Starter kits support wireless microcontrollers

26th April 2015
Mick Elliott

The SLWSTK62xx EZR32 wireless starter kit from Silicon Labs is on sale at Mouser Electronics. It provides a complete development platform for Slicon Labs EZR32LG and EZR323WG wireless microcontrollers (MCUs). This starter kit contains sensors and peripherals used for demonstrating many of the EZR32 wireless MCU's wireless and low power capabilities.

The kits provide all the necessary tools for developing a wireless application using the Silicon Labs EZR32 wireless MCU family. Each kit has two WSTK evaluation boards that feature an EZR32LG or EZR32WG wireless MCU based on an ARM Cortex‑M3 or Cortex‑M4 core. Each MCU has 256 KBytes of Flash, 32 KBytes of RAM, and a rich set of peripherals.

These wireless MCUs also have an on-chip 802.15.4g transceiver supporting the 142 MHz to 1050 MHz frequency range with up to +20 dBm output power.

An AES accelerator supports AES encryption and decryption with 128‑bit or 256‑bit keys. EZR32 wireless MCUs support ultra-low power sleep modes and low transmit and receive currents that target low power battery-powered applications.      

The EZR32 wireless starter kits include a mainboard and a radio board. The radio boards have a Micro‑B USB connector for system connectivity and an SMA connector for use with an external antenna.

The board also has a 33mF backup capacitor to power to the EZR32 MCU while in 400 nA backup mode for eight hours or more, maintaining backup register contents and also powering the backup real-time counter.

The mainboard includes an industry-standard J-Link debugger with all features available over Ethernet or USB. The mainboard also includes an ultra‑low power 128x128 LCD display, two pushbuttons, two LEDs for user interactivity and a Silicon Labs Si7021 Relative Humidity and Temperature Sensor.

Silicon Labs’ Advanced Energy Monitor (AEM) software provides real-time graphing and analysis of the EZR32’s energy use. The kit can be powered by the on-board regulator with Silicon Labs’ AEM, through the USB connector on the radio board, a CR2032 coin cell battery, or an external power source.

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