EFR32

Low Power Wireless System-on-Chip

• 2.4 GHz radio operation
• TX power up to 19.5 dBm
• -94 dBm sensitivity @ 1 Mbit/s GFSK
• -101 dBm sensitivity @ 250 kbps O-QPSK DSSS
• 2-FSK/4-FSK with fully configurable shaping
• Shaped OQPSK/(G)MSK

Low Energy Consumption

• 1.85 V to 3.8 V single power supply
• 8.7 mA RX current at 2.4 GHz (1 Mbps GFSK)
• 9.8 mA RX current at 2.4 GHz (250 kbps O-QPSK DSSS)
• 8.8 mA TX current @ 0 dBm output power at 2.4 GHz
• 63 μA/MHz in Active Mode (EM0)
• 1.4 μA EM2 Deep Sleep current (full RAM retention and RTCC running from LFXO)
• μA EM3 Stop current (State/RAM retention)
• Wake on Radio with signal strength detection, preamble pattern detection, frame detection and timeout

Rich Analog and Digital Peripherals

• 12-bit 1 Msps SAR Analog to Digital Converter
• 2× Analog Comparator (ACMP)
• Digital to Analog Current Converter (IDAC)
• Up to 31 pins connected to analog channels (APORT)
• Up to 31 General Purpose I/O pins with output state retention and asynchronous interrupts
• 8 Channel DMA Controller
• 12 Channel Peripheral Reflex System (PRS)
• 2×16-bit Timer/Counter
• 3 + 4 Compare/Capture/PWM channels
• 32-bit Real Time Counter and Calendar
• 16-bit Low Energy Timer for waveform generation
• 32-bit Ultra Low Energy Timer/Counter for periodic wake-up from any Energy Mode
• 16-bit Pulse Counter with asynchronous operation
• Watchdog Timer with dedicated RC oscillator @ 50nA
• 2×Universal Synchronous/Asynchronous Receiver/Transmitter
• Low Energy UART (LEUART™)
• I2C interface with SMBus support and address recognition in EM3 Stop

Powerful MCU & Memory Options

• High Performance 32-bit 40 MHz ARM Cortex®-M4 with DSP instruction and floating-point unit for efficient signal processing
• 256 kB flash program memory
• 32 kB RAM data memory

Package Options

• QFN32 5x5 mm Package
• QFN48 7x7 mm Package