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32bit sub-GHz wireless MCUs ease IoT connectivity

25 Feb 2015

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Silicon Labs has rolled out a family of 32bit wireless MCUs aimed to streamline various IoT connectivity applications. According to the company, the EZR32 wireless MCUs offer remarkable power efficiency and sub-GHz RF performance and enable any application requiring longer battery life, increased wireless range, small form factor, and the flexibility to support proprietary and industry-standard wireless protocols with a single-chip device.


Target applications for the EZR32 family include smart metering, wireless sensor networks, home and building automation, security systems, remote monitoring and asset tracking.

Combining an EFM32 MCU core with EZRadio/EZRadioPRO sub-GHz transceivers, EZR32 wireless MCUs give developers significant advantages over conventional system designs that pair discrete MCUs with RF devices. Seamless MCU+RF integration frees developers from the challenge of making complex interconnections between the MCU and the radio, resulting in an easier design process and simpler board designs with less susceptibility to interference. Developers can begin their wireless designs secure in the knowledge that they are getting a fully tested, field-proven, single-chip wireless MCU solution that helps reduce component count and board size for space-constrained applications, stated Silicon Labs.

Bluetooth Smart sol'ns streamline wireless IoT designs
Silicon Labs announced what it describes as a complete Bluetooth Smart solutions portfolio geared to assist developers reduce the energy consumption, cost and complexity of wireless IoT designs. The Blue Gecko wireless SoCs and modules help developers simplify design and speed time to market for the connected home, health and fitness, wearables, automotive, consumer electronics, audio and industrial automation markets.

The wireless MCUs provide RF coverage over a wide frequency band for all geographic regions, 20dBm Tx power output for longer range, and industry-leading receive sensitivity, selectivity and blocking, the company noted. The low standby, transmit and receive power consumption of the EZRadio and EZRadioPRO transceivers, combined with the ultra-low-power operating modes and fast wake-up times of the EFM32 MCUs, results in an ideal solution for battery-powered wireless applications, without any compromises in RF performance. The multi-protocol EZR32 devices support wireless applications based on IEEE 802.15.4/4g, Wireless M-Bus, Wi-SUN and a range of proprietary radio protocols.

The EZR32 includes two pin-compatible product lines: EZR32LG devices based on an ARM Cortex-M3 core and EZR32WG devices based on an ARM Cortex-M4 core with floating point and digital signal processing capabilities. Flash memory options scale from 64KB to 256KB. Both product lines support 32KB of RAM and a rich peripheral set including timers and counters, multiple communication interfaces, ADC and DAC, the low-energy sensor interface (LESENSE), USB, and a 128bit AES accelerator for advanced security and data protection.

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