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Silicon Labs

Silicon Labs news tracks updates from the IoT-focused semiconductor company known for energy-efficient MCUs, wireless SoCs, and sensor platforms. Key innovations include Matter-compliant smart home chips, secure wireless modules, and low-power connectivity solutions for industrial and consumer applications. Silicon Labs plays a central role in advancing Zigbee, Bluetooth, and Wi-Fi integration. For Electronics Weekly readers, news from Silicon Labs offers critical insights into embedded design, wireless communication, and the growing ecosystem of smart, connected devices.

Flurry of IoT wireless MCUs from Silicon Labs

SiLabs SiBG301 Bluetooth LE wireless MCU

Silicon Labs has moved to 22nm for its latest series of wireless MCUs for IoT nodes. Announced today, there are parts for Zigbee, Bluetooth and Matter-over-Thread, and for mains or battery power. SixG301 is the mains-powered (line-powered) family, where ‘x’ becomes ‘B’ for the Bluetooth LE (and Bluetooth mesh) focussed variant, or ‘M’ for multi-protocol types. Concurrent multi-protocol operation will ...

Bluetooth MCUs for asset tracking, and sub-metre item finding

SiLabs EFR32BG22L Bluetooth MCU block

Silicon Labs has announced a pair of Bluetooth-enabled microcontroller families, to be available in Q2 this year: BG22L (diagram right) devices are aimed at asset tracking tags and personal healthcare devices, and support Bluetooth 5.4 and Bluetooth Direction Finding. Processing power comes from a 38.4MHz Arm Cortex-M33 processor with up to 352kbyte of flash and up to 24kbyte of ram ...

Silicon Labs crafts wireless MCUs for harvested power

Silicon Labs EFR32MG22 mcus for harvesting

Silicon Labs is aiming at battery-free harvested energy applications with xG22E, a family of wireless microcontrollers covering Bluetooth Low Energy, 802.15.4 or proprietary 2.4 GHz links. “As Silicon Labs’ most energy-efficient SoCs to date, all three will enable IoT device makers to build wireless devices for battery-optimised and battery-free devices that can harvest energy from external sources in their environments ...

50MHz 8051 MCUs

SiliconLabs superset BB5 8bit MCU detail block

Silicon Labs has built a family of 8bit microcontrollers around its 8051-based CIP-51 core, running at 50MHz. “The BB5 family supports voltage options from 1.8 to 5.5V, allowing them to last for years in the field on a coin-cell battery,” according to the company. “They also come in a variety of packing sizes, from 2 x 2mm for BB50, while ...

Wireless MCUs for ‘the smallest IoT devices’

Silicon labs xG27 radio board

Silicon Labs has announced wireless microcontrollers built around Arm’s security-enabled Cortex M33 processor. “Designed for the smallest IoT devices, the xG27 family ranges in size from 2mm-squared to 5 mm-squared. These offer designers energy efficiency, performance, trusted security and  wireless connectivity,” according to the company. Such as “connected medical devices, wearables, asset monitoring tags and simple consumer electronics like toothbrushes ...

IC’s offer Wi-Sun metropolitan coverage and battery-powered Wi-Fi 6

Silicon Labs SiWx917 Wi-Fi 6 Bluetooth

In a flurry of announcements alongside its developer converence, Silicon Labs has revealed a chip set for metropolitan Wi-Sun radio, a low-power IC for battery-powered Wi-Fi 6 links and a hardware-software development kit for Amazon Sidewalk. Wi-Sun For Wi-Sun (which is wireless smart utility network), and proprietary sub-GHz protocols, in cities and other built-up environments, it announced an RF microcontroller ...

AI accelerator in 2.4GHz wireless MCU for Matter and Bluetooth

SiLabs ProKit MG24 BG2

Silicon Labs has introduced a wireless microcontroller with a hardware AI accelerator that can work with Matter, Zigbee, OpenThread, Bluetooth Low Energy and Bluetooth mesh. It comes along with a software tool kit for machine learning. Called EFR32MG24, “this new hardware and software platform will help bring AI and ML applications and wireless to battery-powered edge devices,” according to the company. ...

Low-jitter crystal oscillators and VCXOs are small for optical modules

Silicon-labs-Si54x-crysal-osc-block-650

Silicon Labs has introduced a family of small crystal oscillators (2.5 x 3.2mm option) and voltage-controlled crystal oscillators (VCXOs) for applications that require low jitter and frequency-flexible clock synthesis. Si54x/6x ‘Ultra’ oscillators can have jitter as low as 80fs “providing jitter margin for applications including data centre interconnect, optical transport, broadcast video, test and measurement”, according to the company. Si54x ...