02/16/2022
Regulatory Information - Sterling-EWB All Certification 01/14/2021
AT Command Guide - Sterling EWB All Documentation 03/16/2021
AT Command Set - Python Sample Applications - Sterling-EWB All Software 03/17/2021
AT Command Quick Start Guide - Sterling-EWB All Documentation 03/17/2021
Release Notes - Sterling-EWB (AT Command Set) v1.0.0.8 All Software 05/21/2021
Application Note - Certification Test Tools and Instructions - Sterling-EWB All Application Note 11/08/2022
ISED ICES-003 Issue 7 Declaration of Compliance All Certification 05/18/2021
Firmware (Full) - Sterling-EWB 1.0.0.8 (US) All Software 05/21/2021
Firmware (Upgrade) - Sterling-EWB 1.0.0.8 (US) All Software 05/21/2021
Firmware (Full) - Sterling-EWB 1.0.0.8 (JP) All Software 05/21/2021
Firmware (Upgrade) - Sterling-EWB 1.0.0.8 (JP) All Software 05/21/2021
Firmware (Full) - Sterling-EWB 1.0.0.8 (EU) All Software 05/21/2021
Firmware (Upgrade) - Sterling-EWB 1.0.0.8 (EU) All Software 05/21/2021
Firmware - Sterling-EWB AT Command Set v1.0.0.7 - EU All Software 03/17/2021
Firmware - Sterling-EWB AT Command Set v1.0.0.7 - JP All Software 03/17/2021
Firmware - Sterling-EWB AT Command Set v1.0.0.7 - US All Software 03/17/2021
PCN 10H 2021 - Sterling LWB, LWB5, EWB All Documentation 11/24/2021
Sterling-EWB Tutorials (Github.io) All Documentation 02/03/2022

Certified Antennas

  • 001-0014

    001-0014

    FlexPIFA / FlexPIFA 6E Flexible Adhesive-Backed PIFA Internal Antennas

    001-0014: FlexPIFA antenna, 2.4 GHZ 

    Learn More
  • 001-0015

    001-0015

    FlexNotch 2.4 GHz Antenna
    Learn More
  • 001-0030

    001-0030

    mFlexPIFA Flexible Adhesive-Backed PIFA Internal Antenna
    Learn More
  • MAF94045

    MAF94045

    NanoBlue Series Bluetooth Internal Antenna
    Learn More

FAQ

Sterling-EWB Wi-Fi not working after programming outside of WICED

If programming the Sterling-EWB outside of WICED ensure that the address locations match. WICED will change the addresses. This has been seen specifically with the the filesystem.bin file.

Can the EWB external SPI be programmed seperately?

The external SPI of the Sterling-EWB can be programmed on the DVK using Segger Jflash-SPI.

Use Pinout SPI 20-pin from the Segger site to connect jlink plus to following Sterling-EWB pins.

JLINK Sterling-EWB Sterling-EWB Schematic
pin 1 - VTref J10-1 3v3 MCU
pin 5 - DI J6-9 PA7/MICRO_SPI1_MOSI
pin 7 - nCS J6-5 PA4/MICRO_SPI1_NSS
pin 9 - CLK J6-3 PA5/MICRO_SPI1_SCK
pin 13 - DO J6-7 PA6/MICRO_SPI1_MISO
pin 15 - nRESET J10-15 MICRO_RST_N

 

What are the EWB programmed files?

The Sterling-EWB has internal and external spi with the following file locations:

Internal SPI

  • bootloader
  • DCT (Device Configuration Table)
  • application

External SPI

  • apps.bin (index of files for external flash)
  • filesystem.bin (Wi-Fi firmware)

 

What external SPI is used on the EWB R4?

R4 of the Sterling-EWB is using a Macronix - MX25L1633E and is supported by WICED.

Does the Sterling-EWB have a BT QDID host software stack reference?

Infineon/Cypress supports the QDID host software stack in the WICED platform as shown below. 

WICED Host SDK for BT5.0

D038395 :  https://launchstudio.bluetooth.com/ListingDetails/61365

WICED Host SDK for BT5.2

D050754 : https://launchstudio.bluetooth.com/ListingDetails/120227

Does the Sterling-EWB external JTAG work?

