EFR32FG23L Sub-GHz Wireless SoC

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 
• 128 kB flash program memory 
• 32 kB RAM data memory 
• Sub-GHz radio operation 
• TX power up to +20 dBm

Wide Selection of MCU peripherals

• Analog to Digital Converter (ADC)
  • 12-bit @ 1 Msps
  • 16-bit @ 76.9 ksps
• 2 × Analog Comparator (ACMP)
• 2 × Digital to Analog Converter (VDAC)
• Low-Energy Sensor Interface (LESENSE)
• Up to 23 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
• 16-bit Pulse Counter with asynchronous operation (PCNT)
• 2 × Watchdog Timer
• 3 × Enhanced Universal Synchronous/Asynchronous Receiver/Transmitter (EUSART)
• 1 × Universal Synchronous/Asynchronous Receiver/Transmitter (UART/SPI/SmartCard (ISO 7816)/IrDA/I2S)
• 2 × I2C interface with SMBus support
• Keypad scanner supporting up to 6x8 matrix (KEYSCAN)
• Die temperature sensor with +2/-2 °C accuracy across temperature range

Low Energy Consumption

• 4.2 mA RX current at 920 MHz (400 kbps 4-FSK)
• 3.8 mA RX current at 915 MHz (4.8 kbps O-QPSK)
• 5.1 mA RX current at 915 MHz (2 Mbps GFSK)
• 3.7 mA RX current at 868 MHz (2.4 kbps GFSK)
• 3.7 mA RX current at 868 MHz (38.4 kbps FSK)
• 4.0 mA RX current at 433 MHz (100 kbps 2GFSK)
• 25.0 mA TX current @ 14 dBm output power at 915 MHz (14 dBm part numbers)
• 85.5 mA TX current @ 20 dBm output power at 915 MHz (20 dBm part numbers)
• 26 μA/MHz in Active Mode (EM0) at 39.0 MHz
• 1.5 μA EM2 DeepSleep current (32 kB RAM retention and RTC running from LFXO)
• 1.2 μA EM2 DeepSleep current (16 kB RAM retention and RTC running from LFRCO)
  

Supported Modulation Format

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

Protocol Support

• Proprietary

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 Operating 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

FG23L Security Features

• Secure Vault™ Mid
  • True Random Number Generator
  • Crypto Engine
  • Secure Application Boot
  • Secure Engine
  • Secure Boot with RTSL
  • Secure Debug Lock/Unlock