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EFR32FG28 Sub-GHz Wireless + 2.4 GHz BLE SoCs

Newly Announced

The EFR32FG28 SoC is an ideal dual band Sub-GHz + 2.4 GHz Bluetooth LE SoC solution for IoT applications in smart homes, security, lighting, building automation, and metering. This dual band solution combines a high-performance Sub-GHz radio that provides long range capabilities and a Bluetooth radio for increased design flexibility. The large memory footprint and increased IO count allows for design consolidation and Secure Vault™ gives flexibility to choose the security level that meets your product’s needs.

Efrfg28 soc bd
Up to 1024 kB of Flash and 256 kB of RAM
Sub-GHz and Bluetooth LE Support
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Tech Talk

Design Long Range Devices for Amazon Sidewalk with FG28

Amazon Sidewalk is a shared network that extends the low-bandwidth working range of devices. Learn how to design long-range devices with Amazon Sidewalk on our new dual-band SoC, the FG28.

EFR32FG28 Common Specs

Low Power Wireless System-on-Chip

  • High Performance 32-bit 78 MHz ARM Cortex®-M33 with DSP instruction and floating-point unit for efficient signal processing
  • Up to 1024 kB flash program memory
  • Up to 256 kB RAM data memory
  • Sub-GHz radio operation with TX power up to +20 dBm
  • 2.4 GHz BLE radio operation with TX power up to +10 dBm
  • Matrix Vector Processor for AI/ML acceleration

Low Energy Consumption

  • 5 mA RX current at 920 MHz (400 kbps 4-FSK)
  • 4.6 mA RX current at 915 MHz (4.8 kbps O-QPSK)
  • 6.1 mA RX current at 915 MHz (2 Mbps GFSK)
  • 4.6 mA RX current at 868 MHz (2.4 kbps GFSK)
  • 4.6 mA RX current at 868 MHz (38.4 kbps FSK)
  • 4.1 mA RX current at 433 MHz (100 kbps 2GFSK)
  • 5.2 mA RX current at 2.4 GHz, 1 Mbps BLE
  • 26.2 mA TX current @ 14 dBm output power at 915 MHz (14 dBm part number)
  • 82.2 mA TX current @ 20 dBm output power at 915 MHz with (20 dBm part number)
  • 12.2 mA TX current @ 0 dBm output power, 2.4 GHz
  • 22.5 mA TX current @ 10 dBm output power, 2.4 GHz
  • 33 μA/MHz in Active Mode (EM0) at 39.0 MHz
  • 2.8 μA EM2 DeepSleep current (256 kB RAM retention and RTC running from LFXO)
  • 1.3 μA EM2 DeepSleep current (16 kB RAM retention and RTC running from LFRCO)
  • Preamble Sense Mode (PSM) low duty-cycle listen

High Receiver Performance

  • -98.6 dBm sensitivity @ 400 kbps 920 MHz 4-GFSK
  • -125.8 dBm sensitivity @ 4.8 kbps 915 MHz O-QPSK
  • -96.9 dBm sensitivity @ 2 Mbps 915 MHz GFSK
  • -125.3 dBm sensitivity @ 2.4 kbps 868 MHz GFSK
  • -111.5 dBm sensitivity @ 38.4 kbps 868 MHz FSK
  • -110.7 dBm sensitivity @ 100 kbps 433 MHz 2GFSK

Wide Selection of MCU peripherals

  • Analog to Digital Converter (ADC)
    • 12-bit @ 1 Msps
    • 16-bit @ 76.9 ksps
  • 2 × Analog Comparator (ACMP)
  • 2-Channel Digital to Analog Converter (VDAC)
  • Low-Energy Sensor Interface (LESENSE)
  • Up to 49 General Purpose I/O pins with output state retention and asynchronous interrupts
  • 8 Channel DMA Controller
  • 12 Channel Peripheral Reflex System (PRS)
  • 4 × 16-bit Timer/Counter with 3 Compare/Capture/PWM channels
  • 1 × 32-bit Timer/Counter with 3 Compare/Capture/PWM channels
  • 32-bit Real Time Counter
  • 24-bit Low Energy Timer for waveform generation
  • 2 × Watchdog Timer
  • 3 × Enhanced Universal Synchronous/Asynchronous Receiver/Transmitter (EUSART)
  • 1 x Universal Synchronous/Asynchronous Receiver/Transmitter (UART/SPI/SmartCard (ISO 7816)/IrDA/I2S)
  • 2 × I2S interface with SMBus support
  • Integrated Low-Energy LCD Controller supporting up to 192 segments
  • Keypad scanner supporting up to 6 x 8 matrix (KEYSCAN)
  • Die temperature sensor with ± 2 °C accuracy across temperature range

Supported Modulation Format

  • 2/4 (G)FSK with fully configurable shaping
  • OQPSK with DSSS
  • (G)MSK
  • OOK

Protocol Support

  • Proprietary
  • CONNECT
  • Amazon Sidewalk
  • WM-BUS
  • Wi-SUN
  • Bluetooth Low Energy

Wide Operating Range

  • 1.71 to 3.8 V single power supply
  • -40 °C to +125 °C

Packages

  • QFN68 8 mm x 8 mm x 0.85 mm
  • QFN48 6 mm x 6 mm x 0.85 mm

Secure Vault

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Fg28 pro kit

FG28-PK6024A - EFR32FG28 Pro Kit

The EFR32FG28 Pro Kit is designed to support the development of Wireless IoT devices based on Sub-GHz and 2.4GHz protocols like Wi-SUN, Amazon Sidewalk, WM-BUS, Silicon Labs CONNECT, Proprietary protocols and Bluetooth Low Energy. The Pro Kit includes a radio board that provides a complete reference design for the EFR32FG28 Wireless SoC, with the matching network for +14 dBm covering the 868 and 915 MHz frequency bands.

Fg28 pro kit

FG28-PK6025A - EFR32FG28 Pro Kit

The EFR32FG28 Pro Kit is designed to support the development of Wireless IoT devices based on Sub-GHz and 2.4GHz protocols like Wi-SUN, Amazon Sidewalk, WM-BUS, Silicon Labs CONNECT, Proprietary protocols and Bluetooth Low Energy. The Pro Kit includes a radio board that provides a complete reference design for the EFR32FG28 Wireless SoC, with the matching network for +20 dBm covering the 868 and 915 MHz frequency bands.

Fg28 rb4400b

FG28-RB4400B +14 dBm Radio Board

The EFR32FG28 +14 dBm Radio Board is designed work with the WSTK main board (not included) to support the development of Wireless IoT devices based on Sub-GHz wireless protocols for protocols like Wi-SUN, Amazon Sidewalk, WM-BUS, Silicon Labs CONNECT, Proprietary protocols and Bluetooth Low Energy. The kit includes a +14 dBm 868 and 915 MHz radio board that provides a complete reference design for the EFR32FG28 Wireless SoC.

Works with announcement 2023 mobile
August 22-23, 2023

Works With 2023 Virtual Conference

Works With brings together the most influential technology brands, manufacturers, ecosystem providers, and developers to connect on the latest technology, tools, and training and accelerate the pace of bringing meaningful connected devices to life.

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