Yes hardware modification is required please contact support for more information.

How do you internally connect the Vref signal for the onboard A/D converter on Sterling-EWB?

On the base SiP module (453-00012) Vref is connected to pin 65 (VDD_3V3) On the chip antenna or U.FL modules (453-00013 or 453-00014) it is connected to pin 37 (VDD_MCU).

Does the Sterling-EWB AT commands support more than 1 connection?

The Sterling-EWB supports TCP, UDP, and SSL connections with concurrent connections by using a connection id.
The connection id is used when sending commands and also appears in the strings coming back to the Sterling-EWB to support concurrent connections.
Please see the Sterling-EWB AT Command Guide for examples.

Does Sterling EWB support CAN Bus?

The STM32 is able to support a CAN interface on MCU pins PC11 (CAN1_RX) and PE3 (CAN1_TX).
These are pins 45 (RX - MICRO_GPIO_28) and pin 69 (TX – MICRO_I2S2_WS) accordingly on the Sterling-EWB module.
WICED has STM32 drivers for the CAN bus, however, the CAN bus has not been tested by Laird Connectivity.

Does the AT Command firmware of the Sterling-EWB provide access to STM32F412 I/Os?

No, the current version of firmware does not provide access to the STM32F412 I/Os.

What Bluetooth functionalities are supported on the AT-Cmd firmware of the Sterling-EWB?

The current version of AT-Cmd firmware supports scan and provisioning over BLE.

What do I need to consider when desinging in the chip-down/SIPT version so I can leverage your modular certifications?

In order to leverage our modular certifications, you must follow the RF design of the module associated with the chip/SIPT. Design files will be provided upon request so you can reproduce our design on your custom board. We highly suggest you to take advantage of our free design review to prevent any issues when going for certification testing.

Please submit a ticket using our support portal when you are ready to begin the process.

How much space is available for user app in EWB after excluding firmware, driver and etc?

A basic WICED app with Wi-Fi and BT will require about 300k bytes of internal flash. The Wi-Fi firmware is about 400k bytes and can live in either internal or SPI flash memory. The internal flash is 1 Mbyte.

If you’re using SPI flash for the Wi-Fi firmware, there is roughly 700k bytes free in the internal flash. If you’re using internal flash for the Wi-Fi firmware, you have roughly 300k bytes available.

Do the LWB Series radios support worldwide mode?

Unfortunately the LWB Series can only be configured for a static region. We do have options with our other radios, please contact support and we can make a recommendation based on your project's needs.

Can I use the USB interface on Sterling-EWB?

We do not support the USB interface on the Sterling-EWB. The VDD_USB power supply pin ,as labeled, only provides bias to pins PA11 and PA12.  That is why it specified as 3.0 – 3.6V in the datasheet.

The USB interface on the DVK (J24) is only to the FTDI USB-UART translator, the communication to the EWB is on UART1 from the FTDI part. 

How much space is available for the user's application in the Sterling-EWB?

A basic WICED app with Wi-Fi and BT will require about 300k bytes of internal flash. The Wi-Fi firmware is about 400k bytes and can live in either internal or SPI flash memory. The internal flash is 1 Mbyte.

If you’re using SPI flash for the Wi-Fi firmware, there is roughly 700k bytes free in the internal flash. If you’re using internal flash for the Wi-Fi firmware, you have roughly 300k bytes available.

There is a penalty at power-up for putting W-iFi firmware in SPI flash. Loading the firmware from SPI flash takes several (approx. 5) seconds. Loading the firmware from internal flash is considerably faster. After power-up, there is no difference.

Can the Sterling-EWB operate as a Soft AP?

Yes, The EWB can operate as a soft AP and/or client.

Which JTAG adatpers has Laird successfully tested on the Sterling-EWB?

The following debuggers were tested to program and debug the Sterling-EWB

 

 

The FTDI chip that is on the EWB dev kit board is nearly identical to what is inside of the Olimex adapter (FT2232).

What are the requirements to be able to leverage "Modular Approval"?

