EFR32FG22 Series 2 Proprietary Wireless 2.4 GHz SoC

EFR32FG22 (FG22) proprietary wireless 2.4 GHz SoC solutions are part of the Wireless Gecko Series 2 platform. FG22 SoCs integrate a 38.4 MHz Arm® Cortex®-M33 core with TrustZone and a high-performance radio with a receive sensitivity of -102.3 dBm. The SoC's combination of ultra-low transmit and receive power (8.2 mA TX at +6 dBm, 3.6 mA RX), 1.2 µA deep-sleep mode power and innovative low-power features such as RFSense delivers industry-leading energy efficiency to extend the operational life of products with limited battery or energy harvesting options such as those used by electronic shelf labels and industrial wireless sensor nodes.

Ideal for electronic shelf labels and industrial automation
Enables ultra-low-power battery-powered IoT devices

EFR32FG22 Common Specs

Low Power Wireless System-on-Chip

  • High Performance 32-bit 38.4 MHz ARM Cortex®-M33 with DSP instruction and floating-point unit for efficient signal processing
  • Up to 512 kB flash program memory
  • Up to 32 kB RAM data memory
  • 2.4 GHz radio operation

Radio Performance

  • -102.3 dBm sensitivity @ 250 kbps O-QPSK DSSS
  • -98.9 dBm sensitivity @ 1 Mbit/s GFSK
  • -96.2 dBm sensitivity @ 2 Mbit/s GFSK
  • TX power up to 6 dBm
  • 2.5 mA radio receive current
  • 3.4 mA radio transmit current @ 0 dBm output power
  • 7.5 mA radio transmit current @ 6 dBm output power

Low System Energy Consumption

  • 3.6 mA RX current (1 Mbps GFSK)
  • 3.9 mA RX current (250 kbps O-QPSK DSSS)
  • 4.1 mA TX current @ 0 dBm output power
  • 8.2 mA TX current @ 6 dBm output power
  • 26 μA/MHz in Active Mode (EM0) at 38.4 MHz
  • 1.20 μA EM2 DeepSleep current (8 kB RAM retention and RTC running from LFRCO)
  • 0.17 μA EM4 current

Wide Selection of MCU Peripherals

  • 16-bit Analog to Digital Converter (ADC)
  • Up to 26 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
  • 1 × Watchdog Timer
  • 2 × Universal Synchronous/Asynchronous Receiver/Transmitter (UART/SPI/SmartCard (ISO 7816)/IrDA/I2S)
  • 1 × Enhanced Universal Asynchronous Receiver/Transmitter (EUART)
  • 2 × I2C interface with SMBus support
  • Digital microphone interface (PDM)
  • RFSENSE with selective OOK mode
  • Die temperature sensor with +/-1.5 °C
    accuracy after single-point calibration

Supported Modulation Format

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

Protocol Support

  • Proprietary

Wide Operation Range

  • 1.71 V to 3.8 V single power supply
  • -40 °C to 85 °C

Packages

  • QFN40 5 mm × 5 mm × 0.85 mm
  • QFN32 4 mm × 4 mm × 0.85 mm

Securing Your Proprietary Product

IoT security is key to protecting company brands, end user privacy and commercial viability of products. Vulnerabilities can be exploited through both remote Internet attacks and physical hands-on-attacks.

Developers using the Silicon Labs wireless product portfolio including those in the EFR32FG22 portfolio have access to a number of technologies designed to protect their product, including Secure Debug, Secure Boot with Root of Trust & Secure Loader.

FG22 Security Features

  • Secure Boot with Root of Trust and Secure Loader (RTSL)
  • Hardware Cryptographic Acceleration for AES128/256, SHA-1, SHA-2 (up to 256-bit), ECC (up to 256-bit), ECDSA,and ECDH
  • True Random Number Generator (TRNG) compliant with NIST SP800-90 and AIS-31
  • ARM® TrustZone®
  • Secure Debug with lock/unlock
Find the Right EFR32FG22 Device Select Columns
Select Columns
Part Number Integrated MCU MCU Core Core Frequency (MHz) Flash RAM Communications Output Power (dBm) RX Current (mA) Receive Sensitivity (dBm) TX Current A TX Current A (dBm) TX Current B TX Current B (dBm) Proprietary 2.4 GHz Proprietary Sub-GHz Multiprotocol Cryptography Dig I/O Pins ADC-1 DAC Cap Sense Temp Sensor Timers (16-bit) RTC Comparators Temperature Range ºC Package Type Package Size (mm) Debug Interface
ARM Cortex-M33 38.4 512 32 2 x I²C 4 x I²S 2 x SPI 3 x UART 2 x USART -28 6 3.6 -102.1 (250 kbit/s OQPSK) 4.1 0 8.2 6 AES-128 AES-256 ECC SHA-1 SHA-2 18 12-bit, SAR, 1 Msps 4 -40 85 QFN32 4x4 JTAG, SW, ETM
ARM Cortex-M33 38.4 512 32 2 x I²C 2 x I²S 2 x SPI 3 x UART 2 x USART -28 6 3.6 -102.1 (250 kbit/s OQPSK) 4.1 0 8.2 6 AES-128 AES-256 ECC SHA-1 SHA-2 26 12-bit, SAR, 1 Msps 4 -40 85 QFN40 5x5 JTAG, SW, ETM

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Video

Simplify Ultra-Low Power App Development with FG22

Drive digital transformation in retail, commercial and industrial IoT markets with our new FG22 SoCs. Find out more from our VP & GM of Industrial & Commercial IoT Products.



Case Study

Electronic Shelf Label Technology Improves Efficiency

Read more about how Rainus developed a wireless electronic shelf label capable of managing store-wide price automation and reducing operating costs using the EFR32FG22 Series 2 Wireless 2.4 GHz SoC.

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