silicon labs

Posted on by Jean-Luc Aufranc (CNXSoft) - 4 Comments on Thread is a New IP-based Wireless Protocol Leveraging 6LoWPAN and 802.15.4 Standards

Thread is a New IP-based Wireless Protocol Leveraging 6LoWPAN and 802.15.4 Standards

Wi-Fi is a neat way to connect devices to Internet, but it has two main inconveniences: relatively high cost and power consumption. Luckily there are standards that addresses the cost and power consumption issues. Radio chips based on IEEE 802.15.4, a standard which specifies the physical layer and media access control for low-rate wireless personal area networks, are common place and found in many existing devices relying on higher level wireless protocols such as ZigBee, ISA100.11a, WirelessHART, and MiWi. AFAIK, Zigbee is the most popular of the aforementioned protocols, but is hindered by the requirements of the license for commercial products (annual fee), Zigbee membership requirements conflict with many open source license such as GPL, and the standard suffers from lack of interoperability and IPv6 support, and power requirements that are too high for some applications. So a consortium of seven companies namely ARM, Big Ass Fans, Freescale, Nest, Samsung, […]

Posted on by Jean-Luc Aufranc (CNXSoft) - No Comments on Silicon Labs Unveils EFM32 Zero Gecko MCU Family Based on ARM Cortex M0+

Silicon Labs Unveils EFM32 Zero Gecko MCU Family Based on ARM Cortex M0+

Silicon Labs, who bought Energy Micro earlier this year, has recently introduced a new family of 32-bit MCU based on ARM Cortex M0+ called EFM32 Zero Gecko, as well as the corresponding starter kit. These ultra low power MCUs (currently 16 products) are destined to be used in  IoT applications such as mobile health and fitness products, smart watches, activity trackers, smart meters, security systems and wireless sensor nodes, as well as battery-less systems powered by harvested energy. The key features of this family include: ARM Cortex-M0+ core @ 24 MHz 4kb to 32 kB flash and 2kb to 4 kB RAM memory 17 to 37 GPIO Single 1.85–3.8 V power supply 5 Power modes Hardware AES (Some models only) -40° to 85 °C operation range Package options: QFN24, QFN32 and QFN48 EFM32ZG222F32, the Zero Gecko MCU with the most memory and features, has the following specifications: ARM Cortex-M0+ CPU […]

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