STMicroelectronics B-L462E-CELL1 Discovery kit

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The STMicroelectronics B-L462E-CELL1 Discovery kit brings together the critical hardware and software building blocks, including GSMA-certified embedded SIM (eSIM), to quickly develop power-conscious cellular IoT devices that connect to the internet through LTE-Cat M and NB-IoT networks. It is suitable for embedded developers and IoT evangelists as well as OEM and mass-market customers.

The kit features an ultrasmall, all-in-one cellular module from Murata, which embeds ST’s ultralow-power STM32L462 microcontroller, an 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, an ST Authorized Partner. 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 to a power supply using a USB cable or inserting three AAA batteries in the connector provided before activating 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 with the ST4SIM-200M based on the ST33 Arm SecurCore SC300 secure element, which is CC EAL5+ and GSMA SGP.02 v3.2 certified. The eSIM is ready to host a Root-of-Trust applet for enhanced protection against cyber attacks. A set of onboard sensors simplifies development of motion- and environmental-monitoring solutions; there is also a 0.96″ OLED display, indicator LEDs and a USB connection.

The STM32Cube software expansion package, X-CUBE-CELLULAR, drives the Discovery kit and supports the Berkeley (BSD) sockets application programming interface (API). BSD’s standardised function-calls for internet communication let users connect their prototypes to the internet without needing to develop an AT-command driver to control the modem.

With ST’s ultralow-power technologies in the STM32L4, which draws about 2 µA in STOP 2 mode, and a cellular chipset drawing less than 1.4 µA in Power Saving Mode (PSM), the discovery kit provides a platform to develop equipment with battery life of up to 10 years for smart city, smart industry, smart agriculture, smart metering and wearable applications. The eSIM should ease connection to networks in more than 160 countries.

For more information: www.st.com/b-l462e-cell1.