The EFR32MG24 Wireless SoCs are ideal for mesh IoT wireless connectivity using Matter, OpenThread and Zigbee protocols for smart home, lighting, and building automation products. With key features like high performance 2.4 GHz RF, low current consumption, an AI/ML hardware accelerator and Secure Vault™, IoT device makers can create the smart, robust, and energy-efficient products that are secure from remote and local cyber-attacks. An ARM Cortex®-M33 running up to 78 MHz and up to 1.5 MB of Flash and 256 kB of RAM provides resources for demanding applications while leaving room for future growth. Target applications include gateways and hubs, sensors, switches, door locks, LED lighting, luminaires, location services, predictive maintenance, glass break detection, wake-word detection, and more.
Key features
Low Power Wireless System-on-Chip
- High Performance 32-bit 78.0 MHz ARM Cortex®-M33 with DSP instruction and floating-point unit for efficient signal processing
- Up to 1536 kB flash program memory
- Up to 256 kB RAM data memory
- 2.4 GHz radio operation
Radio Performance
- -105.4 dBm sensitivity @ 250 kbps OQPSK DSSS
- -105.7 dBm sensitivity @ 125 kbps GFSK
- -97.6 dBm sensitivity @ 1 Mbit/s GFSK
- -94.8 dBm sensitivity @ 2 Mbit/s GFSK
- TX power up to 19.5 dBm
Low System Energy Consumption
- 4.4 mA RX current (1 Mbps GFSK)
- 5.1 mA RX current (250 kbps OQPSK DSSS)
- 5 mA TX current @ 0 dBm output power
- 19.1 mA TX current @ 10 dBm output power
- 156.8 mA TX current @ 19.5 dBm output power
- 33.4 μA/MHz in Active Mode (EM0) at 39.0 MHz
- 1.3 μA EM2 DeepSleep current (16 kB RAM retention and RTC running from LFRCO)
Wide Selection of MCU Peripherals
- Analog to Digital Converter (IADC)
- 12-bit @ 1 Msps or 16-bit @ 76.9 ksps
- Select OPNs support High Speed Mode (up to 2 Msps) and High Accuracy Mode (up to 16 bits ENOB at 3.8 ksps)
- 2 × Analog Comparator (ACMP)
- 2 × Digital to Analog Converter (VDAC)
- Up to 32 General Purpose I/O pins with output state retention and asynchronous interrupts
- 8 Channel DMA Controller (LDMA)
- 16 Channel Peripheral Reflex System (PRS)
- 3 × 16-bit Timer/Counter with 3 Compare/Capture/PWM channels (TIMER2/3/4)
- 2 × 32-bit Timer/Counter with 3 Compare/Capture/PWM channels (TIMER0/1)
- 32-bit Real Time Counter (SYSRTC)
- 24-bit Low Energy Timer for waveform generation (LETIMER)
- 16-bit Pulse Counter with asynchronous operation (PCNT)
- 2 × Watchdog Timer (WDOG)
- 1 × Universal Synchronous/Asynchronous Receiver/Transmitter (USART), supporting UART/SPI/SmartCard (ISO 7816)/IrDA/I2S
- 2 × Enhanced Universal Synchronous/Asynchronous Receiver/Transmitter (EUSART) supporting UART/SPI/DALI/IrDA
- 2 × I2C interface with SMBus support
- Low-Frequency RC Oscillator with precision mode to replace 32 kHz sleep crystal (LFRCO)
- Keypad scanner supporting up to 6×8 matrix (KEYSCAN)
- Die temperature sensor with +/- 1.5 °C accuracy after single-point calibration
Protocol Support
- Matter
- OpenThread
- Zigbee
- BLE
- Bluetooth mesh
- Proprietary 2.4 GHz
- Multiprotocol
MG24 Security Features
- Hardware Cryptographic Acceleration for AES128/192/256, ChaCha20-Poly1305, SHA-1, SHA-2/256/384/512, ECDSA+ECDH (P-192, P-256, P-384, P-521), Ed25519 and Curve25519, J-PAKE, PBKDF2
- True Random Number Generator (TRNG)
- ARM® TrustZone®
- Secure Boot (Root of Trust Secure Loader)
- Secure Debug Unlock
- DPA Countermeasures
- Secure Key Management with PUF
- Anti-Tamper
- Secure Attestation
