Silicon Labs FG28 Sub

Silicon Labs dual-band FG28 Cortex-M33 SoC comes with sub-Gigahertz and 2.4 GHz Bluetooth LE radios that support long-range networks and protocols like Amazon Sidewalk, Wi-SUN, and other proprietary protocols, as well as a built-in AI/ML accelerator for machine learning inference and SiLabs Secure Vault technology.

The chip looks to be an update to the sub-GHz FG25 Cortex-M33 microcontroller with an additional 2.4 GHz BLE radio, but somehow less program memory (up to 256KB) and storage (up to 1024 KB). The peripherals implemented in the chip are almost the same, as the microcontroller gains support for predictive maintenance with a small matrix vector processor for AI/ML acceleration.

Silicon Labs FG28 (EFR32FG28) specifications:

Silicon Labs will provide the EFR32FG28 Pro Kit for sub-GHz and 2.4 GHz IoT device development with either +14 dBm or +20 dBm Tx output power for the 868-915 MHz bands. We don't have information about the availability of the evaluation kit, but the company says the FG28 is currently sampling and general availability is planned before the end of Q3 2023. Silicon Labs also plans to launch FG28 derivatives specifically optimized for Amazon Sidewalk and Z-Wave Long-Range. More details may be found on the product page and press release.

Jean-Luc started CNX Software in 2010 as a part-time endeavor, before quitting his job as a software engineering manager, and starting to write daily news, and reviews full time later in 2011.

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