Silicon Labs USB-enabled EFM32™ Happy Gecko 32-bit Microcontrollers are ideal for battery-operated applications and other systems requiring low energy and high performance. The MCUs are based on the powerful ARM® Cortex®-M0+ core. Happy Gecko MCUs have a standby current consumption of 900nA and consume less than 180µA per MHz while executing real-life code from Flash. USB-enabled Happy Gecko 32-bit microcontrollers feature low-energy techniques, short wake-up time from energy-saving modes, and a wide selection of peripherals.
Features
ARM Cortex-M0+ CPU platformHigh performance 32-bit processor @ up to 25MHzWake-up interrupt controllerSysTick system timerFlexible energy management system20nA @ 3V shutoff mode0.6µA @ 3V stop mode, including power-on reset, brown-out detector, RAM and CPU retention0.9µA @ 3V Deep Sleep Mode, including RTC with 32.768kHz oscillator, power-on reset, brown-out detector, RAM and CPU retention51µA/MHz @ 3V sleep mode127µA/MHz @ 3V run mode, with code executed from Flash64kB/32kB Flash8kB/4kB RAMUp to 37 general purpose I/O pinsConfigurable push-pull, open-drain, pull-up/down, input filter, drive strengthConfigurable peripheral I/O locationsUp to 16 asynchronous external interruptsOutput state retention and wake-up from shutoff mode6-channel DMA controller6-channel Peripheral Reflex System (PRS) for autonomous inter-peripheral signalingHardware AES with 128-bit keys in 54 cyclesTimers/counters3× 16-bit timer/counter3×3 compare/capture/PWM channelsDead-time insertion on TIMER024-bit real-time counter16-bit pulse counterWatchdog timer with dedicated RC oscillator @ 50nA
Applications
Energy, gas, water, and smart meteringHealth and fitness applicationsSmart accessories
