EFR32SG28B320F1024IM48-AR

Overview

The EFR32SG28B320F1024IM48-AR is a dual-band RF System-on-Chip featuring Sub-GHz and 2.4 GHz radios with ARM Cortex-M33 core operating at 78 MHz. It includes 1024 kB Flash, 256 kB RAM, Secure Vault High security, and an AI/ML accelerator. The device supports up to +20 dBm output power, -108.6 dBm sensitivity, and operates on 1.71V to 3.8V supply voltage within -40°C to 125°C temperature range.

Feature Summary

• Dual-band radio operation supporting both Sub-GHz and 2.4 GHz frequencies for versatile connectivity
• Integrated Secure Vault High security kernel providing robust protection against remote and local attacks
• Hardware-accelerated AI/ML processing capabilities for efficient edge computing tasks

Applications

• Amazon Sidewalk compatible devices
• Smart home and building automation systems
• Security and access control equipment
• Battery-powered IoT sensors and endpoints

Procurement Notes

Verify the specific suffix 'AR' indicates tape-and-reel packaging configuration when sourcing components. Confirm that the Secure Vault High implementation aligns with required security standards for the target application environment. Ensure compatibility with existing design infrastructure before finalizing procurement decisions.

Selection Notes

Select this model for applications requiring simultaneous Sub-GHz long-range and 2.4 GHz BLE connectivity. The high memory capacity supports complex protocol stacks like Wi-SUN and Amazon Sidewalk. Consider the exposed pad package for thermal management requirements in dense PCB layouts.

Part Context

This component belongs to the Silicon Labs EFR32xG28 family of wireless SoCs. It represents a significant upgrade in memory and security features compared to previous generations, targeting resource-intensive IoT applications requiring high reliability and advanced computational capabilities at the network edge.

Replacement Considerations

EFR32SG28B320F1024IM48-A