EFR32BG21 Blue Gecko Wireless SoCFamily Data SheetThe Blue Gecko family of SoCs is part of the Wireless Gecko port-folio. Blue Gecko SoCs are ideal for enabling energy-friendly Blue-tooth 5 networking for IoT devices.The single-die solution combines an 80 MHz ARM Cortex-M33 with a high performance2.4 GHz radio to provide an industry-leading, energy efficient wireless SoC for IoT con-nected applications.Blue Gecko applications include:KEY FEATURES• 32-bit ARM® Cortex®-M33 core with 80MHz maximum operating frequency• Up to 1024 kB of flash and 96 kB of RAM• 12-channel Peripheral Reflex Systemenabling autonomous interaction of MCUperipherals• Integrated PA with up to 20 dBm (2.4GHz) TX power• Robust peripheral set and up to 20 GPIOin a 4x4 QFN package• Lighting• Connected Home• Gateways and Digital Assistants• Building Automation and SecuritySecuritySecure DebugAuthenticationTimers and Triggers32-bit busPeripheral Reflex SystemSerialInterfacesI/O PortsAnalog I/FLowest power mode with peripheral operational:USARTI2CExternalInterruptsGeneralPurpose I/OPin ResetPin WakeupIADCAnalogComparatorEM4—ShutoffEnergyManagementBrown-OutDetectorVoltageRegulatorPower-On ResetClock ManagementHF CrystalOscillatorLF CrystalOscillatorLFRC OscillatorHFRC OscillatorEM23 HF RCOscillatorCrypto AccelerationSecure ElementUltra LF RCOscillatorCore / MemoryARM CortexTM M33 processorwith DSP extensions,FPU and Trust ZoneETMSecure DebugRAM MemoryLDMAControllerFlash ProgramMemoryReal TimeCapture CounterTimer/CounterLow Energy TimerWatchdog TimerProtocol TimerEM3—StopEM2—Deep SleepEM1—SleepEM0—ActiveTrue RandomNumber GeneratorFast StartupRC OscillatorBack-Up RealTime CounterRadio TransceiverDEMODAGCIFADCMODFrequencySynthPGARF FrontendIQPALNAPAEUISecure Boot withRoot of Trust andSecure LoaderDPACountermeasuressilabs.com | Building a more connected world.Rev. 1.1