In order to be able to leverage the Modular Approval of a wireless module the following requirements have to be met:

  • The RF circuitry must be shielded
  • The module must have buffered modulation/data inputs. Module must inherently ensure compliance under host fault (watch dog) conditions
  • The module must have a regulated power supply
  • An antenna needs to be attached permanently or a unique antenna connector must be mounted on the module
  • The module must be compliant with the regulations in a stand-alone configuration
  • The module must be labeled with its permanently affixed FCC ID label or use an electronic display
  • A user manual needs to provide comprehensive instructions to explain compliance requirements.
  • The module must comply with RF exposure requirements

How many STA client connections does the Sterling EWB support?

To determine the max number of connections, use the wwd_wifi_get_max_associations() API. On version 6.2 of the WICED SDK, this API returns 32. Note however that actual numbers depends on the use case. Depending on the resources available on the host, it may or may not be able to service all 32 connections.

Does the Sterling EWB support simultaneous AP and STA operation?

Yes it does. This can be easily tested with the apsta  sample app that's included with the WICED SDK. The sample app can be found in the ..\WICED-Studio-Folder\43xxx_Wi-Fi\apps\snip\apsta folder. Note when using this feature, the AP and STA has to be on the same channel.

Does the Sterling EWB support Enterprise Security? If so, what EAP types are supported.

Yes, it does. Per the Cypress' "Enterprise Security  User Guide", which is included with the WICED SDK, EAP-TLS, EAP-TTLS are PEAPv0-MSCHAPv2 are supported.

Does Laird Connectivity have plans to get KCC approval for the Sterling-LWB, Sterling-EWB or the Sterling-LWB5 modules?

Currently, there are no plans to get the KCC certifications for Sterling-LWB, Sterling-EWB or the Sterling-LWB5.

What is Laird Connectivity's product lifecycle EOL and PCN policy?

Laird Connectivity is committed to the long-term supply of all its standard embedded wireless modules and packaged products. Laird Connectivity’s products are specifically designed to meet the needs of the industrial and medical markets, which typically require 7 – 10 years product lifecycle. Although Laird Connectivity can’t guarantee that a component used in our products will not be obsoleted and cannot be reasonably substituted, Laird Connectivity can assure customers we will continue to sell our product when we have customer demand and can obtain the necessary components to build our products.

View our full policy here. 

Become a Laird Connectivity Customer and Gain Exclusive Access to Our Design Services Team

  • Antenna Scans
  • Antenna selection and placement
  • Custom antenna design
  • Worldwide EMC testing / certifications
  • Embedded RF hardware / firmware design
  • Cloud architecture and integration
  • Mobile application development
  • Product & Industrial Design

