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New Cellular IoT Discovery Kit for Easy Connection to Mobile Networks

This IoT Solution provides an immediate connection to mobile networks and the internet for remote IoT Devices

STMicroelectronics has released the B-L462E-CELL1 Discovery kit which brings together the critical hardware and software building blocks, including GSMA-certified embedded SIM (eSIM) to quickly develop Cellular IoT devices that connect to the Internet through LTE-Cat M and NB-IoT networks. It is well suited for embedded developers and IoT engineers, and also affordable for OEM and mass-market customers.

Click for Larger Image - New Cellular IoT Discovery Kit for Easy Connection to Mobile Networks The Discovery kit features an ultra-small size all-in-one cellular module from Murata, which embeds ST’s ultra-low-power STM32L462* microcontroller, ST4SIM-200M GSMA-certified embedded SIM (eSIM), and an LTE-M/NB-IOT chipset. The eSIM is pre-programmed with a bootstrap connectivity profile from Truphone. The kit leverages out-of-the-box data connectivity and enables remote SIM provisioning and SIM Over-The-Air updates. The user can immediately start the board by connecting a power supply which activates the eSIM to let the board connect to a cellular network to begin developing the application.

The kit is designed to strongly resist cellular connectivity attacks thanks to the ST4SIM-200M eSIM solution based on the proven ST33 Arm® SecurCore® SC300™ secure element, which is CC EAL5+ and GSMA SGP.02 v3.2 certified. The ST4SIM is ready to host a Root-of-Trust applet for enhanced protection against cyber-attacks.

A set of on-board sensors simplifies development of motion- and environmental-monitoring solutions. They comprise ST’s LSM303AGR accelerometer-magnetometer, HTS221 relative humidity and temperature sensor, and LPS22HH pressure sensor. There is also a 0.96-inch OLED display, indicator LEDs, and a USB connection.

“Cellular connectivity will take a significant share on the IoT market and is why ST has teamed with Murata on a module powered by STM32L4 and embedded ST4SIM eSIM,” said Hakim Jaafar, Head of Wireless MCU Marketing, STMicroelectronics. “For the best out-of-the-box experience, ST has also worked closely with Truphone on a free-of-charge LTE-M connectivity data plan to allow IoT Cellular Discovery kit users to quickly develop and prototype their solutions.”

Features of the B-L462E-CELL1 Cellular IoT Discovery Kit include:

  • LBAD0ZZ1SE module from Murata powered by STM32L462RE with built-in eSIM, LTE Cat M/NBIoT modem, and 1 Mbyte of Quad-SPI Flash memory
  • Ultra-low-power STM32L4 Series STM32L462REY6TR microcontroller based on the Arm® Cortex®-M4 core with 512 Kbytes of Flash memory and 160 Kbytes of RAM
  • 64 Mbytes of onboard Quad-SPI Flash memory from Micron®, exclusive with the 1 MByte of Quad-SPI Flash memory inside the module
  • 16 Kbytes of I²C EEPROM
  • 0.96-inch 128 x 64 OLED screen with SPI interface
  • Low-power Audio CODEC with PCM bus and I²C interface
  • Ultra-low-power 3D accelerometer and 3D magnetometer
  • Capacitive digital sensor for relative humidity and temperature
  • 260-1260 hPa absolute digital output barometer
  • 3 user LEDs
  • 2 push-buttons (user and reset)
  • Board connectors:
    • SMA antenna connector
    • Two 50-pin 2.54 mm pitch headers
    • STMod+
    • micro-SIM card slot
    • 3.5 mm CTIA stereo headset jack including analog microphone input
    • USB Micro-B connectors for power, USARTs, USB device, and ST-LINK/V2-1
    • TAG10
    • mikroBUS expansion connectors
    • ESP‑01 expansion connector
    • Grove Seeed Studio™ breadboard, I²C, and UART expansion connectors
  • Flexible power-supply options: ST-LINK USB, User USB, UART USB, Power USB, or three AAA batteries
  • On-board ST-LINK/V2-1 debugger/programmer with USB re-enumeration capability: mass storage, Virtual COM port, and debug port
  • End-to-end connectivity applications
  • Low‑power cellular network services from Truphone®
  • Support of a wide choice of Integrated Development Environments (IDEs) including IAR Embedded Workbench®, MDK-ARM, and STM32CubeIDE

More information on the B-L462E-CELL1 Cellular IoT Discovery kit is available on the ST Web site at STMicroelectronics B-L462E-CELL1 product page.

STM32 are registered and/or unregistered trademarks of STMicroelectronics International NV or its affiliates in the EU and/or elsewhere. In particular, STM32 is registered in the US Patent and Trademark Office.

The company's Web site address is www.st.com.
[Reprinted with kind permission from STMicroelectronics - Release Date, 8th April, 2021]