Silicon Labs announces two new Bluetooth LE connectivity System-on-Chips: the BG22L and BG24L. These application-specific devices target distinct segments of the wireless market.
The BG22L operates at 38.4 MHz using an ARM Cortex M33 processor, featuring 352 kB of flash and 24 kB of RAM in a 4mm x 4mm QFN32 package. The device incorporates a Precision Low-Frequency RC Oscillator (PLFRCO), eliminating external oscillator requirements. Testing indicates coin cell battery operation lasting up to 10 years under typical usage conditions.
The BG24L operates at 78 MHz with an ARM Cortex M33 processor, incorporating 768 kB of flash and 96 kB of RAM in a 5mm x 5mm QFN40 package. The device includes Silicon Labs’ Matrix Vector Processor (MVP) AI/ML accelerator, which reduces power consumption to 1/6th compared to standard Cortex M processing for machine learning tasks.
Both devices support Bluetooth Direction Finding, with the BG24L adding compatibility for Bluetooth 6.0’s Channel Sounding feature. This capability enables sub-meter distance measurement between connected devices through two-way signal analysis. Applications include asset tracking in warehouses, access control systems, and item location services.
The BG22L supports Bluetooth 5.4 specifications, while the BG24L extends functionality to include Bluetooth 6.0 features. Silicon Labs plans to release both SoCs for general availability in Q2 2025.
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