Talk to an Expert

Buy Now

Distributor Part In Stock Region Buy
Digi-Key 453-00012C 1585 North America Buy Now
Symmetry Electronics 453-00012C 250 North America Buy Now
Mouser 453-00012C 124 North America Buy Now
Future Electronics 453-00012C 100 North America Buy Now
Sourcengine 453-00012C 100 North America Buy Now
Classic Components 453-00012C 77 North America Buy Now
Farnell 453-00012C 18 EMEA Buy Now
Farnell 453-00012C 18 EMEA Buy Now
Newark 453-00012C 18 North America Buy Now
element14 APAC 453-00012C 18 APAC Buy Now
Avnet 453-00012C 0 North America Buy Now
Future Electronics 453-00012R 6000 North America Buy Now
Sourcengine 453-00012R 6000 North America Buy Now
Classic Components 453-00012R 4620 North America Buy Now
RS 453-00012R 50 EMEA Buy Now
RS 453-00012R 50 EMEA Buy Now
RS 453-00012R 50 EMEA Buy Now
Avnet 453-00012R 0 North America Buy Now
Symmetry Electronics 453-00012R 0 North America Buy Now
Digi-Key 453-00013C 421 North America Buy Now
Mouser 453-00013C 141 North America Buy Now
Symmetry Electronics 453-00013C 100 North America Buy Now
Farnell 453-00013C 3 EMEA Buy Now
Farnell 453-00013C 3 EMEA Buy Now
Newark 453-00013C 3 North America Buy Now
element14 APAC 453-00013C 3 APAC Buy Now
Avnet 453-00013C 0 North America Buy Now
Tomark Electronics Ltd UK 453-00013R 1000 EMEA Buy Now
RS 453-00013R 25 EMEA Buy Now
RS 453-00013R 25 EMEA Buy Now
RS 453-00013R 25 EMEA Buy Now
Avnet 453-00013R 0 North America Buy Now
Future Electronics 453-00013R 0 North America Buy Now
Symmetry Electronics 453-00013R 0 North America Buy Now
Digi-Key 453-00014C 3037 North America Buy Now
Mouser 453-00014C 213 North America Buy Now
Avnet 453-00014C 200 North America Buy Now
Farnell 453-00014C 0 EMEA Buy Now
Farnell 453-00014C 0 EMEA Buy Now
Future Electronics 453-00014C 0 North America Buy Now
Newark 453-00014C 0 North America Buy Now
Symmetry Electronics 453-00014C 0 North America Buy Now
element14 APAC 453-00014C 0 APAC Buy Now
Classic Components 453-00014R 19 North America Buy Now
Avnet 453-00014R 0 North America Buy Now
Future Electronics 453-00014R 0 North America Buy Now
RS 453-00014R 0 EMEA Buy Now
RS 453-00014R 0 EMEA Buy Now
RS 453-00014R 0 EMEA Buy Now
Symmetry Electronics 453-00014R 0 North America Buy Now
Digi-Key 455-00030 21 North America Buy Now
Farnell 455-00030 13 EMEA Buy Now
Newark 455-00030 13 North America Buy Now
element14 APAC 455-00030 13 APAC Buy Now
Mouser 455-00030 6 North America Buy Now
Symmetry Electronics 455-00030 5 North America Buy Now
Avnet 455-00030 4 North America Buy Now
RS 455-00030 3 EMEA Buy Now
Classic Components 455-00030 1 North America Buy Now
Future Electronics 455-00030 1 North America Buy Now
Sourcengine 455-00030 1 North America Buy Now
Symmetry Electronics 455-00031 5 North America Buy Now
Chip One Stop 455-00031 4 APAC Buy Now
Sourcengine 455-00031 4 North America Buy Now
Farnell 455-00031 3 EMEA Buy Now
Newark 455-00031 3 North America Buy Now
RS 455-00031 3 EMEA Buy Now
element14 APAC 455-00031 3 APAC Buy Now
Digi-Key 455-00031 2 North America Buy Now
Classic Components 455-00031 1 North America Buy Now
Avnet 455-00031 0 North America Buy Now
Future Electronics 455-00031 0 North America Buy Now
Mouser 455-00031 0 North America Buy Now

Distributors

Distributor Phone Number Region Website
Alpha Micro UK Only +44 1256-851770
EMEA Website
Arrow Electronics 1-855-326-4757
+44 2039 365486
APAC, North America, South America, EMEA Website
Avnet 1-480-643-2000
+44 1628 512900
APAC, North America, South America, EMEA Website
Cal-Chip Connect 1-215-942-8900
North America Website
Control Synergy +61-2-4966-5211
APAC Website
Digi-Key 1-800-344-4539
North America, South America, APAC, EMEA Website
EBV Elektronik EMEA Website
Farlink Technology +86 13266922199
APAC Website
Farnell 1-800-936-198
+44 3447 11 11 22
EMEA Website
Future Electronics 1-800-675-1619
1-514-428-8470
North America, South America, APAC, EMEA Website
Glyn +49-6126-590-0
EMEA Website
Jetronic China, Hong Kong and Taiwan 852-27636806 
APAC Website
Laird Connectivity 1-847-839-6925
+44 1628 858941
North America, South America, APAC, EMEA Website
M2M Germany +49-6081-587386-0
EMEA Website
Martinsson +46 8 7440300
EMEA Website
McCoy South East Asia +65 6515 2988
APAC Website
Mouser 1-800-346-6873
+44 1494 427500
North America, South America, APAC, EMEA Website
RS Components +852-2421-9898
+44 3457-201201
North America, South America, APAC, EMEA Website
Ryoyo Japan +81-3-3543-7711
APAC Website
Symmetry Electronics 1-866-506-8829
North America Website
Tekdis Australia and New Zealand +61 3 8669 1210
APAC Website
Telsys +972 3 7657666
EMEA Website