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Product Detailed Parameters
- Description：IC RF TXRX+MCU BLE 68QFN
- Series：-
- Mfr：Silicon Labs
- Package：Tape & Reel (TR)
- Type：TxRx + MCU
- RF Family/Standard：Bluetooth, General ISM < 1GHz
- Protocol：Bluetooth v5.1
- Modulation：2-FSK, 4-FSK, 2-GFSK, 4-GFSK, DSSS
- Frequency：902MHz ~ 928MHz, 2.4GHz ~ 2.4835GHz
- Data Rate (Max)：2Mbps
- Power - Output：20dBm
- Sensitivity：-108.6dBm
- Memory Size：1MB Flash, 256kB RAM
- Serial Interfaces：GPIO, I2C, I2S, IrDA, JTAG, PWM, SPI, UART, USART
- Voltage - Supply：1.71V ~ 3.8V
- Current - Receiving：4.2mA ~ 10.2mA
- Current - Transmitting：12.3mA ~ 98mA
- Operating Temperature：-40°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Package / Case：68-VFQFN Exposed Pad
- Supplier Device Package：68-QFN (8x8)
- GPIO：49
- Grade：-
- Qualification：-
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Overview
The Silicon Labs EFR32SG28B320F1024IM68-AR is a Sub-GHz RF System-on-Chip featuring an ARM Cortex-M33 core operating at 78 MHz. It integrates 1024 kB Flash and 256 kB RAM within a QFN-68 package. The device supports +20 dBm output power and includes Secure Vault High security features. It operates on a single supply voltage ranging from 1.71 V to 3.8 V, with a specified operating temperature range of -40°C to +125°C.
Feature Summary
- Dual-band radio operation supporting Bluetooth Low Energy and Sub-GHz FSK protocols for extended coverage in Amazon Sidewalk applications.
- Integrated Secure Vault High dedicated security kernel providing protection against remote and local attacks for IoT devices.
- Multi-core architecture combining an efficient ARM Cortex-M33 processor with low-power peripherals for battery-powered sensor nodes.
Applications
- Amazon Sidewalk compatible smart home devices
- Battery-operated door and window sensors
- Temperature and environmental monitoring sensors
- Independent building connectivity solutions
Procurement Notes
Verify the specific suffix AR indicates reel packaging when sourcing components. Confirm that the Secure Vault High implementation aligns with required security standards for the target application. Ensure the QFN-68 footprint matches the PCB design constraints. Validate RoHS compliance status through official manufacturer documentation prior to integration.
Selection Notes
Select this model for applications requiring both Sub-GHz long-range communication and BLE short-range connectivity. The high flash capacity supports complex firmware updates and data logging. Consider the thermal performance within the industrial temperature range if deployed in harsh environments. Evaluate the GPIO count against interface requirements for peripheral integration.
Part Context
This component belongs to the EFR32xG28 family of wireless SoCs designed for secure, low-power IoT deployments. It represents a significant upgrade in memory and processing capabilities compared to previous generations, enabling more sophisticated edge computing tasks while maintaining compatibility with established development ecosystems.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. Verify cross-compatibility with other SG28 variants based on pinout and memory configuration before substitution.
